This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG, TRNOG, CaribNOG and the RIPE Routing Working Group. Daily listings are sent to bgp-stats@lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz@gmail.com>. Routing Table Report 04:00 +10GMT Sat 21 Apr, 2012 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 406332 Prefixes after maximum aggregation: 172729 Deaggregation factor: 2.35 Unique aggregates announced to Internet: 197504 Total ASes present in the Internet Routing Table: 40749 Prefixes per ASN: 9.97 Origin-only ASes present in the Internet Routing Table: 33074 Origin ASes announcing only one prefix: 15626 Transit ASes present in the Internet Routing Table: 5448 Transit-only ASes present in the Internet Routing Table: 136 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 64 Max AS path prepend of ASN ( 9902) 56 Prefixes from unregistered ASNs in the Routing Table: 391 Unregistered ASNs in the Routing Table: 128 Number of 32-bit ASNs allocated by the RIRs: 2611 Number of 32-bit ASNs visible in the Routing Table: 2227 Prefixes from 32-bit ASNs in the Routing Table: 5570 Special use prefixes present in the Routing Table: 2 Prefixes being announced from unallocated address space: 119 Number of addresses announced to Internet: 2538235344 Equivalent to 151 /8s, 74 /16s and 101 /24s Percentage of available address space announced: 68.5 Percentage of allocated address space announced: 68.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 92.4 Total number of prefixes smaller than registry allocations: 173084 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 99600 Total APNIC prefixes after maximum aggregation: 32224 APNIC Deaggregation factor: 3.09 Prefixes being announced from the APNIC address blocks: 96078 Unique aggregates announced from the APNIC address blocks: 39691 APNIC Region origin ASes present in the Internet Routing Table: 4681 APNIC Prefixes per ASN: 20.53 APNIC Region origin ASes announcing only one prefix: 1238 APNIC Region transit ASes present in the Internet Routing Table: 729 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 20 Number of APNIC region 32-bit ASNs visible in the Routing Table: 185 Number of APNIC addresses announced to Internet: 644102752 Equivalent to 38 /8s, 100 /16s and 58 /24s Percentage of available APNIC address space announced: 81.7 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 131072-132095, 132096-133119 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, 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: 149874 Total ARIN prefixes after maximum aggregation: 76295 ARIN Deaggregation factor: 1.96 Prefixes being announced from the ARIN address blocks: 121117 Unique aggregates announced from the ARIN address blocks: 50365 ARIN Region origin ASes present in the Internet Routing Table: 15044 ARIN Prefixes per ASN: 8.05 ARIN Region origin ASes announcing only one prefix: 5734 ARIN Region transit ASes present in the Internet Routing Table: 1585 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 29 Number of ARIN region 32-bit ASNs visible in the Routing Table: 17 Number of ARIN addresses announced to Internet: 807297728 Equivalent to 48 /8s, 30 /16s and 98 /24s Percentage of available ARIN address space announced: 64.2 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, 393216-394239 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, 45/8, 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, 173/8, 174/8, 184/8, 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: 101440 Total RIPE prefixes after maximum aggregation: 53739 RIPE Deaggregation factor: 1.89 Prefixes being announced from the RIPE address blocks: 93359 Unique aggregates announced from the RIPE address blocks: 58202 RIPE Region origin ASes present in the Internet Routing Table: 16502 RIPE Prefixes per ASN: 5.66 RIPE Region origin ASes announcing only one prefix: 8044 RIPE Region transit ASes present in the Internet Routing Table: 2626 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1495 Number of RIPE addresses announced to Internet: 509709960 Equivalent to 30 /8s, 97 /16s and 142 /24s Percentage of available RIPE address space announced: 82.1 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 