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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 28 Jul '23

28 Jul '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 29 Jul, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 927608 Prefixes after maximum aggregation (per Origin AS): 351673 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 452476 Total ASes present in the Internet Routing Table: 74625 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64078 Origin ASes announcing only one prefix: 26312 Transit ASes present in the Internet Routing Table: 10547 Transit-only ASes present in the Internet Routing Table: 456 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 68 Max AS path prepend of ASN (263725) 64 Prefixes from unregistered ASNs in the Routing Table: 1101 Number of instances of unregistered ASNs: 1103 Number of 32-bit ASNs allocated by the RIRs: 42345 Number of 32-bit ASNs visible in the Routing Table: 34877 Prefixes from 32-bit ASNs in the Routing Table: 174104 Number of bogon 32-bit ASNs visible in the Routing Table: 33 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 607 Number of addresses announced to Internet: 3053785344 Equivalent to 182 /8s, 5 /16s and 17 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 309027 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 246183 Total APNIC prefixes after maximum aggregation: 70163 APNIC Deaggregation factor: 3.51 Prefixes being announced from the APNIC address blocks: 239982 Unique aggregates announced from the APNIC address blocks: 98829 APNIC Region origin ASes present in the Internet Routing Table: 13551 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4014 APNIC Region transit ASes present in the Internet Routing Table: 1790 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 28 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8869 Number of APNIC addresses announced to Internet: 773427072 Equivalent to 46 /8s, 25 /16s and 143 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271963 Total ARIN prefixes after maximum aggregation: 123672 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 274070 Unique aggregates announced from the ARIN address blocks: 130874 ARIN Region origin ASes present in the Internet Routing Table: 19093 ARIN Prefixes per ASN: 14.35 ARIN Region origin ASes announcing only one prefix: 6958 ARIN Region transit ASes present in the Internet Routing Table: 1954 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4817 Number of ARIN addresses announced to Internet: 1277267200 Equivalent to 76 /8s, 33 /16s and 141 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260230 Total RIPE prefixes after maximum aggregation: 122637 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256976 Unique aggregates announced from the RIPE address blocks: 159847 RIPE Region origin ASes present in the Internet Routing Table: 28354 RIPE Prefixes per ASN: 9.06 RIPE Region origin ASes announcing only one prefix: 12041 RIPE Region transit ASes present in the Internet Routing Table: 3942 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11264 Number of RIPE addresses announced to Internet: 716774016 Equivalent to 42 /8s, 185 /16s and 26 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118452 Total LACNIC prefixes after maximum aggregation: 28544 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 117598 Unique aggregates announced from the LACNIC address blocks: 49709 LACNIC Region origin ASes present in the Internet Routing Table: 11000 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2322 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8812 Number of LACNIC addresses announced to Internet: 178572288 Equivalent to 10 /8s, 164 /16s and 204 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29679 Total AfriNIC prefixes after maximum aggregation: 5920 AfriNIC Deaggregation factor: 5.01 Prefixes being announced from the AfriNIC address blocks: 38375 Unique aggregates announced from the AfriNIC address blocks: 12721 AfriNIC Region origin ASes present in the Internet Routing Table: 1768 AfriNIC Prefixes per ASN: 21.71 AfriNIC Region origin ASes announcing only one prefix: 617 AfriNIC Region transit ASes present in the Internet Routing Table: 333 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 40 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1115 Number of AfriNIC addresses announced to Internet: 107383808 Equivalent to 6 /8s, 102 /16s and 140 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9526 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5682 784 689 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4853 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4250 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3588 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3370 1856 95 VNPT-AS-VN VNPT Corp, VN 7552 3362 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3050 498 247 BBIL-AP BHARTI Airtel Ltd., IN 4766 2549 11270 588 KIXS-AS-KR Korea Telecom, KR 24560 2457 833 454 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8806 10937 3168 AMAZON-02, US 11492 4525 300 620 CABLEONE, US 7155 4194 288 101 VIASAT-SP-BACKBONE, US 22773 3541 3053 268 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3525 1319 66 SHAW, CA 16625 3144 1557 2354 AKAMAI-AS, US 749 3139 54962 2391 DNIC-AS-00749, US 367 2968 3840 1404 DNIC-ASBLK-00306-00371, US 396982 2678 3595 384 GOOGLE-CLOUD-PLATFORM, US 30036 2514 361 351 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7310 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4074 3398 158 AKAMAI-ASN1, NL 8551 3454 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2973 2294 914 ROSTELECOM-AS, RU 9009 2670 247 1394 M247, RO 34984 2317 362 605 TELLCOM-AS, TR 58224 1816 944 535 TCI, IR 6849 1765 307 17 UKRTELNET, UA 13188 1606 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11617 3387 596 UNINET, MX 10620 3533 507 832 Telmex Colombia S.A., CO 13999 2419 362 635 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad 28573 1317 2322 238 Claro NXT Telecomunicacoes Ltda, BR 3816 1301 767 167 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1299 344 510 Axtel, S.A.B. de C.V., MX 6147 1123 370 22 Telefonica del Peru S.A.A., PE 11664 1112 181 436 Techtel LMDS Comunicaciones Interactiva 26615 1036 2500 48 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1587 393 19 LINKdotNET-AS, EG 24835 1517 533 27 RAYA-AS, EG 36992 1355 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1049 67 45 ORANGE-COTE-IVOIRE, CI 36935 922 521 43 Vodafone-, EG 6713 550 1861 34 IAM-AS, MA 37342 507 32 1 MOVITEL, MZ 24757 479 73 5 EthioNet-AS, ET 15399 457 54 50 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11617 3387 596 UNINET, MX 9808 9526 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8806 10937 3168 AMAZON-02, US 12479 7310 1706 141 UNI2-AS, ES 7545 5682 784 689 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4853 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4525 300 620 CABLEONE, US 18403 4250 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4194 288 101 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9526 9486 CHINAMOBILE-CN China Mobile Communications Grou 12479 7310 7169 UNI2-AS, ES 16509 8806 5638 AMAZON-02, US 7545 5682 4993 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4853 4778 ERX-CERNET-BKB China Education and Research Net 18403 4250 4225 FPT-AS-AP FPT Telecom Company, VN 7155 4194 4093 VIASAT-SP-BACKBONE, US 20940 4074 3916 AKAMAI-ASN1, NL 11492 4525 3905 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 7015 COMCAST-7015, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.176.160.0/24 Origin: 397327 UNASSIGNED 23.176.160.0/24 Transit: 19108 SUDDENLINK-COMMUNICATIONS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:102 /12:297 /13:579 /14:1198 /15:2071 /16:13473 /17:8279 /18:13876 /19:25203 /20:44422 /21:51527 /22:110199 /23:98821 /24:556744 /25:748 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6400 7310 UNI2-AS, ES 8151 5586 11617 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3434 4525 CABLEONE, US 6327 3335 3525 SHAW, CA 7155 3139 4194 VIASAT-SP-BACKBONE, US 8551 2923 3454 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2607 3541 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2169 2514 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2092 3533 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2218 2:1347 3:245 4:5 5:4487 6:131 7:6 8:1553 9:1 11:172 12:1523 13:374 14:2308 15:302 16:198 17:373 18:540 20:271 21:4 22:188 23:6371 24:2477 25:4 27:2504 29:19 31:2533 32:81 34:25 35:114 36:1945 37:4693 38:5087 39:832 40:152 41:3887 42:2033 43:2328 44:305 45:16659 46:4339 47:381 49:1789 50:1862 51:584 52:1592 54:390 55:979 56:8 57:120 58:1892 59:1170 60:989 61:2487 62:2673 63:1926 64:5571 65:2291 66:4951 67:3050 68:1326 69:4090 70:1208 71:679 72:2977 74:2637 75:1579 76:620 77:2448 78:1833 79:2952 80:2114 81:1805 82:1493 83:1269 84:1542 85:2985 86:766 87:2014 88:1175 89:3840 90:619 91:7797 92:2066 93:2605 94:3568 95:4042 96:1295 97:329 98:1149 99:735 100:95 101:1083 102:2832 103:31834 104:4586 105:568 106:887 107:2557 108:1098 109:4244 110:2107 111:3174 112:2062 113:1810 114:1647 115:1985 116:1913 117:2514 118:2672 119:1980 120:1816 121:1140 122:2577 123:2184 124:1618 125:2516 128:1450 129:1047 130:1020 131:1968 132:814 133:422 134:1791 135:306 136:881 137:960 138:2623 139:1581 140:1253 141:1302 142:1476 143:1492 144:1006 145:342 146:1960 147:1596 148:2431 149:2170 150:881 151:1170 152:1849 153:506 154:4696 155:1379 156:1891 157:1323 158:1099 159:2231 160:2595 161:1571 162:3510 163:1569 164:1721 165:1849 166:1039 167:1738 168:3878 169:935 170:4625 171:902 172:3644 173:2988 174:1045 175:1147 176:3747 177:4482 178:3619 179:2165 180:2458 181:3491 182:3444 183:1989 184:2296 185:20488 186:4737 187:4111 188:4126 189:3721 190:9230 191:1389 192:10941 193:8945 194:7310 195:5178 196:3121 197:2465 198:6021 199:6096 200:7991 201:5906 202:10612 203:10095 204:4560 205:3660 206:4353 207:3450 208:4145 209:4933 210:4478 211:2534 212:4255 213:3593 214:1096 215:60 216:6721 217:2761 218:1282 219:584 220:2032 221:961 222:854 223:2191 End of report

