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, 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 27 Aug, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 368931 Prefixes after maximum aggregation: 167074 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 182937 Total ASes present in the Internet Routing Table: 38620 Prefixes per ASN: 9.55 Origin-only ASes present in the Internet Routing Table: 32036 Origin ASes announcing only one prefix: 15383 Transit ASes present in the Internet Routing Table: 5228 Transit-only ASes present in the Internet Routing Table: 145 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 34 Max AS path prepend of ASN (22394) 31 Prefixes from unregistered ASNs in the Routing Table: 1164 Unregistered ASNs in the Routing Table: 661 Number of 32-bit ASNs allocated by the RIRs: 1679 Number of 32-bit ASNs visible in the Routing Table: 1356 Prefixes from 32-bit ASNs in the Routing Table: 3121 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 110 Number of addresses announced to Internet: 2471627360 Equivalent to 147 /8s, 82 /16s and 10 /24s Percentage of available address space announced: 66.7 Percentage of allocated address space announced: 66.7 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 91.2 Total number of prefixes smaller than registry allocations: 153708 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 92897 Total APNIC prefixes after maximum aggregation: 30576 APNIC Deaggregation factor: 3.04 Prefixes being announced from the APNIC address blocks: 89398 Unique aggregates announced from the APNIC address blocks: 37839 APNIC Region origin ASes present in the Internet Routing Table: 4549 APNIC Prefixes per ASN: 19.65 APNIC Region origin ASes announcing only one prefix: 1254 APNIC Region transit ASes present in the Internet Routing Table: 714 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 18 Number of APNIC region 32-bit ASNs visible in the Routing Table: 75 Number of APNIC addresses announced to Internet: 625593632 Equivalent to 37 /8s, 73 /16s and 205 /24s Percentage of available APNIC address space announced: 79.3 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: 142685 Total ARIN prefixes after maximum aggregation: 73434 ARIN Deaggregation factor: 1.94 Prefixes being announced from the ARIN address blocks: 114619 Unique aggregates announced from the ARIN address blocks: 47132 ARIN Region origin ASes present in the Internet Routing Table: 14615 ARIN Prefixes per ASN: 7.84 ARIN Region origin ASes announcing only one prefix: 5614 ARIN Region transit ASes present in the Internet Routing Table: 1545 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 34 Number of ARIN region 32-bit ASNs visible in the Routing Table: 12 Number of ARIN addresses announced to Internet: 803940128 Equivalent to 47 /8s, 235 /16s and 39 /24s Percentage of available ARIN address space announced: 63.9 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: 87756 Total RIPE prefixes after maximum aggregation: 49836 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 80901 Unique aggregates announced from the RIPE address blocks: 53610 RIPE Region origin ASes present in the Internet Routing Table: 15920 RIPE Prefixes per ASN: 5.08 RIPE Region origin ASes announcing only one prefix: 7922 RIPE Region transit ASes present in the Internet Routing Table: 2510 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 967 Number of RIPE addresses announced to Internet: 488260864 Equivalent to 29 /8s, 26 /16s and 69 /24s Percentage of available RIPE address space announced: 78.7 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: 34135 Total LACNIC prefixes after maximum aggregation: 7718 LACNIC Deaggregation factor: 4.42 Prefixes being announced