196608-198655 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, 176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 40646 Total LACNIC prefixes after maximum aggregation: 8266 LACNIC Deaggregation factor: 4.92 Prefixes being announced from the LACNIC address blocks: 40505 Unique aggregates announced from the LACNIC address blocks: 20214 LACNIC Region origin ASes present in the Internet Routing Table: 1586 LACNIC Prefixes per ASN: 25.54 LACNIC Region origin ASes announcing only one prefix: 441 LACNIC Region transit ASes present in the Internet Routing Table: 299 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 24 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 525 Number of LACNIC addresses announced to Internet: 99324808 Equivalent to 5 /8s, 235 /16s and 147 /24s Percentage of available LACNIC address space announced: 65.8 LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 262144-263167 plus ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 9028 Total AfriNIC prefixes after maximum aggregation: 2137 AfriNIC Deaggregation factor: 4.22 Prefixes being announced from the AfriNIC address blocks: 7079 Unique aggregates announced from the AfriNIC address blocks: 2166 AfriNIC Region origin ASes present in the Internet Routing Table: 534 AfriNIC Prefixes per ASN: 13.26 AfriNIC Region origin ASes announcing only one prefix: 169 AfriNIC Region transit ASes present in the Internet Routing Table: 116 Average AfriNIC Region AS path length visible: 4.4 Max AfriNIC Region AS path length visible: 25 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 31771648 Equivalent to 1 /8s, 228 /16s and 204 /24s Percentage of available AfriNIC address space announced: 47.3 AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4766 2497 11113 1012 Korea Telecom (KIX) 17974 1799 503 63 PT TELEKOMUNIKASI INDONESIA 7545 1677 301 88 TPG Internet Pty Ltd 4755 1587 388 166 TATA Communications formerly 9829 1249 1069 30 BSNL National Internet Backbo 9583 1227 94 528 Sify Limited 7552 1170 1062 11 Vietel Corporation 4808 1105 2049 318 CNCGROUP IP network: China169 24560 1024 385 167 Bharti Airtel Ltd., Telemedia 9498 947 291 64 BHARTI Airtel Ltd. Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 3427 3807 195 bellsouth.net, inc. 7029 3369 985 157 Windstream Communications Inc 18566 2091 382 179 Covad Communications 1785 1903 680 130 PaeTec Communications, Inc. 20115 1640 1566 619 Charter Communications 4323 1601 1044 381 Time Warner Telecom 22773 1576 2910 111 Cox Communications, Inc. 30036 1412 258 763 Mediacom Communications Corp 7018 1260 9775 819 AT&T WorldNet Services 11492 1186 216 364 Cable One Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8402 1745 544 16 Corbina telecom 2118 1304 97 14 EUnet/RELCOM Autonomous Syste 31148 680 37 9 FreeNet ISP 34984 679 188 175 BILISIM TELEKOM 6830 657 2215 426 UPC Distribution Services 20940 649 206 501 Akamai Technologies European 12479 647 666 63 Uni2 Autonomous System 8551 572 360 81 Bezeq International 3320 533 8442 399 Deutsche Telekom AG 2578 501 33 7 Demos, Moscow, Russia Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 10620 1810 327 176 TVCABLE BOGOTA 28573 1781 1107 59 NET Servicos de Comunicao S.A 6503 1533 418 65 AVANTEL, S.A. 8151 1490 3018 350 UniNet S.A. de C.V. 7303 1362 829 191 Telecom Argentina Stet-France 26615 902 697 32 Tim Brasil S.A. 27947 683 74 98 Telconet S.A 11172 637 91 73 Servicios Alestra S.A de C.V 22047 582 326 15 VTR PUNTO NET S.A. 3816 572 242 100 Empresa Nacional de Telecomun Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 8452 1314 958 13 TEDATA 24863 840 274 35 LINKdotNET AS number 6713 490 649 18 Itissalat Al-MAGHRIB 3741 265 921 223 The Internet Solution 12258 197 28 62 Vodacom Internet Company 24835 180 80 8 RAYA Telecom - Egypt 16637 171 666 83 MTN Network Solutions 33776 171 11 21 Starcomms Nigeria Limited 15706 169 32 6 Sudatel Internet Exchange Aut 29571 159 15 15 Ci Telecom Autonomous system Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 3427 3807 195 bellsouth.net, inc. 7029 3369 985 157 Windstream Communications Inc 4766 2497 11113 1012 Korea Telecom (KIX) 18566 2091 382 179 Covad Communications 