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 21 Jul '23

21 Jul '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 22 Jul, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 927100 Prefixes after maximum aggregation (per Origin AS): 351578 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 452379 Total ASes present in the Internet Routing Table: 74596 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64039 Origin ASes announcing only one prefix: 26302 Transit ASes present in the Internet Routing Table: 10557 Transit-only ASes present in the Internet Routing Table: 450 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (263725) 64 Prefixes from unregistered ASNs in the Routing Table: 1101 Number of instances of unregistered ASNs: 1103 Number of 32-bit ASNs allocated by the RIRs: 42276 Number of 32-bit ASNs visible in the Routing Table: 34837 Prefixes from 32-bit ASNs in the Routing Table: 173955 Number of bogon 32-bit ASNs visible in the Routing Table: 34 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 611 Number of addresses announced to Internet: 3054068736 Equivalent to 182 /8s, 9 /16s and 100 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 308840 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 246161 Total APNIC prefixes after maximum aggregation: 70004 APNIC Deaggregation factor: 3.52 Prefixes being announced from the APNIC address blocks: 239893 Unique aggregates announced from the APNIC address blocks: 98720 APNIC Region origin ASes present in the Internet Routing Table: 13527 APNIC Prefixes per ASN: 17.73 APNIC Region origin ASes announcing only one prefix: 4004 APNIC Region transit ASes present in the Internet Routing Table: 1797 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 28 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8850 Number of APNIC addresses announced to Internet: 773626240 Equivalent to 46 /8s, 28 /16s and 153 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271793 Total ARIN prefixes after maximum aggregation: 123669 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 274020 Unique aggregates announced from the ARIN address blocks: 130777 ARIN Region origin ASes present in the Internet Routing Table: 19095 ARIN Prefixes per ASN: 14.35 ARIN Region origin ASes announcing only one prefix: 6959 ARIN Region transit ASes present in the Internet Routing Table: 1953 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4818 Number of ARIN addresses announced to Internet: 1277193984 Equivalent to 76 /8s, 32 /16s and 111 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260013 Total RIPE prefixes after maximum aggregation: 122678 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256847 Unique aggregates announced from the RIPE address blocks: 160046 RIPE Region origin ASes present in the Internet Routing Table: 28352 RIPE Prefixes per ASN: 9.06 RIPE Region origin ASes announcing only one prefix: 12035 RIPE Region transit ASes present in the Internet Routing Table: 3944 Average RIPE Region AS path length visible: 4.2 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11247 Number of RIPE addresses announced to Internet: 716894592 Equivalent to 42 /8s, 186 /16s and 241 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118670 Total LACNIC prefixes after maximum aggregation: 28610 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 117785 Unique aggregates announced from the LACNIC address blocks: 49635 LACNIC Region origin ASes present in the Internet Routing Table: 11009 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2693 LACNIC Region transit ASes present in the Internet Routing Table: 2334 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8811 Number of LACNIC addresses announced to Internet: 178450944 Equivalent to 10 /8s, 162 /16s and 242 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29362 Total AfriNIC prefixes after maximum aggregation: 5893 AfriNIC Deaggregation factor: 4.98 Prefixes being announced from the AfriNIC address blocks: 37944 Unique aggregates announced from the AfriNIC address blocks: 12692 AfriNIC Region origin ASes present in the Internet Routing Table: 1765 AfriNIC Prefixes per ASN: 21.50 AfriNIC Region origin ASes announcing only one prefix: 611 AfriNIC Region transit ASes present in the Internet Routing Table: 326 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 40 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1111 Number of AfriNIC addresses announced to Internet: 107557632 Equivalent to 6 /8s, 105 /16s and 51 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9527 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5686 784 692 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4857 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4241 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3588 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3381 1856 96 VNPT-AS-VN VNPT Corp, VN 7552 3345 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3048 497 247 BBIL-AP BHARTI Airtel Ltd., IN 4766 2545 11271 592 KIXS-AS-KR Korea Telecom, KR 24560 2452 835 443 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8701 10914 3133 AMAZON-02, US 11492 4516 300 615 CABLEONE, US 7155 4194 289 101 VIASAT-SP-BACKBONE, US 22773 3542 3054 269 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3525 1319 66 SHAW, CA 16625 3168 1577 2375 AKAMAI-AS, US 749 3140 54962 2392 DNIC-AS-00749, US 367 2762 3753 1322 DNIC-ASBLK-00306-00371, US 396982 2677 3595 383 GOOGLE-CLOUD-PLATFORM, US 30036 2514 362 355 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7299 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4092 3398 161 AKAMAI-ASN1, NL 8551 3461 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2971 2294 913 ROSTELECOM-AS, RU 9009 2660 246 1381 M247, RO 34984 2313 361 608 TELLCOM-AS, TR 58224 1824 944 540 TCI, IR 6849 1798 307 17 UKRTELNET, UA 13188 1606 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11606 3358 592 UNINET, MX 10620 3529 507 836 Telmex Colombia S.A., CO 13999 2409 361 631 Mega Cable, S.A. de C.V., MX 11830 2107 369 64 Instituto Costarricense de Electricidad 28573 1317 2322 238 Claro NXT Telecomunicacoes Ltda, BR 3816 1300 767 172 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1300 344 511 Axtel, S.A.B. de C.V., MX 6147 1130 370 22 Telefonica del Peru S.A.A., PE 11664 1104 177 436 Techtel LMDS Comunicaciones Interactiva 26615 1038 2500 48 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1604 393 19 LINKdotNET-AS, EG 24835 1517 533 27 RAYA-AS, EG 36992 1296 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1052 67 45 ORANGE-COTE-IVOIRE, CI 36935 922 521 43 Vodafone-, EG 6713 551 1861 34 IAM-AS, MA 37342 505 32 1 MOVITEL, MZ 24757 485 73 5 EthioNet-AS, ET 15399 458 54 50 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11606 3358 592 UNINET, MX 9808 9527 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8701 10914 3133 AMAZON-02, US 12479 7299 1706 141 UNI2-AS, ES 7545 5686 784 692 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4857 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4516 300 615 CABLEONE, US 18403 4241 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4194 289 101 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9527 9487 CHINAMOBILE-CN China Mobile Communications Grou 12479 7299 7158 UNI2-AS, ES 16509 8701 5568 AMAZON-02, US 7545 5686 4994 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4857 4782 ERX-CERNET-BKB China Education and Research Net 18403 4241 4216 FPT-AS-AP FPT Telecom Company, VN 7155 4194 4093 VIASAT-SP-BACKBONE, US 20940 4092 3931 AKAMAI-ASN1, NL 11492 4516 3901 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 7015 COMCAST-7015, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.158.88.0/24 Origin: 20473 AS-CHOOPA, US 23.158.88.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.176.160.0/24 Origin: 397327 UNASSIGNED 23.176.160.0/24 Transit: 19108 SUDDENLINK-COMMUNICATIONS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:102 /12:296 /13:576 /14:1198 /15:2073 /16:13485 /17:8280 /18:13845 /19:25211 /20:44431 /21:51530 /22:110165 /23:98844 /24:556249 /25:746 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6387 7299 UNI2-AS, ES 8151 5540 11606 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3425 4516 CABLEONE, US 6327 3335 3525 SHAW, CA 7155 3139 4194 VIASAT-SP-BACKBONE, US 8551 2930 3461 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2607 3542 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2169 2514 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2088 3529 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2210 2:1354 3:230 4:5 5:4499 6:131 7:6 8:1552 9:1 11:172 12:1522 13:379 14:2321 15:301 16:198 17:374 18:523 20:268 21:4 22:188 23:6374 24:2614 25:4 27:2489 29:19 31:2530 32:81 34:25 35:114 36:1983 37:4694 38:5030 39:829 40:152 41:3844 42:2026 43:2326 44:303 45:16675 46:4376 47:377 49:1773 50:1856 51:584 52:1592 54:397 55:975 56:8 57:120 58:1891 59:1147 60:984 61:2498 62:2658 63:1922 64:5571 65:2316 66:4948 67:3049 68:1328 69:4092 70:1210 71:677 72:2984 74:2648 75:1581 76:617 77:2447 78:1826 79:2977 80:2110 81:1804 82:1491 83:1271 84:1539 85:2983 86:765 87:1992 88:1185 89:3837 90:613 91:7795 92:2049 93:2605 94:3580 95:4047 96:1306 97:331 98:1149 99:734 100:95 101:1082 102:2813 103:31766 104:4577 105:501 106:887 107:2556 108:1078 109:4252 110:2111 111:3188 112:2060 113:1811 114:1643 115:1970 116:1912 117:2516 118:2633 119:1983 120:1817 121:1138 122:2573 123:2184 124:1614 125:2498 128:1426 129:1047 130:1015 131:1967 132:813 133:422 134:1801 135:307 136:888 137:962 138:2505 139:1584 140:1259 141:1300 142:1476 143:1493 144:987 145:341 146:1959 147:1611 148:2430 149:2164 150:882 151:1166 152:1832 153:500 154:4683 155:1368 156:1882 157:1320 158:1098 159:2270 160:2585 161:1554 162:3513 163:1566 164:1669 165:1854 166:1067 167:1729 168:3882 169:940 170:4597 171:891 172:3647 173:2974 174:1047 175:1192 176:3739 177:4496 178:3614 179:2157 180:2455 181:3493 182:3443 183:1983 184:2314 185:20517 186:4754 187:4103 188:4127 189:3718 190:9244 191:1391 192:10936 193:8931 194:7321 195:5173 196:3115 197:2292 198:6013 199:6090 200:8061 201:5932 202:10593 203:10131 204:4572 205:3679 206:4356 207:3457 208:4143 209:4927 210:4474 211:2532 212:4255 213:3587 214:1092 215:60 216:6669 217:2752 218:1277 219:584 220:2006 221:961 222:854 223:2188 End of report

1 0

RIS Beacons
by Emile Aben 20 Jul '23

20 Jul '23

Dear colleagues, Following on from discussion during the MAT WG session at RIPE 86, I wrote up a RIPE Labs article looking at why RIS beaconing is useful and how we can improve the existing setup to do more: https://labs.ripe.net/author/emileaben/ris-beaconing-shining-a-light-on-bgp… kind regards, Emile Aben RIPE NCC