from the LACNIC address blocks: 33388 Unique aggregates announced from the LACNIC address blocks: 17451 LACNIC Region origin ASes present in the Internet Routing Table: 1507 LACNIC Prefixes per ASN: 22.16 LACNIC Region origin ASes announcing only one prefix: 443 LACNIC Region transit ASes present in the Internet Routing Table: 278 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 19 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 298 Number of LACNIC addresses announced to Internet: 87851136 Equivalent to 5 /8s, 60 /16s and 128 /24s Percentage of available LACNIC address space announced: 58.2 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: 8161 Total AfriNIC prefixes after maximum aggregation: 2047 AfriNIC Deaggregation factor: 3.99 Prefixes being announced from the AfriNIC address blocks: 6264 Unique aggregates announced from the AfriNIC address blocks: 2070 AfriNIC Region origin ASes present in the Internet Routing Table: 479 AfriNIC Prefixes per ASN: 13.08 AfriNIC Region origin ASes announcing only one prefix: 150 AfriNIC Region transit ASes present in the Internet Routing Table: 103 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 25 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4 Number of AfriNIC addresses announced to Internet: 26705664 Equivalent to 1 /8s, 151 /16s and 127 /24s Percentage of available AfriNIC address space announced: 39.8 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 2506 11047 952 Korea Telecom (KIX) 17974 1995 516 31 PT TELEKOMUNIKASI INDONESIA 7545 1575 301 84 TPG Internet Pty Ltd 4755 1537 635 168 TATA Communications formerly 7552 1416 1064 7 Vietel Corporation 24560 1198 336 189 Bharti Airtel Ltd., Telemedia 9829 1153 989 28 BSNL National Internet Backbo 9583 1076 79 496 Sify Limited 4808 1059 2094 305 CNCGROUP IP network: China169 17488 1020 192 147 Hathway IP Over Cable Interne 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 3580 3817 226 bellsouth.net, inc. 18566 1912 364 240 Covad Communications 1785 1821 680 122 PaeTec Communications, Inc. 4323 1613 1085 395 Time Warner Telecom 20115 1588 1538 632 Charter Communications 7029 1580 995 230 Windstream Communications Inc 22773 1442 2903 97 Cox Communications, Inc. 19262 1405 4778 395 Verizon Global Networks 7018 1349 7051 881 AT&T WorldNet Services 2386 1225 515 885 AT&T Data Communications Serv 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 34984 541 107 182 BILISIM TELEKOM 6830 522 1810 321 UPC Distribution Services 20940 490 146 381 Akamai Technologies European 3292 469 2080 404 TDC Tele Danmark 8866 458 133 26 Bulgarian Telecommunication C 12479 457 593 7 Uni2 Autonomous System 3320 425 8151 371 Deutsche Telekom AG 29049 424 31 55 AzerSat LLC. 8551 404 354 44 Bezeq International 3301 399 1855 348 TeliaNet Sweden 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 1622 297 155 TVCABLE BOGOTA 8151 1407 2792 350 UniNet S.A. de C.V. 28573 1271 996 67 NET Servicos de Comunicao S.A 7303 1059 578 173 Telecom Argentina Stet-France 14420 711 56 87 CORPORACION NACIONAL DE TELEC 6503 591 450 68 AVANTEL, S.A. 22047 578 322 17 VTR PUNTO NET S.A. 27947 559 55 82 Telconet S.A 7738 515 986 31 Telecomunicacoes da Bahia S.A 11172 509 85 89 Servicios Alestra S.A de C.V 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 24863 808 145 59 LINKdotNET AS number 8452 530 445 11 TEDATA 15475 512 74 8 Nile Online 36992 300 415 14 Etisalat MISR 3741 265 937 226 The Internet Solution 6713 229 503 17 Itissalat Al-MAGHRIB 15706 219 32 6 Sudatel Internet Exchange Aut 33776 196 12 22 Starcomms Nigeria Limited 12258 194 28 61 Vodacom Internet Company 24835 176 70 11 RAYA Telecom - Egypt 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 3580 3817 226 bellsouth.net, inc. 23456 