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 <pfs@cisco.com>. Routing Table Report 04:00 +10GMT Sat 14 May, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 356656 Prefixes after maximum aggregation: 161598 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 176105 Total ASes present in the Internet Routing Table: 37552 Prefixes per ASN: 9.50 Origin-only ASes present in the Internet Routing Table: 31389 Origin ASes announcing only one prefix: 15082 Transit ASes present in the Internet Routing Table: 5092 Transit-only ASes present in the Internet Routing Table: 136 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 36 Max AS path prepend of ASN (48687) 24 Prefixes from unregistered ASNs in the Routing Table: 626 Unregistered ASNs in the Routing Table: 320 Number of 32-bit ASNs allocated by the RIRs: 1348 Number of 32-bit ASNs visible in the Routing Table: 1071 Prefixes from 32-bit ASNs in the Routing Table: 2417 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 156 Number of addresses announced to Internet: 2425507776 Equivalent to 144 /8s, 146 /16s and 79 /24s Percentage of available address space announced: 65.4 Percentage of allocated address space announced: 65.4 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 90.7 Total number of prefixes smaller than registry allocations: 148116 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 89380 Total APNIC prefixes after maximum aggregation: 29933 APNIC Deaggregation factor: 2.99 Prefixes being announced from the APNIC address blocks: 85747 Unique aggregates announced from the APNIC address blocks: 36599 APNIC Region origin ASes present in the Internet Routing Table: 4441 APNIC Prefixes per ASN: 19.31 APNIC Region origin ASes announcing only one prefix: 1232 APNIC Region transit ASes present in the Internet Routing Table: 705 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 18 Number of APNIC region 32-bit ASNs visible in the Routing Table: 47 Number of APNIC addresses announced to Internet: 614205216 Equivalent to 36 /8s, 156 /16s and 7 /24s Percentage of available APNIC address space announced: 77.9 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079 55296-56319, 131072-132095 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: 140013 Total ARIN prefixes after maximum aggregation: 71448 ARIN Deaggregation factor: 1.96 Prefixes being announced from the ARIN address blocks: 112260 Unique aggregates announced from the ARIN address blocks: 45485 ARIN Region origin ASes present in the Internet Routing Table: 14368 ARIN Prefixes per ASN: 7.81 ARIN Region origin ASes announcing only one prefix: 5485 ARIN Region transit ASes present in the Internet Routing Table: 1497 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 12 Number of ARIN addresses announced to Internet: 800054528 Equivalent to 47 /8s, 175 /16s and 221 /24s Percentage of available ARIN address space announced: 63.6 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: 84162 Total RIPE prefixes after maximum aggregation: 48126 RIPE Deaggregation factor: 1.75 Prefixes being announced from the RIPE address blocks: 77641 Unique aggregates announced from the RIPE address blocks: 51249 RIPE Region origin ASes present in the Internet Routing Table: 15589 RIPE Prefixes per ASN: 4.98 RIPE Region origin ASes announcing only one prefix: 7801 RIPE Region transit ASes present in the Internet Routing Table: 2460 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 36 Number of RIPE region 32-bit ASNs visible in the Routing Table: 790 Number of RIPE addresses announced to Internet: 468684800 Equivalent to 27 /8s, 239 /16s and 144 /24s Percentage of available RIPE address space announced: 75.5 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: 32698 Total LACNIC prefixes after maximum aggregation: 7496 LACNIC Deaggregation factor: 4.36 Prefixes being announced from the LACNIC address blocks: 31756 Unique aggregates announced from the LACNIC address blocks: 16683 LACNIC Region origin ASes present in the Internet Routing Table: 1449 LACNIC Prefixes per ASN: 21.92 LACNIC Region origin ASes announcing only one prefix: 427 LACNIC Region transit ASes present in the Internet Routing Table: 268 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 19 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 217 Number of LACNIC addresses announced to Internet: 83360256 Equivalent to 4 /8s, 247 /16s and 250 /24s Percentage of available LACNIC address space announced: 55.2 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: 7770 Total AfriNIC prefixes after maximum aggregation: 1867 AfriNIC Deaggregation factor: 4.16 Prefixes being announced from the AfriNIC address blocks: 6122 Unique aggregates announced from the AfriNIC address blocks: 1939 AfriNIC Region origin ASes present in the Internet Routing Table: 447 AfriNIC Prefixes per ASN: 13.70 AfriNIC Region origin ASes announcing only one prefix: 137 AfriNIC Region transit ASes present in the Internet Routing Table: 97 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 24 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 23095040 Equivalent to 1 /8s, 96 /16s and 103 /24s Percentage of available AfriNIC address space announced: 34.4 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 2452 9493 916 Korea Telecom (KIX) 17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA 7545 1549 301 87 TPG Internet Pty Ltd 4755 1461 634 167 TATA Communications formerly 24560 1151 336 184 Bharti Airtel Ltd., Telemedia 7552 1105 1064 7 Vietel Corporation 9583 1079 80 510 Sify Limited 4808 1063 2130 297 CNCGROUP IP network: China169 9829 1039 874 51 BSNL National Internet Backbo 17488 935 165 103 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 3647 3822 255 bellsouth.net, inc. 4323 1979 1081 396 Time Warner Telecom 18566 1822 357 232 Covad Communications 1785 1775 681 124 PaeTec Communications, Inc. 6478 1678 314 50 AT&T Worldnet Services 20115 1535 1539 631 Charter Communications 19262 1499 4949 299 Verizon Global Networks 7018 1357 6911 886 AT&T WorldNet Services 22773 1329 2897 87 Cox Communications, Inc. 11492 1279 240 15 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 6830 519 1780 321 UPC Distribution Services 34984 512 106 182 BILISIM TELEKOM 3292 459 1998 392 TDC Tele Danmark 20940 447 131 342 Akamai Technologies European 8866 442 134 26 Bulgarian Telecommunication C 29049 442 32 44 AzerSat LLC. 12479 430 577 6 Uni2 Autonomous System 3320 420 7608 367 Deutsche Telekom AG 8551 406 355 45 Bezeq International 702 397 1802 310 UUNET - Commercial IP service 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 1476 272 154 TVCABLE BOGOTA 8151 1370 2702 362 UniNet S.A. de C.V. 28573 1315 990 86 NET Servicos de Comunicao S.A 7303 931 470 152 Telecom Argentina Stet-France 6503 732 354 73 AVANTEL, S.A. 14420 667 54 91 CORPORACION NACIONAL DE TELEC 22047 555 310 15 VTR PUNTO NET S.A. 3816 521 227 100 Empresa Nacional de Telecomun 13489 499 241 121 Orbitel S.A. E.S.P. 11172 493 84 83 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 8452 888 445 11 TEDATA 24863 782 147 37 LINKdotNET AS number 15475 415 90 8 Nile Online 36992 288 331 17 Etisalat MISR 3741 268 985 228 The Internet Solution 6713 241 215 13 Itissalat Al-MAGHRIB 24835 206 78 10 RAYA Telecom - Egypt 33776 200 12 11 Starcomms Nigeria Limited 29571 162 17 11 Ci Telecom Autonomous system 16637 150 441 86 MTN Network Solutions 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 3647 3822 255 bellsouth.net, inc. 4766 2452 9493 916 Korea Telecom (KIX) 23456 2417 685 1317 32-bit ASN transition 4323 1979 1081 396 Time Warner Telecom 17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA 18566 1822 357 232 Covad Communications 1785 1775 681 124 PaeTec Communications, Inc. 6478 1678 314 50 AT&T Worldnet Services 7545 1549 301 87 TPG Internet Pty Ltd 20115 1535 1539 631 Charter Communications 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 1834 1802 PT TELEKOMUNIKASI INDONESIA 1785 1775 1651 PaeTec Communications, Inc. 6478 1678 1628 AT&T Worldnet Services 18566 1822 1590 Covad Communications 4323 1979 1583 Time Warner Telecom 4766 2452 1536 Korea Telecom (KIX) 7545 1549 1462 TPG Internet Pty Ltd 10620 1476 1322 TVCABLE BOGOTA 4755 1461 1294 TATA Communications formerly 11492 1279 1264 Cable One 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 31.134.128.0/18 42668 RIPE Network Coordination Cen 31.220.160.0/19 29072 RDTC Autonomous System ISP at 31.222.96.0/22 29119 ServiHosting Autonomous Syste 31.222.100.0/22 29119 ServiHosting Autonomous Syste 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 /8:20 /9:12 /10:28 /11:78 /12:223 /13:459 /14:790 /15:1390 /16:11723 /17:5766 /18:9707 /19:19307 /20:25552 /21:25796 /22:34071 /23:32878 /24:185607 /25:1092 /26:1271 /27:709 /28:161 /29:8 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2247 3647 bellsouth.net, inc. 18566 1784 1822 Covad Communications 6478 1632 1678 AT&T Worldnet Services 10620 1366 1476 TVCABLE BOGOTA 11492 1225 1279 Cable One 23456 1188 2417 32-bit ASN transition 7011 1062 1162 Citizens Utilities 1785 1050 1775 PaeTec Communications, Inc. 4323 888 1979 Time Warner Telecom 22773 846 1329 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:267 2:44 4:14 5:1 6:3 8:352 12:1985 13:1 14:456 15:15 16:3 17:8 20:10 23:7 24:1639 27:743 31:328 32:60 33:4 34:2 37:1 38:731 40:101 41:2501 42:5 44:3 46:903 47:4 49:177 50:401 52:13 55:6 56:2 57:30 58:848 59:485 60:387 61:1254 62:974 63:1925 64:3928 65:2299 66:4140 67:1866 68:1093 69:2986 70:706 71:350 72:1884 73:1 74:2345 75:306 76:342 77:865 78:689 79:463 80:1096 81:817 82:493 83:449 84:625 85:1071 86:598 87:746 88:325 89:1566 90:202 91:3732 92:512 93:1054 94:1251 95:803 96:483 97:246 98:828 99:35 101:59 103:12 106:1 107:6 108:85 109:944 110:585 111:711 112:319 113:399 114:532 115:666 116:954 117:683 118:818 119:1135 120:309 121:678 122:1621 123:1079 124:1257 125:1223 128:259 129:166 130:165 131:568 132:110 133:19 134:218 135:49 136:214 137:143 138:304 139:106 140:480 141:240 142:401 143:402 144:487 145:53 146:440 147:210 148:591 149:243 150:171 151:187 152:310 153:179 154:3 155:395 156:194 157:352 158:131 159:387 160:315 161:207 162:279 163:163 164:499 165:352 166:514 167:431 168:725 169:153 170:794 171:77 172:1 173:1557 174:543 175:370 177:120 178:908 180:840 181:16 182:439 183:205 184:262 185:1 186:1169 187:749 188:829 189:907 190:4793 192:5783 193:4843 194:3477 195:2973 196:1209 197:17 198:3570 199:3893 200:5535 201:1494 202:8359 203:8467 204:4111 205:2328 206:2725 207:2913 208:3966 209:3423 210:2731 211:1386 212:1973 213:1717 214:730 215:69 216:4818 217:1630 218:565 219:370 220:1203 221:483 222:342 223:145 End of report