1 0

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 14 Jul '23

14 Jul '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 15 Jul, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 926979 Prefixes after maximum aggregation (per Origin AS): 351217 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 451896 Total ASes present in the Internet Routing Table: 74578 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64040 Origin ASes announcing only one prefix: 26340 Transit ASes present in the Internet Routing Table: 10538 Transit-only ASes present in the Internet Routing Table: 439 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (263725) 64 Prefixes from unregistered ASNs in the Routing Table: 1048 Number of instances of unregistered ASNs: 1052 Number of 32-bit ASNs allocated by the RIRs: 42267 Number of 32-bit ASNs visible in the Routing Table: 34804 Prefixes from 32-bit ASNs in the Routing Table: 173237 Number of bogon 32-bit ASNs visible in the Routing Table: 29 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 564 Number of addresses announced to Internet: 3054440448 Equivalent to 182 /8s, 15 /16s and 16 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 309081 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 245848 Total APNIC prefixes after maximum aggregation: 69865 APNIC Deaggregation factor: 3.52 Prefixes being announced from the APNIC address blocks: 239678 Unique aggregates announced from the APNIC address blocks: 98658 APNIC Region origin ASes present in the Internet Routing Table: 13507 APNIC Prefixes per ASN: 17.74 APNIC Region origin ASes announcing only one prefix: 3997 APNIC Region transit ASes present in the Internet Routing Table: 1797 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8830 Number of APNIC addresses announced to Internet: 773696640 Equivalent to 46 /8s, 29 /16s and 172 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271645 Total ARIN prefixes after maximum aggregation: 123536 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 273939 Unique aggregates announced from the ARIN address blocks: 130821 ARIN Region origin ASes present in the Internet Routing Table: 19099 ARIN Prefixes per ASN: 14.34 ARIN Region origin ASes announcing only one prefix: 6971 ARIN Region transit ASes present in the Internet Routing Table: 1952 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4813 Number of ARIN addresses announced to Internet: 1277673984 Equivalent to 76 /8s, 39 /16s and 194 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 259956 Total RIPE prefixes after maximum aggregation: 122598 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256601 Unique aggregates announced from the RIPE address blocks: 159771 RIPE Region origin ASes present in the Internet Routing Table: 28356 RIPE Prefixes per ASN: 9.05 RIPE Region origin ASes announcing only one prefix: 12063 RIPE Region transit ASes present in the Internet Routing Table: 3928 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11233 Number of RIPE addresses announced to Internet: 716735872 Equivalent to 42 /8s, 184 /16s and 133 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118894 Total LACNIC prefixes after maximum aggregation: 28611 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 118013 Unique aggregates announced from the LACNIC address blocks: 49519 LACNIC Region origin ASes present in the Internet Routing Table: 11026 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2692 LACNIC Region transit ASes present in the Internet Routing Table: 2326 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8815 Number of LACNIC addresses announced to Internet: 178450432 Equivalent to 10 /8s, 162 /16s and 240 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29588 Total AfriNIC prefixes after maximum aggregation: 5891 AfriNIC Deaggregation factor: 5.02 Prefixes being announced from the AfriNIC address blocks: 38184 Unique aggregates announced from the AfriNIC address blocks: 12662 AfriNIC Region origin ASes present in the Internet Routing Table: 1766 AfriNIC Prefixes per ASN: 21.62 AfriNIC Region origin ASes announcing only one prefix: 617 AfriNIC Region transit ASes present in the Internet Routing Table: 329 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 30 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1113 Number of AfriNIC addresses announced to Internet: 107549184 Equivalent to 6 /8s, 105 /16s and 18 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9530 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5681 784 691 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4854 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4237 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3536 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3382 1872 93 VNPT-AS-VN VNPT Corp, VN 7552 3344 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3047 497 247 BBIL-AP BHARTI Airtel Ltd., IN 4766 2538 11270 591 KIXS-AS-KR Korea Telecom, KR 24560 2444 834 445 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8736 10892 3083 AMAZON-02, US 11492 4515 299 629 CABLEONE, US 7155 4172 288 88 VIASAT-SP-BACKBONE, US 22773 3544 3054 269 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3525 1319 66 SHAW, CA 16625 3153 1565 2366 AKAMAI-AS, US 749 3142 54962 2394 DNIC-AS-00749, US 367 2750 3750 1318 DNIC-ASBLK-00306-00371, US 396982 2676 3594 383 GOOGLE-CLOUD-PLATFORM, US 30036 2503 361 396 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7298 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4079 3398 161 AKAMAI-ASN1, NL 8551 3467 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2971 2294 913 ROSTELECOM-AS, RU 9009 2649 245 1376 M247, RO 34984 2307 361 609 TELLCOM-AS, TR 58224 1824 946 535 TCI, IR 6849 1800 307 17 UKRTELNET, UA 13188 1606 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11574 3376 592 UNINET, MX 10620 3529 507 840 Telmex Colombia S.A., CO 13999 2403 360 632 Mega Cable, S.A. de C.V., MX 11830 2225 369 64 Instituto Costarricense de Electricidad 28573 1316 2324 239 Claro NXT Telecomunicacoes Ltda, BR 3816 1306 774 170 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1303 344 511 Axtel, S.A.B. de C.V., MX 6147 1130 370 22 Telefonica del Peru S.A.A., PE 11664 1101 177 440 Techtel LMDS Comunicaciones Interactiva 26615 1037 2500 47 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1627 393 19 LINKdotNET-AS, EG 24835 1548 533 27 RAYA-AS, EG 36992 1352 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1052 67 45 ORANGE-COTE-IVOIRE, CI 36935 923 521 44 Vodafone-, EG 6713 551 1861 34 IAM-AS, MA 15399 534 54 50 WANANCHI-, KE 24757 485 73 5 EthioNet-AS, ET 37342 466 32 1 MOVITEL, MZ Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11574 3376 592 UNINET, MX 9808 9530 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8736 10892 3083 AMAZON-02, US 12479 7298 1706 141 UNI2-AS, ES 7545 5681 784 691 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4854 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4515 299 629 CABLEONE, US 18403 4237 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4172 288 88 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9530 9490 CHINAMOBILE-CN China Mobile Communications Grou 12479 7298 7157 UNI2-AS, ES 16509 8736 5653 AMAZON-02, US 7545 5681 4990 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4854 4779 ERX-CERNET-BKB China Education and Research Net 18403 4237 4212 FPT-AS-AP FPT Telecom Company, VN 7155 4172 4084 VIASAT-SP-BACKBONE, US 20940 4079 3918 AKAMAI-ASN1, NL 11492 4515 3886 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 7015 COMCAST-7015, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.176.160.0/24 Origin: 397327 UNASSIGNED 23.176.160.0/24 Transit: 19108 SUDDENLINK-COMMUNICATIONS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:103 /12:296 /13:577 /14:1200 /15:2073 /16:13473 /17:8273 /18:13877 /19:25230 /20:44407 /21:51589 /22:110169 /23:98735 /24:556159 /25:749 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6386 7298 UNI2-AS, ES 8151 5503 11574 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3426 4515 CABLEONE, US 6327 3335 3525 SHAW, CA 7155 3120 4172 VIASAT-SP-BACKBONE, US 8551 2936 3467 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2609 3544 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2158 2503 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2087 3529 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2208 2:1350 3:227 4:5 5:4496 6:130 7:6 8:1552 9:1 11:172 12:1520 13:382 14:2321 15:299 16:193 17:373 18:524 20:268 21:4 22:188 23:6373 24:2610 25:4 27:2473 29:19 31:2529 32:80 34:26 35:114 36:1966 37:4690 38:5006 39:829 40:152 41:3905 42:2020 43:2326 44:304 45:16637 46:4364 47:377 49:1773 50:1858 51:586 52:1595 54:397 55:976 56:8 57:120 58:1887 59:1149 60:984 61:2494 62:2664 63:1909 64:5604 65:2321 66:4989 67:3061 68:1334 69:4106 70:1210 71:687 72:2987 74:2639 75:1568 76:617 77:2445 78:1825 79:2979 80:2101 81:1796 82:1501 83:1264 84:1544 85:3002 86:765 87:2005 88:1182 89:3834 90:614 91:7786 92:2041 93:2602 94:3571 95:4048 96:1311 97:337 98:1153 99:735 100:95 101:1082 102:2806 103:31670 104:4575 105:504 106:886 107:2556 108:1077 109:4244 110:2111 111:3184 112:2061 113:1813 114:1644 115:1975 116:1916 117:2530 118:2618 119:1989 120:1820 121:1136 122:2570 123:2181 124:1617 125:2495 128:1458 129:1059 130:1017 131:1991 132:812 133:422 134:1800 135:307 136:886 137:954 138:2540 139:1591 140:1258 141:1299 142:1476 143:1502 144:988 145:341 146:1964 147:1587 148:2430 149:2139 150:883 151:1166 152:1834 153:496 154:4649 155:1358 156:1833 157:1316 158:1088 159:2267 160:2582 161:1554 162:3508 163:1569 164:1623 165:1866 166:1066 167:1714 168:3878 169:950 170:4614 171:890 172:3645 173:2966 174:1090 175:1192 176:3744 177:4492 178:3607 179:2173 180:2446 181:3493 182:3438 183:1993 184:2324 185:20482 186:4745 187:4088 188:4122 189:3710 190:9253 191:1391 192:10933 193:8925 194:7327 195:5140 196:3112 197:2379 198:5999 199:6105 200:8083 201:5948 202:10600 203:10127 204:4563 205:3701 206:4339 207:3458 208:4144 209:4933 210:4474 211:2527 212:4253 213:3590 214:1091 215:59 216:6680 217:2737 218:1297 219:584 220:1985 221:965 222:855 223:2185 End of report