1785 1903 680 130 PaeTec Communications, Inc. 10620 1810 327 176 TVCABLE BOGOTA 17974 1799 503 63 PT TELEKOMUNIKASI INDONESIA 28573 1781 1107 59 NET Servicos de Comunicao S.A 8402 1745 544 16 Corbina telecom 7545 1677 301 88 TPG Internet Pty Ltd Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 7029 3369 3212 Windstream Communications Inc 18566 2091 1912 Covad Communications 1785 1903 1773 PaeTec Communications, Inc. 17974 1799 1736 PT TELEKOMUNIKASI INDONESIA 8402 1745 1729 Corbina telecom 28573 1781 1722 NET Servicos de Comunicao S.A 10620 1810 1634 TVCABLE BOGOTA 7545 1677 1589 TPG Internet Pty Ltd 4766 2497 1485 Korea Telecom (KIX) 6503 1533 1468 AVANTEL, S.A. Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic 32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom 32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom 25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic 13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic 23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic 17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic 17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies, 16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic 32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser Complete listing at http://thyme.rand.apnic.net/current/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 128.0.0.0/21 12654 RIPE NCC RIS Project 128.0.24.0/24 12654 RIPE NCC RIS Project Complete listing at http://thyme.rand.apnic.net/current/data-dsua Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.192.0.0/22 45464 Room 201, TGU Bldg 14.192.4.0/22 45464 Room 201, TGU Bldg 14.192.8.0/22 45464 Room 201, TGU Bldg 14.192.12.0/22 45464 Room 201, TGU Bldg 14.192.16.0/22 45464 Room 201, TGU Bldg 14.192.20.0/22 45464 Room 201, TGU Bldg 14.192.24.0/22 45464 Room 201, TGU Bldg 14.192.28.0/22 45464 Room 201, TGU Bldg 27.112.114.0/24 23884 Proimage Engineering and Comm 37.252.112.0/21 35094 Bredbandsfylket Troms AS Complete listing at http://thyme.rand.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 /8:19 /9:12 /10:28 /11:81 /12:235 /13:459 /14:829 /15:1484 /16:12227 /17:6271 /18:10543 /19:20619 /20:28937 /21:29930 /22:40516 /23:37836 /24:212630 /25:1194 /26:1429 /27:786 /28:166 /29:65 /30:17 /31:0 /32:19 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 7029 3027 3369 Windstream Communications Inc 6389 2145 3427 bellsouth.net, inc. 18566 2040 2091 Covad Communications 8402 1722 1745 Corbina telecom 10620 1695 1810 TVCABLE BOGOTA 30036 1358 1412 Mediacom Communications Corp 6503 1291 1533 AVANTEL, S.A. 11492 1149 1186 Cable One 8452 1116 1314 TEDATA 1785 1071 1903 PaeTec Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:538 2:755 4:14 6:3 8:402 12:2007 13:1 14:599 15:12 16:3 17:7 20:22 23:167 24:1770 27:1257 31:981 32:57 33:2 34:2 36:8 37:366 38:798 40:120 41:3164 42:134 44:3 46:1495 47:3 49:371 50:530 52:13 54:8 55:8 56:3 57:31 58:960 59:519 60:281 61:1265 62:981 63:1992 64:4169 65:2251 66:4491 67:2019 68:1167 69:3189 70:902 71:486 72:1819 74:2594 75:494 76:318 77:944 78:1006 79:485 80:1209 81:903 82:667 83:550 84:473 85:1209 86:412 87:922 88:345 89:1625 90:291 91:4737 92:525 93:1352 94:1463 95:1166 96:360 97:316 98:902 99:36 100:7 101:174 103:1007 106:102 107:188 108:235 109:1287 110:756 111:921 112:445 113:597 114:642 115:880 116:908 117:714 118:906 119:1231 120:354 121:798 122:1638 123:1079 124:1352 125:1248 128:546 129:193 130:252 131:591 132:179 133:22 134:242 135:62 136:212 137:176 138:355 139:147 140:491 141:245 142:387 143:400 144:523 145:69 146:494 147:280 148:758 149:295 150:158 151:175 152:464 153:171 154:9 155:435 156:215 157:380 158:174 159:523 160:338 161:262 162:350 163:187 164:571 165:394 166:573 167:466 168:822 169:127 170:858 171:126 172:2 173:1745 174:563 175:433 176:427 177:666 178:1334 180:1180 181:75 182:810 183:288 184:453 185:1 186:2211 187:1041 188:1183 189:1779 190:5507 192:5999 193:5544 194:4646 195:3593 196:1292 197:130 198:3652 199:4521 200:5801 201:1927 202:8520 203:8588 204:4327 205:2494 206:2752 207:2793 208:4055 209:3611 210:2763 211:1475 212:2017 213:1907 214:834 215:104 216:5110 217:1538 218:539 219:344 220:1227 221:556 222:322 223:336 End of report