3121 743 1687 32-bit ASN transition 4766 2506 11047 952 Korea Telecom (KIX) 17974 1995 516 31 PT TELEKOMUNIKASI INDONESIA 18566 1912 364 240 Covad Communications 1785 1821 680 122 PaeTec Communications, Inc. 10620 1622 297 155 TVCABLE BOGOTA 4323 1613 1085 395 Time Warner Telecom 20115 1588 1538 632 Charter Communications 7029 1580 995 230 Windstream Communications Inc Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 17974 1995 1964 PT TELEKOMUNIKASI INDONESIA 1785 1821 1699 PaeTec Communications, Inc. 18566 1912 1672 Covad Communications 4766 2506 1554 Korea Telecom (KIX) 7545 1575 1491 TPG Internet Pty Ltd 10620 1622 1467 TVCABLE BOGOTA 23456 3121 1434 32-bit ASN transition 7552 1416 1409 Vietel Corporation 4755 1537 1369 TATA Communications formerly 7029 1580 1350 Windstream Communications Inc 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 26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic 26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic 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 Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 24.225.128.0/18 36377 Comcast Telecommunications, I 24.225.192.0/23 36377 Comcast Telecommunications, I 24.225.192.0/18 36377 Comcast Telecommunications, I 24.225.224.0/21 36377 Comcast Telecommunications, I 24.225.237.0/24 36377 Comcast Telecommunications, I 24.225.248.0/21 36377 Comcast Telecommunications, I 41.222.79.0/24 36938 >>UNKNOWN<< 41.223.92.0/22 36936 >>UNKNOWN<< 62.61.220.0/24 24974 Tachyon Europe BV - Wireless 62.61.221.0/24 24974 Tachyon Europe BV - Wireless 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 /10:27 /11:81 /12:233 /13:461 /14:796 /15:1413 /16:11945 /17:5943 /18:9960 /19:19583 /20:26662 /21:26700 /22:35757 /23:34404 /24:191586 /25:1115 /26:1320 /27:746 /28:159 /29:4 /30:0 /31:0 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2213 3580 bellsouth.net, inc. 18566 1868 1912 Covad Communications 23456 1532 3121 32-bit ASN transition 10620 1517 1622 TVCABLE BOGOTA 7029 1280 1580 Windstream Communications Inc 11492 1108 1154 Cable One 7011 1061 1186 Citizens Utilities 1785 1053 1821 PaeTec Communications, Inc. 22773 936 1442 Cox Communications, Inc. 30036 925 953 Mediacom Communications Corp Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:361 2:43 4:15 5:1 6:3 8:344 12:1959 13:1 14:521 15:13 16:3 17:5 20:10 23:31 24:1677 27:913 31:514 32:64 33:4 34:2 36:4 38:734 40:107 41:2367 42:50 44:3 46:1076 47:3 49:217 50:416 52:13 54:2 55:6 56:2 57:35 58:860 59:500 60:376 61:1170 62:1088 63:1931 64:4004 65:2306 66:3920 67:1924 68:1101 69:3125 70:779 71:373 72:1842 74:2439 75:330 76:339 77:865 78:708 79:472 80:1118 81:828 82:495 83:473 84:683 85:1078 86:494 87:849 88:337 89:1537 90:224 91:4054 92:525 93:1136 94:1347 95:878 96:418 97:267 98:927 99:37 101:79 103:240 106:79 107:37 108:75 109:1013 110:636 111:734 112:315 113:415 114:555 115:702 116:995 117:682 118:882 119:1197 120:331 121:688 122:1616 123:988 124:1319 125:1328 128:245 129:178 130:166 131:579 132:119 133:21 134:213 135:54 136:213 137:136 138:293 139:116 140:488 141:281 142:387 143:420 144:487 145:61 146:460 147:245 148:638 149:251 150:155 151:190 152:441 153:179 154:5 155:401 156:202 157:351 158:140 159:457 160:318 161:207 162:334 163:166 164:514 165:366 166:537 167:434 168:745 169:151 170:848 171:82 172:1 173:1647 174:628 175:395 176:155 177:241 178:1009 180:1004 181:25 182:600 183:242 184:339 185:1 186:1386 187:690 188:936 189:873 190:5123 192:5921 193:4985 194:3506 195:3045 196:1236 197:143 198:3580 199:4070 200:5502 201:1515 202:8402 203:8471 204:4254 205:2333 206:2668 207:2825 208:4008 209:3434 210:2705 211:1456 212:2083 213:1761 214:778 215:76 216:4831 217:1610 218:551 219:352 220:1220 221:514 222:352 223:248 End of report