1 0

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 07 Jul '23

07 Jul '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 08 Jul, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 927158 Prefixes after maximum aggregation (per Origin AS): 351334 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 451954 Total ASes present in the Internet Routing Table: 74563 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64025 Origin ASes announcing only one prefix: 26303 Transit ASes present in the Internet Routing Table: 10538 Transit-only ASes present in the Internet Routing Table: 449 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (263725) 64 Prefixes from unregistered ASNs in the Routing Table: 1030 Number of instances of unregistered ASNs: 1034 Number of 32-bit ASNs allocated by the RIRs: 42257 Number of 32-bit ASNs visible in the Routing Table: 34790 Prefixes from 32-bit ASNs in the Routing Table: 173625 Number of bogon 32-bit ASNs visible in the Routing Table: 121 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 549 Number of addresses announced to Internet: 3055806464 Equivalent to 182 /8s, 35 /16s and 232 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 309210 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 245929 Total APNIC prefixes after maximum aggregation: 69872 APNIC Deaggregation factor: 3.52 Prefixes being announced from the APNIC address blocks: 239749 Unique aggregates announced from the APNIC address blocks: 98761 APNIC Region origin ASes present in the Internet Routing Table: 13500 APNIC Prefixes per ASN: 17.76 APNIC Region origin ASes announcing only one prefix: 4010 APNIC Region transit ASes present in the Internet Routing Table: 1796 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8826 Number of APNIC addresses announced to Internet: 773579392 Equivalent to 46 /8s, 27 /16s and 226 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271431 Total ARIN prefixes after maximum aggregation: 123582 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 273803 Unique aggregates announced from the ARIN address blocks: 130901 ARIN Region origin ASes present in the Internet Routing Table: 19104 ARIN Prefixes per ASN: 14.33 ARIN Region origin ASes announcing only one prefix: 6970 ARIN Region transit ASes present in the Internet Routing Table: 1959 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4814 Number of ARIN addresses announced to Internet: 1278757632 Equivalent to 76 /8s, 56 /16s and 75 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260245 Total RIPE prefixes after maximum aggregation: 122727 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256783 Unique aggregates announced from the RIPE address blocks: 159728 RIPE Region origin ASes present in the Internet Routing Table: 28357 RIPE Prefixes per ASN: 9.06 RIPE Region origin ASes announcing only one prefix: 12044 RIPE Region transit ASes present in the Internet Routing Table: 3939 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11231 Number of RIPE addresses announced to Internet: 717248384 Equivalent to 42 /8s, 192 /16s and 87 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118958 Total LACNIC prefixes after maximum aggregation: 28592 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 118102 Unique aggregates announced from the LACNIC address blocks: 49495 LACNIC Region origin ASes present in the Internet Routing Table: 11017 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2303 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8807 Number of LACNIC addresses announced to Internet: 178396928 Equivalent to 10 /8s, 162 /16s and 31 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29565 Total AfriNIC prefixes after maximum aggregation: 5861 AfriNIC Deaggregation factor: 5.04 Prefixes being announced from the AfriNIC address blocks: 38172 Unique aggregates announced from the AfriNIC address blocks: 12612 AfriNIC Region origin ASes present in the Internet Routing Table: 1763 AfriNIC Prefixes per ASN: 21.65 AfriNIC Region origin ASes announcing only one prefix: 618 AfriNIC Region transit ASes present in the Internet Routing Table: 329 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 40 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1112 Number of AfriNIC addresses announced to Internet: 107498240 Equivalent to 6 /8s, 104 /16s and 75 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9534 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5685 784 692 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4856 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4216 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3553 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3380 1856 96 VNPT-AS-VN VNPT Corp, VN 7552 3335 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3043 498 248 BBIL-AP BHARTI Airtel Ltd., IN 4766 2558 11271 592 KIXS-AS-KR Korea Telecom, KR 24560 2442 836 445 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8680 10904 3120 AMAZON-02, US 11492 4522 300 614 CABLEONE, US 7155 4170 288 87 VIASAT-SP-BACKBONE, US 22773 3544 3054 269 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3524 1319 66 SHAW, CA 16625 3147 1559 2365 AKAMAI-AS, US 749 3143 54962 2395 DNIC-AS-00749, US 367 2743 3743 1311 DNIC-ASBLK-00306-00371, US 396982 2674 3594 384 GOOGLE-CLOUD-PLATFORM, US 30036 2492 360 431 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7301 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4083 3398 160 AKAMAI-ASN1, NL 8551 3466 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2972 2294 913 ROSTELECOM-AS, RU 9009 2654 246 1384 M247, RO 34984 2307 361 609 TELLCOM-AS, TR 58224 1832 946 535 TCI, IR 6849 1800 307 17 UKRTELNET, UA 13188 1606 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11544 3376 592 UNINET, MX 10620 3531 507 841 Telmex Colombia S.A., CO 13999 2403 360 631 Mega Cable, S.A. de C.V., MX 11830 2222 369 64 Instituto Costarricense de Electricidad 28573 1316 2324 238 Claro NXT Telecomunicacoes Ltda, BR 3816 1306 774 170 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1303 344 511 Axtel, S.A.B. de C.V., MX 6147 1131 370 22 Telefonica del Peru S.A.A., PE 11664 1102 177 437 Techtel LMDS Comunicaciones Interactiva 26615 1036 2500 47 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1617 393 19 LINKdotNET-AS, EG 24835 1548 533 27 RAYA-AS, EG 36992 1314 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1053 67 46 ORANGE-COTE-IVOIRE, CI 36935 923 521 44 Vodafone-, EG 6713 550 1861 34 IAM-AS, MA 15399 534 54 50 WANANCHI-, KE 24757 488 73 5 EthioNet-AS, ET 37342 468 32 1 MOVITEL, MZ Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11544 3376 592 UNINET, MX 9808 9534 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8680 10904 3120 AMAZON-02, US 12479 7301 1706 141 UNI2-AS, ES 7545 5685 784 692 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4856 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4522 300 614 CABLEONE, US 18403 4216 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4170 288 87 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9534 9494 CHINAMOBILE-CN China Mobile Communications Grou 12479 7301 7160 UNI2-AS, ES 16509 8680 5560 AMAZON-02, US 7545 5685 4993 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4856 4781 ERX-CERNET-BKB China Education and Research Net 18403 4216 4191 FPT-AS-AP FPT Telecom Company, VN 7155 4170 4083 VIASAT-SP-BACKBONE, US 20940 4083 3923 AKAMAI-ASN1, NL 11492 4522 3908 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 46887 LIGHTOWER, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 18798 UNALLOCATED 8.40.106.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.157.120.0/24 Origin: 32872 UNASSIGNED 23.157.120.0/24 Transit: 6939 HURRICANE, US 23.157.136.0/24 Origin: 6145 SYNIO-NET, CA 23.157.136.0/24 Transit: 50058 August Internet, GB 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:103 /12:297 /13:577 /14:1201 /15:2075 /16:13470 /17:8265 /18:13855 /19:25227 /20:44404 /21:51538 /22:110124 /23:98754 /24:556448 /25:751 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6389 7301 UNI2-AS, ES 8151 5472 11544 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3431 4522 CABLEONE, US 6327 3334 3524 SHAW, CA 7155 3118 4170 VIASAT-SP-BACKBONE, US 8551 2935 3466 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2609 3544 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2147 2492 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2089 3531 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2192 2:1341 3:227 4:5 5:4516 6:130 7:6 8:1553 9:1 11:172 12:1517 13:387 14:2323 15:299 16:196 17:373 18:502 20:262 21:4 22:188 23:6365 24:2535 25:6 27:2467 29:19 31:2518 32:80 34:23 35:114 36:1966 37:4689 38:5001 39:827 40:151 41:3936 42:2006 43:2339 44:304 45:16666 46:4371 47:377 49:1770 50:1862 51:585 52:1590 54:395 55:978 56:8 57:119 58:1888 59:1161 60:984 61:2501 62:2660 63:1912 64:5621 65:2319 66:5040 67:3047 68:1354 69:4098 70:1212 71:687 72:2987 74:2634 75:1567 76:615 77:2456 78:1836 79:2981 80:2120 81:1788 82:1499 83:1258 84:1549 85:3005 86:770 87:2007 88:1188 89:3801 90:615 91:7773 92:2046 93:2606 94:3580 95:4058 96:1313 97:340 98:1136 99:736 100:94 101:1080 102:2802 103:31670 104:4567 105:506 106:894 107:2559 108:1084 109:4249 110:2101 111:3188 112:2061 113:1815 114:1644 115:1971 116:1912 117:2536 118:2618 119:1987 120:1821 121:1135 122:2602 123:2178 124:1620 125:2495 128:1460 129:1057 130:1016 131:1970 132:812 133:422 134:1798 135:308 136:890 137:953 138:2541 139:1577 140:1253 141:1359 142:1472 143:1509 144:1038 145:340 146:1959 147:1585 148:2430 149:2187 150:876 151:1166 152:1846 153:496 154:4650 155:1389 156:1814 157:1313 158:1089 159:2265 160:2583 161:1559 162:3512 163:1566 164:1607 165:1857 166:1077 167:1719 168:3871 169:953 170:4618 171:888 172:3638 173:2960 174:1085 175:1193 176:3780 177:4515 178:3614 179:2169 180:2437 181:3488 182:3435 183:1996 184:2323 185:20456 186:4770 187:4081 188:4124 189:3704 190:9256 191:1391 192:10927 193:8935 194:7339 195:5162 196:3120 197:2378 198:5994 199:6111 200:8091 201:5929 202:10596 203:10135 204:4571 205:3709 206:4334 207:3444 208:4145 209:4930 210:4473 211:2532 212:4261 213:3606 214:1085 215:59 216:6669 217:2762 218:1297 219:584 220:2000 221:965 222:855 223:2187 End of report

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 30 Jun '23

30 Jun '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 01 Jul, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 926783 Prefixes after maximum aggregation (per Origin AS): 350989 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 451559 Total ASes present in the Internet Routing Table: 74553 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64022 Origin ASes announcing only one prefix: 26312 Transit ASes present in the Internet Routing Table: 10531 Transit-only ASes present in the Internet Routing Table: 437 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1039 Number of instances of unregistered ASNs: 1043 Number of 32-bit ASNs allocated by the RIRs: 42198 Number of 32-bit ASNs visible in the Routing Table: 34769 Prefixes from 32-bit ASNs in the Routing Table: 173345 Number of bogon 32-bit ASNs visible in the Routing Table: 25 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 557 Number of addresses announced to Internet: 3054653952 Equivalent to 182 /8s, 18 /16s and 82 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 309201 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 245979 Total APNIC prefixes after maximum aggregation: 69770 APNIC Deaggregation factor: 3.53 Prefixes being announced from the APNIC address blocks: 239835 Unique aggregates announced from the APNIC address blocks: 98665 APNIC Region origin ASes present in the Internet Routing Table: 13484 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 3985 APNIC Region transit ASes present in the Internet Routing Table: 1787 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8806 Number of APNIC addresses announced to Internet: 773544576 Equivalent to 46 /8s, 27 /16s and 90 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271273 Total ARIN prefixes after maximum aggregation: 123356 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 273760 Unique aggregates announced from the ARIN address blocks: 130697 ARIN Region origin ASes present in the Internet Routing Table: 19114 ARIN Prefixes per ASN: 14.32 ARIN Region origin ASes announcing only one prefix: 6987 ARIN Region transit ASes present in the Internet Routing Table: 1956 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4816 Number of ARIN addresses announced to Internet: 1278673152 Equivalent to 76 /8s, 55 /16s and 1 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260071 Total RIPE prefixes after maximum aggregation: 122756 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256523 Unique aggregates announced from the RIPE address blocks: 159652 RIPE Region origin ASes present in the Internet Routing Table: 28359 RIPE Prefixes per ASN: 9.05 RIPE Region origin ASes announcing only one prefix: 12047 RIPE Region transit ASes present in the Internet Routing Table: 3953 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11230 Number of RIPE addresses announced to Internet: 717425536 Equivalent to 42 /8s, 195 /16s and 11 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118844 Total LACNIC prefixes after maximum aggregation: 28555 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 117974 Unique aggregates announced from the LACNIC address blocks: 49532 LACNIC Region origin ASes present in the Internet Routing Table: 11019 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2301 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 55 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8807 Number of LACNIC addresses announced to Internet: 176968192 Equivalent to 10 /8s, 140 /16s and 82 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29576 Total AfriNIC prefixes after maximum aggregation: 5845 AfriNIC Deaggregation factor: 5.06 Prefixes being announced from the AfriNIC address blocks: 38134 Unique aggregates announced from the AfriNIC address blocks: 12554 AfriNIC Region origin ASes present in the Internet Routing Table: 1760 AfriNIC Prefixes per ASN: 21.67 AfriNIC Region origin ASes announcing only one prefix: 619 AfriNIC Region transit ASes present in the Internet Routing Table: 329 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1110 Number of AfriNIC addresses announced to Internet: 107715840 Equivalent to 6 /8s, 107 /16s and 157 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9524 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5685 784 696 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4856 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4233 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3553 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3379 1856 96 VNPT-AS-VN VNPT Corp, VN 7552 3313 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3047 498 252 BBIL-AP BHARTI Airtel Ltd., IN 4766 2561 11271 592 KIXS-AS-KR Korea Telecom, KR 24560 2434 837 441 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8669 10886 3143 AMAZON-02, US 11492 4519 300 614 CABLEONE, US 7155 4170 288 87 VIASAT-SP-BACKBONE, US 22773 3536 3053 260 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3524 1319 66 SHAW, CA 16625 3137 1559 2360 AKAMAI-AS, US 749 3125 54969 2377 DNIC-AS-00749, US 367 2736 3748 1309 DNIC-ASBLK-00306-00371, US 396982 2670 3594 381 GOOGLE-CLOUD-PLATFORM, US 30036 2496 360 438 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7293 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4091 3398 162 AKAMAI-ASN1, NL 8551 3465 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2967 2292 912 ROSTELECOM-AS, RU 9009 2660 247 1383 M247, RO 34984 2307 361 609 TELLCOM-AS, TR 58224 1831 946 535 TCI, IR 6849 1824 307 17 UKRTELNET, UA 13188 1606 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11494 3373 591 UNINET, MX 10620 3529 507 843 Telmex Colombia S.A., CO 13999 2378 355 627 Mega Cable, S.A. de C.V., MX 11830 2269 369 64 Instituto Costarricense de Electricidad 28573 1318 2323 241 Claro NXT Telecomunicacoes Ltda, BR 3816 1306 774 170 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1304 344 511 Axtel, S.A.B. de C.V., MX 6147 1127 370 22 Telefonica del Peru S.A.A., PE 11664 1099 177 437 Techtel LMDS Comunicaciones Interactiva 26615 1038 2500 47 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1628 393 19 LINKdotNET-AS, EG 24835 1548 533 27 RAYA-AS, EG 36992 1313 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1038 67 46 ORANGE-COTE-IVOIRE, CI 36935 917 520 42 Vodafone-, EG 6713 550 1861 34 IAM-AS, MA 15399 534 54 50 WANANCHI-, KE 24757 495 73 5 EthioNet-AS, ET 37342 475 32 1 MOVITEL, MZ Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11494 3373 591 UNINET, MX 9808 9524 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8669 10886 3143 AMAZON-02, US 12479 7293 1706 141 UNI2-AS, ES 7545 5685 784 696 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4856 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4519 300 614 CABLEONE, US 18403 4233 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4170 288 87 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9524 9484 CHINAMOBILE-CN China Mobile Communications Grou 12479 7293 7152 UNI2-AS, ES 16509 8669 5526 AMAZON-02, US 7545 5685 4989 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4856 4781 ERX-CERNET-BKB China Education and Research Net 18403 4233 4208 FPT-AS-AP FPT Telecom Company, VN 7155 4170 4083 VIASAT-SP-BACKBONE, US 20940 4091 3929 AKAMAI-ASN1, NL 11492 4519 3905 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 46887 LIGHTOWER, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW 41.57.124.0/23 Origin: 37442 UNASSIGNED 41.57.124.0/23 Transit: 37204 TELONE, ZW Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:103 /12:299 /13:578 /14:1199 /15:2072 /16:13477 /17:8268 /18:13859 /19:25214 /20:44226 /21:51536 /22:110129 /23:98598 /24:556409 /25:747 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6381 7293 UNI2-AS, ES 8151 5423 11494 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3428 4519 CABLEONE, US 6327 3334 3524 SHAW, CA 7155 3118 4170 VIASAT-SP-BACKBONE, US 8551 2934 3465 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2606 3536 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2152 2496 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2088 3529 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2200 2:1333 3:224 4:5 5:4528 6:129 7:6 8:1552 9:1 11:172 12:1519 13:386 14:2320 15:301 16:196 17:373 18:496 20:260 21:4 22:188 23:6359 24:2601 25:6 27:2490 29:19 31:2513 32:81 34:23 35:114 36:1978 37:4691 38:4985 39:828 40:151 41:3943 42:2014 43:2343 44:303 45:16621 46:4385 47:373 49:1766 50:1872 51:586 52:1596 54:395 55:978 56:8 57:119 58:1890 59:1160 60:981 61:2498 62:2677 63:1909 64:5605 65:2319 66:5039 67:3065 68:1357 69:4124 70:1214 71:688 72:2984 74:2634 75:1565 76:613 77:2448 78:1829 79:2984 80:2111 81:1795 82:1511 83:1255 84:1558 85:3013 86:749 87:2010 88:1184 89:3761 90:614 91:7762 92:2040 93:2610 94:3567 95:4057 96:1312 97:341 98:1135 99:736 100:94 101:1078 102:2784 103:31653 104:4570 105:504 106:894 107:2570 108:1058 109:4225 110:2107 111:3182 112:2055 113:1805 114:1645 115:1973 116:1912 117:2533 118:2623 119:1986 120:1834 121:1138 122:2619 123:2178 124:1619 125:2508 128:1466 129:1058 130:1015 131:1977 132:814 133:422 134:1799 135:309 136:887 137:950 138:2535 139:1569 140:1250 141:1417 142:1465 143:1507 144:1102 145:341 146:1965 147:1590 148:2431 149:2220 150:870 151:1161 152:1844 153:494 154:4639 155:1394 156:1802 157:1310 158:1086 159:2263 160:2563 161:1518 162:3508 163:1566 164:1607 165:1856 166:1089 167:1714 168:3862 169:953 170:4611 171:895 172:3633 173:2968 174:1083 175:1188 176:3762 177:4518 178:3614 179:2176 180:2440 181:3489 182:3438 183:2025 184:2325 185:20411 186:4824 187:4039 188:4118 189:3705 190:9242 191:1393 192:10914 193:8946 194:7338 195:5147 196:3123 197:2384 198:5993 199:6100 200:8003 201:5958 202:10591 203:10142 204:4557 205:3718 206:4329 207:3446 208:4137 209:4938 210:4478 211:2525 212:4273 213:3623 214:1087 215:59 216:6690 217:2764 218:1295 219:582 220:1995 221:963 222:856 223:2185 End of report

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 23 Jun '23

23 Jun '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 24 Jun, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 926756 Prefixes after maximum aggregation (per Origin AS): 351055 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 451294 Total ASes present in the Internet Routing Table: 74556 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 64018 Origin ASes announcing only one prefix: 26297 Transit ASes present in the Internet Routing Table: 10538 Transit-only ASes present in the Internet Routing Table: 439 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 1011 Number of instances of unregistered ASNs: 1015 Number of 32-bit ASNs allocated by the RIRs: 42143 Number of 32-bit ASNs visible in the Routing Table: 34750 Prefixes from 32-bit ASNs in the Routing Table: 173096 Number of bogon 32-bit ASNs visible in the Routing Table: 25 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 566 Number of addresses announced to Internet: 3055960832 Equivalent to 182 /8s, 38 /16s and 67 /24s Percentage of available address space announced: 82.5 Percentage of allocated address space announced: 82.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 309129 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 246375 Total APNIC prefixes after maximum aggregation: 69688 APNIC Deaggregation factor: 3.54 Prefixes being announced from the APNIC address blocks: 240356 Unique aggregates announced from the APNIC address blocks: 98626 APNIC Region origin ASes present in the Internet Routing Table: 13490 APNIC Prefixes per ASN: 17.82 APNIC Region origin ASes announcing only one prefix: 3986 APNIC Region transit ASes present in the Internet Routing Table: 1792 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8806 Number of APNIC addresses announced to Internet: 773910656 Equivalent to 46 /8s, 32 /16s and 240 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 271252 Total ARIN prefixes after maximum aggregation: 123431 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 273839 Unique aggregates announced from the ARIN address blocks: 130833 ARIN Region origin ASes present in the Internet Routing Table: 19129 ARIN Prefixes per ASN: 14.32 ARIN Region origin ASes announcing only one prefix: 6993 ARIN Region transit ASes present in the Internet Routing Table: 1956 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4817 Number of ARIN addresses announced to Internet: 1279967232 Equivalent to 76 /8s, 74 /16s and 192 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260071 Total RIPE prefixes after maximum aggregation: 122848 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256267 Unique aggregates announced from the RIPE address blocks: 159393 RIPE Region origin ASes present in the Internet Routing Table: 28343 RIPE Prefixes per ASN: 9.04 RIPE Region origin ASes announcing only one prefix: 12035 RIPE Region transit ASes present in the Internet Routing Table: 3954 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11217 Number of RIPE addresses announced to Internet: 717362304 Equivalent to 42 /8s, 194 /16s and 20 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118574 Total LACNIC prefixes after maximum aggregation: 28538 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 117689 Unique aggregates announced from the LACNIC address blocks: 49558 LACNIC Region origin ASes present in the Internet Routing Table: 11017 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2304 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 52 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8808 Number of LACNIC addresses announced to Internet: 176947968 Equivalent to 10 /8s, 140 /16s and 3 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29473 Total AfriNIC prefixes after maximum aggregation: 5832 AfriNIC Deaggregation factor: 5.05 Prefixes being announced from the AfriNIC address blocks: 38039 Unique aggregates announced from the AfriNIC address blocks: 12419 AfriNIC Region origin ASes present in the Internet Routing Table: 1751 AfriNIC Prefixes per ASN: 21.72 AfriNIC Region origin ASes announcing only one prefix: 611 AfriNIC Region transit ASes present in the Internet Routing Table: 326 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 39 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1102 Number of AfriNIC addresses announced to Internet: 107444224 Equivalent to 6 /8s, 103 /16s and 120 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9521 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5677 784 695 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4857 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4223 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3554 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3374 1856 96 VNPT-AS-VN VNPT Corp, VN 7552 3371 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3042 498 252 BBIL-AP BHARTI Airtel Ltd., IN 4766 2548 11253 584 KIXS-AS-KR Korea Telecom, KR 24560 2433 837 441 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8558 10873 3156 AMAZON-02, US 11492 4514 299 625 CABLEONE, US 7155 4153 288 86 VIASAT-SP-BACKBONE, US 22773 3548 3053 268 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3524 1319 66 SHAW, CA 16625 3136 1560 2357 AKAMAI-AS, US 749 3125 54969 2377 DNIC-AS-00749, US 396982 2665 3594 377 GOOGLE-CLOUD-PLATFORM, US 30036 2511 362 395 MEDIACOM-ENTERPRISE-BUSINESS, US 7018 2452 24006 1557 ATT-INTERNET4, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7303 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4098 3398 162 AKAMAI-ASN1, NL 8551 3463 368 33 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2967 2292 912 ROSTELECOM-AS, RU 9009 2661 247 1383 M247, RO 34984 2298 361 605 TELLCOM-AS, TR 6849 1926 307 17 UKRTELNET, UA 58224 1830 946 537 TCI, IR 61317 1644 110 1275 ASDETUK www.heficed.com, US Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11445 3355 589 UNINET, MX 10620 3525 506 843 Telmex Colombia S.A., CO 13999 2370 354 631 Mega Cable, S.A. de C.V., MX 11830 2269 369 64 Instituto Costarricense de Electricidad 28573 1317 2323 241 Claro NXT Telecomunicacoes Ltda, BR 3816 1306 774 170 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1305 344 512 Axtel, S.A.B. de C.V., MX 6147 1133 370 22 Telefonica del Peru S.A.A., PE 11664 1102 180 440 Techtel LMDS Comunicaciones Interactiva 26615 1037 2500 47 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1581 393 19 LINKdotNET-AS, EG 24835 1536 533 27 RAYA-AS, EG 36992 1313 1518 282 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1039 67 47 ORANGE-COTE-IVOIRE, CI 36935 917 520 42 Vodafone-, EG 6713 550 1861 34 IAM-AS, MA 15399 534 54 49 WANANCHI-, KE 24757 495 73 5 EthioNet-AS, ET 37342 478 32 1 MOVITEL, MZ Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11445 3355 589 UNINET, MX 9808 9521 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8558 10873 3156 AMAZON-02, US 12479 7303 1706 141 UNI2-AS, ES 7545 5677 784 695 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4857 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4514 299 625 CABLEONE, US 18403 4223 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4153 288 86 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9521 9481 CHINAMOBILE-CN China Mobile Communications Grou 12479 7303 7162 UNI2-AS, ES 16509 8558 5402 AMAZON-02, US 7545 5677 4982 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4857 4782 ERX-CERNET-BKB China Education and Research Net 18403 4223 4198 FPT-AS-AP FPT Telecom Company, VN 7155 4153 4067 VIASAT-SP-BACKBONE, US 20940 4098 3936 AKAMAI-ASN1, NL 11492 4514 3889 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 46887 LIGHTOWER, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW 41.57.124.0/23 Origin: 37442 UNASSIGNED 41.57.124.0/23 Transit: 37204 TELONE, ZW Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:103 /12:300 /13:581 /14:1201 /15:2068 /16:13461 /17:8256 /18:13860 /19:25181 /20:44089 /21:51570 /22:110175 /23:98561 /24:556533 /25:748 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6391 7303 UNI2-AS, ES 8151 5378 11445 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3426 4514 CABLEONE, US 6327 3334 3524 SHAW, CA 7155 3111 4153 VIASAT-SP-BACKBONE, US 8551 2932 3463 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2614 3548 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2168 2511 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2084 3525 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2200 2:1322 3:215 4:5 5:4529 6:132 7:6 8:1539 9:1 11:172 12:1522 13:383 14:2313 15:302 16:192 17:372 18:468 20:262 21:4 22:188 23:6331 24:2600 25:6 27:2496 29:19 31:2510 32:81 34:22 35:114 36:1977 37:4673 38:4921 39:845 40:151 41:3931 42:2017 43:2331 44:307 45:16592 46:4316 47:377 49:1769 50:1877 51:585 52:1594 54:393 55:977 56:8 57:119 58:1890 59:1162 60:983 61:2530 62:2678 63:1915 64:5632 65:2315 66:5062 67:3065 68:1348 69:4137 70:1218 71:687 72:2990 74:2627 75:1565 76:617 77:2460 78:1827 79:3006 80:2115 81:1800 82:1497 83:1265 84:1531 85:3009 86:743 87:2010 88:1187 89:3756 90:616 91:7766 92:2047 93:2612 94:3608 95:4042 96:1314 97:336 98:1134 99:737 100:93 101:1080 102:2766 103:31635 104:4632 105:504 106:968 107:2577 108:1055 109:4205 110:2103 111:3176 112:2054 113:1797 114:1629 115:1980 116:1922 117:2524 118:2610 119:1985 120:1829 121:1138 122:2619 123:2181 124:1614 125:2507 128:1464 129:1056 130:1016 131:1967 132:816 133:422 134:1798 135:308 136:887 137:949 138:2566 139:1568 140:1263 141:1452 142:1452 143:1498 144:1126 145:340 146:1956 147:1584 148:2424 149:2223 150:880 151:1157 152:1843 153:491 154:4600 155:1415 156:1824 157:1312 158:1087 159:2268 160:2564 161:1554 162:3514 163:1548 164:1623 165:1838 166:1101 167:1714 168:3861 169:950 170:4595 171:899 172:3612 173:2970 174:1078 175:1184 176:3763 177:4586 178:3616 179:2110 180:2444 181:3488 182:3441 183:2074 184:2348 185:20407 186:4791 187:4005 188:4131 189:3686 190:9258 191:1439 192:10917 193:8925 194:7336 195:5166 196:3121 197:2389 198:5989 199:6096 200:7963 201:5939 202:10649 203:10293 204:4560 205:3695 206:4330 207:3457 208:4143 209:4934 210:4478 211:2525 212:4238 213:3625 214:1086 215:59 216:6694 217:2744 218:1296 219:582 220:1991 221:963 222:855 223:2203 End of report

1 0

RPKI Quarterly Planning Q3 2023
by Ties de Kock 22 Jun '23

22 Jun '23

Dear colleagues, We have published our next quarterly plans for RPKI on our website: https://www.ripe.net/manage-ips-and-asns/resource-management/rpki/rpki-plan… This quarter, we’ll continue the work on building an audit framework for RPKI and making improvements to the RPKI dashboard and rsync repositories. By sharing these plans with you, we want to inform you of the ongoing developments on RPKI and get your feedback on other work items you would like us to focus on. If you have any comments or questions, we hope you'll discuss with us on the list or, if you prefer, you can always contact the team directly at rpki(a)ripe.net . Kind regards, Ties de Kock Specialist Software Engineer RIPE NCC

2 1

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 16 Jun '23

16 Jun '23

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net. For historical data, please see https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 17 Jun, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 926000 Prefixes after maximum aggregation (per Origin AS): 350751 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 450771 Total ASes present in the Internet Routing Table: 74516 Prefixes per ASN: 12.43 Origin-only ASes present in the Internet Routing Table: 63992 Origin ASes announcing only one prefix: 26279 Transit ASes present in the Internet Routing Table: 10524 Transit-only ASes present in the Internet Routing Table: 438 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 55 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 1032 Number of instances of unregistered ASNs: 1034 Number of 32-bit ASNs allocated by the RIRs: 42072 Number of 32-bit ASNs visible in the Routing Table: 34704 Prefixes from 32-bit ASNs in the Routing Table: 172880 Number of bogon 32-bit ASNs visible in the Routing Table: 17 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 587 Number of addresses announced to Internet: 3056410880 Equivalent to 182 /8s, 45 /16s and 33 /24s Percentage of available address space announced: 82.6 Percentage of allocated address space announced: 82.6 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 308967 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 245881 Total APNIC prefixes after maximum aggregation: 69632 APNIC Deaggregation factor: 3.53 Prefixes being announced from the APNIC address blocks: 239932 Unique aggregates announced from the APNIC address blocks: 98508 APNIC Region origin ASes present in the Internet Routing Table: 13456 APNIC Prefixes per ASN: 17.83 APNIC Region origin ASes announcing only one prefix: 3973 APNIC Region transit ASes present in the Internet Routing Table: 1789 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8774 Number of APNIC addresses announced to Internet: 773694848 Equivalent to 46 /8s, 29 /16s and 165 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 270860 Total ARIN prefixes after maximum aggregation: 123221 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 273521 Unique aggregates announced from the ARIN address blocks: 130531 ARIN Region origin ASes present in the Internet Routing Table: 19120 ARIN Prefixes per ASN: 14.31 ARIN Region origin ASes announcing only one prefix: 6995 ARIN Region transit ASes present in the Internet Routing Table: 1952 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4815 Number of ARIN addresses announced to Internet: 1280361216 Equivalent to 76 /8s, 80 /16s and 195 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 260028 Total RIPE prefixes after maximum aggregation: 122814 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256155 Unique aggregates announced from the RIPE address blocks: 159307 RIPE Region origin ASes present in the Internet Routing Table: 28348 RIPE Prefixes per ASN: 9.04 RIPE Region origin ASes announcing only one prefix: 12044 RIPE Region transit ASes present in the Internet Routing Table: 3957 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11215 Number of RIPE addresses announced to Internet: 717534848 Equivalent to 42 /8s, 196 /16s and 182 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 118741 Total LACNIC prefixes after maximum aggregation: 28504 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 117869 Unique aggregates announced from the LACNIC address blocks: 49491 LACNIC Region origin ASes present in the Internet Routing Table: 11008 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2293 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 55 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8799 Number of LACNIC addresses announced to Internet: 177002752 Equivalent to 10 /8s, 140 /16s and 217 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 29458 Total AfriNIC prefixes after maximum aggregation: 5850 AfriNIC Deaggregation factor: 5.04 Prefixes being announced from the AfriNIC address blocks: 37936 Unique aggregates announced from the AfriNIC address blocks: 12452 AfriNIC Region origin ASes present in the Internet Routing Table: 1753 AfriNIC Prefixes per ASN: 21.64 AfriNIC Region origin ASes announcing only one prefix: 612 AfriNIC Region transit ASes present in the Internet Routing Table: 329 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 40 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1101 Number of AfriNIC addresses announced to Internet: 107417344 Equivalent to 6 /8s, 103 /16s and 15 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 9520 8706 40 CHINAMOBILE-CN China Mobile Communicati 7545 5723 784 689 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4858 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4213 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3559 1043 66 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3376 1856 96 VNPT-AS-VN VNPT Corp, VN 7552 3362 1331 21 VIETEL-AS-AP Viettel Group, VN 9498 3026 498 252 BBIL-AP BHARTI Airtel Ltd., IN 4766 2537 11253 584 KIXS-AS-KR Korea Telecom, KR 24560 2427 836 445 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 8516 10866 3116 AMAZON-02, US 11492 4503 298 624 CABLEONE, US 7155 4105 284 78 VIASAT-SP-BACKBONE, US 22773 3564 3051 266 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3524 1319 66 SHAW, CA 16625 3128 1557 2352 AKAMAI-AS, US 749 3126 54969 2378 DNIC-AS-00749, US 396982 2662 3593 376 GOOGLE-CLOUD-PLATFORM, US 30036 2499 359 427 MEDIACOM-ENTERPRISE-BUSINESS, US 7018 2458 24006 1558 ATT-INTERNET4, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7301 1706 141 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4073 3398 162 AKAMAI-ASN1, NL 8551 3461 369 34 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2967 2292 912 ROSTELECOM-AS, RU 9009 2655 246 1382 M247, RO 34984 2297 361 606 TELLCOM-AS, TR 6849 1970 307 17 UKRTELNET, UA 58224 1827 946 537 TCI, IR 61317 1646 110 1274 ASDETUK www.heficed.com, US Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11406 3372 594 Uninet S.A. de C.V., MX 10620 3527 506 845 Telmex Colombia S.A., CO 13999 2359 353 627 Mega Cable, S.A. de C.V., MX 11830 2269 369 64 Instituto Costarricense de Electricidad 28573 1318 2323 241 Claro NXT Telecomunicacoes Ltda, BR 3816 1303 773 168 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1302 343 511 Axtel, S.A.B. de C.V., MX 6147 1133 370 22 Telefonica del Peru S.A.A., PE 11664 1102 180 440 Techtel LMDS Comunicaciones Interactiva 26615 1034 2498 45 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1579 393 19 LINKdotNET-AS, EG 24835 1536 533 27 RAYA-AS, EG 36992 1308 1518 281 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1038 67 47 ORANGE-COTE-IVOIRE, CI 36935 917 520 42 Vodafone-, EG 6713 549 1861 34 IAM-AS, MA 15399 532 54 49 WANANCHI-, KE 24757 493 73 5 EthioNet-AS, ET 37342 478 32 1 MOVITEL, MZ Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 11406 3372 594 Uninet S.A. de C.V., MX 9808 9520 8706 40 CHINAMOBILE-CN China Mobile Communicati 16509 8516 10866 3116 AMAZON-02, US 12479 7301 1706 141 UNI2-AS, ES 7545 5723 784 689 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4858 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4503 298 624 CABLEONE, US 18403 4213 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4105 284 78 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9520 9480 CHINAMOBILE-CN China Mobile Communications Grou 12479 7301 7160 UNI2-AS, ES 16509 8516 5400 AMAZON-02, US 7545 5723 5034 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4858 4783 ERX-CERNET-BKB China Education and Research Net 18403 4213 4188 FPT-AS-AP FPT Telecom Company, VN 7155 4105 4027 VIASAT-SP-BACKBONE, US 20940 4073 3911 AKAMAI-ASN1, NL 11492 4503 3879 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 19695 UNALLOCATED 8.20.161.0/24 46887 LIGHTOWER, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW 41.57.124.0/23 Origin: 37442 UNASSIGNED 41.57.124.0/23 Transit: 37204 TELONE, ZW Complete listing at https://thyme.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:103 /12:301 /13:582 /14:1199 /15:2066 /16:13471 /17:8253 /18:13863 /19:25181 /20:44103 /21:51528 /22:110037 /23:98530 /24:555969 /25:745 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6389 7301 UNI2-AS, ES 8151 5339 11406 Uninet S.A. de C.V., MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3415 4503 CABLEONE, US 6327 3334 3524 SHAW, CA 7155 3090 4105 VIASAT-SP-BACKBONE, US 8551 2929 3461 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2630 3564 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2155 2499 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2086 3527 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2186 2:1321 3:206 4:5 5:4541 6:132 7:6 8:1546 9:1 11:172 12:1528 13:387 14:2318 15:306 16:193 17:371 18:453 20:260 21:4 22:188 23:6309 24:2588 25:6 27:2471 29:19 31:2512 32:81 34:22 35:112 36:1969 37:4679 38:4922 39:847 40:151 41:3919 42:2017 43:2327 44:308 45:16571 46:4317 47:375 49:1766 50:1873 51:584 52:1594 54:393 55:873 56:8 57:117 58:1888 59:1103 60:987 61:2535 62:2676 63:1908 64:5664 65:2322 66:5068 67:3058 68:1345 69:4133 70:1205 71:685 72:2989 74:2631 75:1557 76:615 77:2454 78:1824 79:2991 80:2112 81:1798 82:1498 83:1263 84:1529 85:3014 86:757 87:2015 88:1181 89:3747 90:616 91:7750 92:2045 93:2619 94:3619 95:4049 96:1316 97:336 98:1135 99:744 100:91 101:1080 102:2756 103:31521 104:4612 105:505 106:961 107:2577 108:1052 109:4204 110:2114 111:3174 112:2047 113:1799 114:1669 115:1991 116:1900 117:2505 118:2592 119:1989 120:1827 121:1131 122:2604 123:2175 124:1615 125:2507 128:1469 129:1062 130:1013 131:1980 132:816 133:422 134:1819 135:307 136:880 137:948 138:2579 139:1565 140:1259 141:1436 142:1460 143:1502 144:1126 145:344 146:1955 147:1591 148:2434 149:2248 150:883 151:1158 152:1820 153:491 154:4560 155:1419 156:1825 157:1316 158:1090 159:2266 160:2569 161:1549 162:3516 163:1543 164:1626 165:1816 166:1094 167:1714 168:3869 169:952 170:4600 171:899 172:3579 173:2967 174:1075 175:1175 176:3782 177:4642 178:3619 179:2163 180:2440 181:3479 182:3431 183:2075 184:2336 185:20342 186:4817 187:3972 188:4129 189:3695 190:9229 191:1447 192:10924 193:8913 194:7354 195:5178 196:3129 197:2386 198:5971 199:6105 200:8002 201:5939 202:10625 203:10292 204:4562 205:3718 206:4302 207:3456 208:4132 209:4908 210:4451 211:2524 212:4233 213:3633 214:1086 215:59 216:6667 217:2731 218:1293 219:580 220:1998 221:963 222:856 223:2182 End of report

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What is going on with BGP
by Ignas Bagdonas 13 Jun '23

13 Jun '23

This is a brief overview of developments happening in the IETF working groups related to BGP evolution. The view is current as of mid-2023, in the timeframe between IETF meetings 116 and 117, and looking back several years to cover the recently published documents. The overview is given from the perspective of development of the protocol mechanics and recommended operational considerations, and is not directly related to specific implementation aspects of specific platforms – for that you would need to consult your vendors’ documentation. It is not expected that all of the functionality described here will be universally productized, as well as there will be specific deviations and extensions to functionality implemented by different vendors as seen required by the market. This is not an end to end overview of BGP, instead it focuses on specific protocol changes and therefore it is assumed that a reader has a sufficient understanding of foundations of BGP and its supporting machinery. It is a high level overview and does not go deep into the specifics, pointers to documents are provided for further and more detailed view into the topics under the discussion. This part covers the core protocol part and mechanisms specific to IPv4 unicast and IPv6 unicast AFs. Deprecation of AS path aggregation sets (draft-ietf-idr-deprecate-as-set-confed-set). When aggregating multiple prefixes with different ASNs into a shorter covering prefix, besides other aggregation related path attributes, the ASN identifiers of component prefixes are contained in an unordered structure which has a different type than the ordered ASN sequence of the AS path attribute. The need for such a structure is to avoid possible propagation loops due to missing information on which ASNs the update has traversed previously. However such an approach obfuscates the real origin and prefix lengths of component prefixes and as a result is directly incompatible with the developments in global routing security mechanisms. Also it is yet another influencing aspect into possible attribute packing conflicts due to different interpretations of what an unordered set of ASNs in fact means. Therefore aggregation resulting in generation of ASN sets (AS_SET and AS_CONFED_SET segments in AS path attribute) is deprecated and should not be used. Receipt of an update carrying such segments should be treated as a withdraw due to a recoverable error (RFC7606), and no announcements carrying ASN set segments can be advertised. This does not deprecate the aggregation of component prefixes as such, but only the generation of ASN set segments. Both aggregation within an AS and proxy aggregation can be deployed as designed, and the fact of aggregation is indicated by the AGGREGATOR path attribute carrying the ASN and RID of the node that performed the aggregation – same as before, just omitting the addition of ASN set segment. The loop avoidance is ensured by controlling the advertisement of the resulting covering aggregate prefix – it must not be advertised to any of the origins of component prefixes. Overall this is not a new concept, RFC6472 recommended against advertising ASN sets but did not change the behaviour of the receiving side. The amount of ASN sets seen in the global routing system is small enough (such cases do exist, but they are a clear exception or simply a neglect to clean the configuration up) to justify a more strict set of rules that would remove the ambiguity of interpretation of prefix origin. Extended messages (RFC 8654). BGP message size is limited to 4096 octets (PDU size should not be confused with link and packet layer MTU sizes and transport window size), and that might not be enough in some cases. BGP PDUs do not have any mechanism for fragmentation, and therefore a set of path attributes that does not fit into the message cannot be advertised at all. In addition, attribute packing is an efficient way of speeding up the convergence of BGP, and the PDU size limitation puts an upper bound on the balance of how many NLRIs can be advertised together with the path attributes. New address families may carry larger NLRI elements and contain more or larger attributes, and therefore 4K octet limit may be not enough. BGP message encoding allows for a larger size, it is a historical limit that is now being lifted. Extended messages mechanism defines a new capability that needs to be configured and exchanged between the peers and if both sides agree, they can use messages up to 65535 octets for BGP signalling. Open message is excluded for backwards compatibility reasons, and a large keepalive message just does not make practical sense. Update, notification, refresh signalling, and potentially other newly defined messages may use this mechanism for exchanging both larger size objects and larger amounts of objects. Of particular note is the handling of notification message – while the overall size of the message now may be larger, so can be the size of notification data, and it cannot exceed the negotiated total limit of 4096 or 65535 octets. Extended optional parameters (RFC9072). BGP Open message carries capabilities – a set of parameters that are exchanged between peers for finding out common operational modes and their corresponding parameters. The encoding used historically had a single octet length field for both total length of all parameters and for a length of each individual parameter, and therefore practically limited the amount of capabilities and their parameters that can be exchanged. Given the trends in increasing the amount of address families and their configuration parameters, the usability features carrying human readable information such as host names and version information, and supported BGP feature indicators, a mechanism that would allow for a larger capability size is needed. The overall approach of this extension is by defining a new optional parameter having a specific length which acts as an indicator that a new format of container is used for encoding individual optional parameters (BGP capability is a type of optional parameter). No changes are made to the actual optional parameters carried, it is just a container that is larger. This change is unambiguous to a speaker that does not understand the new encoding – it will result in an error indicating a presence of an unsupported optional parameter. This mechanism allows for slightly above 4K octets of usable space for optional open parameters – should be enough for everyone. Dynamic capabilities (draft-ietf-idr-dynamic-cap). Capabilities provide an ability for parametrizing a set of BGP operational parameters during initial session startup. Once negotiated, capabilities and their corresponding parameters stay constant for the duration of the BGP session without any protocol-level ability to adjust it if needed. Dynamic capabilities introduce a two-way capability parameter synchronization mechanism without requiring a session bringdown. This is implemented by means of a new protocol message that carries a list of potentially negotiable capabilities and a request-response type of negotiation between the peers. While this mechanism by itself allows for renegotiation of any BGP capabilities after the initial session establishment, not all of such negotiations would be practical or even technically feasible. Enabling a new address family without bringing down an already established session might be both practical and easy to implement, while disabling an already established address family may result in logical dependency conflicts that would render the remaining address families unusable. Changing already negotiated timer parameters is easy, while enabling functionality such as additional paths may not be technically feasible – those all are implementation dependent aspects and would limit the practical breadth of applicability of dynamic capabilities. Send hold timer (draft-ietf-idr-bgp-sendholdtimer). BGP transport session termination results in withdrawal of all received updates – which is a practical way of clearing out the state that has become stale. However, transport session liveness is controlled by the operation of the receive side of the connection – a timeout in receiving of any message from the remote peer is treated as transport failure. It is not the case for the transmit side of the connection though, and a scenario where a remote peer happily sends out periodic keepalives but fails to process any incoming messages from the local peer would result in keeping the potentially stale received information on a local peer. The concept of a send hold timer tracks the local transport endpoint activity on the transmit side and if no locally generated messages can be sent for a timer interval, local peer will initiate a session teardown and clear out all the state received from the remote peer. Optimal route reflection (RFC 9107). Reflectors represent a universally used mechanism for reducing the amount of state to be transferred throughout the AS, their usage patterns are well understood, as well as some limitations. This proposal addresses one of them – the path selection as performed by the reflector is not necessarily an optimal one if that same selection were to be performed by the reflector client itself. If BGP and forwarding topologies are not congruent (which is the case in many reflector deployments), the path selection will be influenced by the metrics relevant and observed by the reflector itself and not by the reflector client. Given that the number of paths to be selected from is limited by a reflector, a client has no means for choosing what would have been a more optimal path from its own perspective. From the perspective of a reflector the differences would lie in the per-client path selection (which may be different due to different policies being used for different clients), and interpretation of IGP metric from the perspective of a particular client and not of a reflector itself. There are no changes required to be performed on the client side for this mechanism to work, while a reflector would need to have a more detailed visibility into the IGP topology for deriving a proper next hop cost for a prefix from a perspective of a reflector client. In addition a path selection process on a reflector would need to be performed individually per client or per group of clients sharing the same reflection policy. Wide BGP communities (draft-ietf-idr-wide-bgp-communities). Standard communities, extended communities, large communities – haven’t we got enough of different flavours of communities for expressing the policy constructs? It appears that we in fact haven’t. The limiting factor appears to be the ability to express actions and parameters for those actions in a reasonably scalable and extensible way. Standard and large communities form a functionally equivalent pair, with large communities primarily addressing the 32 bit ASN clean signalling; extended communities mostly deal with address families other than global unicast and also lack sufficient flexibility for carrying information elements that have semantic interpretation differing from a single plain 32 bit field. The underlying base for wide communities is a new BGP path attribute that acts as a container for community sub-objects, and wide communities are the first actual user of this container infrastructure. Container attribute itself is optional transitive, and individual sub-objects may have a finer level of transitivity control, thus allowing for more controllable attribute propagation. The overall format of wide communities is <Community>:<Source ASN>:<Target ASN>:<variable length parameters>, with Community being the actual community value, Source ASN indicating the AS that is originating this community, Target ASN indicating the AS that is supposed to interpret and react on the community, and then followed by a variable length and format set of parameters that are interpreted in the context of a community and target ASN namespaces. Wide communities also define a parameterized matching mechanism for indicating whether the community should or should not be acted upon based on a set of criteria matching or not matching upon the specific parameters. The actual parameters used for wide community policy include ASN lists, IPv4 and IPv6 prefix lists, uint32 and IEEE 754 fp32 number lists, neighbour class list, an UTF-8 string, and also a user-defined binary object having a free interpretation. Extended admin shutdown communication (RFC 9003). RFC8302 defined a mechanism for sending a human-readable message for several Notification Cease subcodes, for a form of “in-band” message channel for BGP session shutdown. The initial message length of 128 octets appears to be too limited in the context of multibyte encodings, therefore this extension lifts the limitation to 255 octets (but not necessarily characters!). The message must be carried in a valid UTF-8 encoding, and it is not for the receiving router to try to make sense of it – it is to be presented to the operator as is. Cease notification due to BFD session going down (RFC9384). BFD is a universally deployed mechanism for tracking data plane liveness, and BFD session state can also be propagated into control plane protocols for speeding up their reaction to data plane failures. BGP is not an exception to this mechanism, and it just works. When a BGP session goes down for some reason, peer sends out a Cease message that provides some information on the reason why the session is going down. This extension defines a subcode indicating that the session was brought down due to the underlying BFD session going down too. It may well be the case that a remote peer will not be able to receive this notification, but the local peer will contain an indication that the session was brought down due to BFD failure. BGP graceful restart for notification messages (RFC 8538). BGP graceful restart (RFC4724) allows for retaining the forwarding state while the actual BGP session is restarting – except for when the session was brought down due to a notification. Having an ability to retain the state in case of protocol errors that are recoverable in some way appears to be of value for maintaining the stability and reducing the amount of state that needs to be propagated around. The core of this extension is exactly this – for some error scenarios GR retains the forwarding state while BGP sessions recover after the error that resulted in notification being sent. Not all errors can be treated this way – only those that are of a temporary nature, such as a remote peer running out of resources or transport having intermittent problems. Long-lived BGP graceful restart (draft-ietf-idr-long-lived-gr). BGP graceful restart functionality (RFC4724) has been around for a while and is widely deployed. There is a limit of time for which the stale routing information can be retained by the BGP speaker, and that limit has the upper bound of 4K seconds – for a simple reason that a field used for signalling that value has got 12 bits. While an interval of more than an hour for a remote peer to come back up might seem reasonably long, there are use cases where it would be beneficial to retain a stale routing information for a longer time, and primarily to avoid propagating the withdrawals for the prefixes affected by the GR, at a cost and risk of potential blackholing of a traffic destined to those prefixes. Extending the timer value namespace is trivial, and that is precisely what is done by this specification. Keeping stale routing information for extended periods of time might be a bit more dangerous, therefore prefixes covered by the long lived GR are also marked by a specific community value indicating that they should be treated as a last resort for best path selection and also can be propagated only to peers that also support long lived GR. Peer roles (RFC9234). BGP does not define a semantic relationship between peers – that is just a session over which prefixes can be advertised. What is the relationship of those peers and whether they in fact are allowed to exchange any routes learned from various sources historically was not tied to the actual BGP session and was left to the domain of policy implementation. This extension defines a set of mechanisms for specifying and validating the roles of BGP peers and the prefixes they are allowed to announce. Peers have roles defined based on their type and place in the network (a customer, a provider, a route server, a generic peer among the others) which get exchanged during the session establishment. If roles disagree the session is not allowed to come up in the first place; if roles allow for session to be established then depending on the actual role routes advertised get an additional path attribute that indicates the class of an advertising peer. Quite a similar mechanism for route leak detection can be implemented by using community tagging – and while the overall logic of peer roles is the same, the implementation is different: community needs to be acted upon by the policy, and if the policy is not configured properly or simply does not exist at all then such method will not work at all. A dedicated path attribute can be advertised and acted upon by the implementation not based on a user configurable policy and be active all the time regardless of the policy configuration. Policy can be applied on top of what is allowed in based on the peer roles, but peer roles have priority. This mechanism is implemented as a capability for session establishment with a set of role pairs that are allowed, and also as an additional path attribute that gets added to advertised routes and can be acted upon by the policy of the receiving peer. Well-known large communities (draft-heitz-idr-wklc). Large communities enjoy a wide deployment, and that same wide deployment starts to bring in some requirements for an additional functionality, specifically limiting propagation scope and avoiding conflicts in assigning function identifiers. Large communities are a direct replacement of standard BGP communities and as a result they do not have any structure of interpretation of the values carried – it is just an AS number in the Global Administrator field. The proposal is to reserve a set of ASNs for the purpose of being used as well-known large community identifiers and also for control of propagation scope, leaving a total of 10 octets for use within a context of a particular WKLC. This appears to be quite controversial, both on the aspect of reserving a significant portion of 32 bit ASN space, and also trying to control the propagation of a transitive path attribute based on a value of that same attribute. However, the functionality appears to be needed, and it might be a right time to restart a discussion on defining an equivalent of extended communities for 32 bit ASN clean operation. AS path prepending (draft-ietf-grow-as-path-prepending). More does not necessarily mean better. AS path prepending as a policy mechanism to influence path selection is well known and is universally deployed. Increasing the length of AS path by prepending ASN more than once decreases the probability of such path being selected as best. The whole question is how much to prepend in order to achieve the intended depreference of a path, especially in the conditions of everyone else effectively doing the same, and not to become too vulnerable to intentionally crafted shorter AS paths. It is not uncommon to see paths with multiples of tens of prepends in the global routing table – that is not surprising as AS path is a transitive attribute and it is strictly not allowed to remove ASNs from the received path. This can lead to a situation when any other – including intentionally crafted – AS path is seen as more preferred due to having a shorter length, and prepending yet more times only makes such types of attacks easier. Signalling of the policy intent to the remote peers is recommended to be implemented via specifically allocated communities or other path attributes, and prepending should be used only when there are no other alternatives available. Maximum prefix limits (draft-sas-idr-maxprefix-inbound, draft-sas-idr-maxprefix-outbound). The number of prefixes received by the peer and advertised to other peers depends on the role and the place in the network of a particular BGP speaker. Generally those numbers are quite specifically bounded – a leaf site is not supposed to advertise a full global table, and a peer in the exchange should not advertise substantially larger amounts or prefixes than what it originates. A counter based mechanism for controlling the number of received prefixes is supported by virtually all BGP implementations. There are some deficiencies though – it may be that the large amount of prefixes received from the remote peer will be rejected by the inbound policy, and while keeping such rejected prefixes is a handy optimization for speeding up the convergence in case of inbound policy changes, the storage and processing of such rejected prefixes does not come for free. In addition, refresh signalling could be used for requesting only a specific set of prefixes to be readvertised if needed. Another aspect is the number of prefixes accepted by the inbound policy – for various reasons, including operator errors, the number of such prefixes may end up being larger than it should be. On the sending side, there is also a need for a mechanism to limit the number of prefixes past the outbound policy that will get advertised to a remote peer. This results in three separate counters – inbound pre-policy, inbound post-policy, and outbound post-policy - that together can control the tolerable amount of prefixes at various points of the BGP speaker processing. A twin set of documents defines a recommended session shutdown and notification of the remote side with an appropriate cease error to indicate the specific reason. BMP support for local RIB monitoring (draft-ietf-grow-bmp-local-rib). BMP provides a view into input and output BGP RIBs but lacks a mechanism to transport all local RIB routes (all local routes meaning the full view of the local RIB after the path selection process, not only the routes imported into BGP context from other sources). Portions of such view can be derived from the information available via input RIB monitoring (likely requiring a coordinated monitoring of multiple nodes), however that may result in a notable amount of data to be filtered through, would require access to entities and state outside of BGP context, and still may lack to provide a specific sequence of events that happened during topology convergence. A dedicated mechanism for exporting information about all the prefixes contained in the local RIB is defined by means of a new type of BMP peer logically representing the contents of a local RIB. From the perspective of BMP protocol processing there are no logical changes to the usual operation of BMP route monitoring functionality – local RIB routes would be represented as being received from an emulated peer bound to a specific instance of a local RIB on a node. More BMP TLVs (draft-ietf-grow-bmp-tlv). This is a framework document for defining an extensibility mechanism for BMP route monitoring messages in order to be able to carry additional and structured information within BMP. Initially BMP defined a fixed packet format for route monitoring messages, and deployment experience and evolving uses of BMP have indicated a need to convey additional information elements that were not thought of at the initial design time of BMP or may be specific to a particular implementation. BMP has a TLV based encoding mechanism from the start for most of its messages, but not for route monitoring. Therefore this simple extension mechanism allows for a TLV based encoding to be used for all BMP messages. Autonomous System Provider Authorization (draft-ietf-sidrops-aspa-profile, draft-ietf-sidrops-aspa-verification). Origin validation provides a practical and reasonable level of verification of origination of prefixes, but the propagation path of those prefixes once originated is difficult to validate and protect from both unintended errors and malicious attacks. The tree-like nature of BGP peerings may be used for building sets of adjacency lists, treating one AS as a customer, and its peers as providers. This provides a 1:n relationship between a particular AS and its peers, and a distributed collection of such relationships forms a foundation for AS path validation in terms of checking whether adjacent pairs of AS numbers in fact have a customer-provider relationship. ASPA object is yet another object type in the RPKI infrastructure, and therefore existing mechanisms of RPKI used for origin validation would require only modest extensions in order to distribute path validation information. The validation outcome from the perspective of routing policy would result in already familiar states of “valid”, “invalid”, and “unknown” related to AS path attributes contained in received announcements. RTR extensions (draft-ietf-sidrops-8210bis). RTR is a protocol used between a router and a cache for distribution of RPKI data objects. ASPA brings in a requirement for distributing AS path attestation objects to routers, and it is a simple extension to RTR for carrying yet another object type – and this set of extensions defines RTR protocol version 2. The overall protocol mechanics is equivalent to the lower versions (version 0 is specified in RFC6810, and version 1 is specified in RFC8210), and is based on the concept of a router controlling the pull in of the validation information instead of a cache pushing it out towards the router. Operation starts with a maximum supported version and can negotiate a lower backwards compatible protocol version if required during the session startup, and stays at the negotiated version for a lifetime of a session. Deployment experience has also identified several synchronization corner cases in the cache content transfer in the presence of dynamic changes of that content. ROAs for longer prefixes should be advertised before ROAs for corresponding shorter covering prefixes, and multiple ROAs for the same prefix should be advertised consecutively.

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