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 30 Apr, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 356141 Prefixes after maximum aggregation: 161025 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 175803 Total ASes present in the Internet Routing Table: 37438 Prefixes per ASN: 9.51 Origin-only ASes present in the Internet Routing Table: 31355 Origin ASes announcing only one prefix: 15082 Transit ASes present in the Internet Routing Table: 5058 Transit-only ASes present in the Internet Routing Table: 135 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 36 Max AS path prepend of ASN (36992) 29 Prefixes from unregistered ASNs in the Routing Table: 584 Unregistered ASNs in the Routing Table: 291 Number of 32-bit ASNs allocated by the RIRs: 1317 Number of 32-bit ASNs visible in the Routing Table: 1025 Prefixes from 32-bit ASNs in the Routing Table: 2298 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 148 Number of addresses announced to Internet: 2420666304 Equivalent to 144 /8s, 72 /16s and 111 /24s Percentage of available address space announced: 65.3 Percentage of allocated address space announced: 65.3 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 90.6 Total number of prefixes smaller than registry allocations: 147936 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 89082 Total APNIC prefixes after maximum aggregation: 29925 APNIC Deaggregation factor: 2.98 Prefixes being announced from the APNIC address blocks: 85522 Unique aggregates announced from the APNIC address blocks: 36919 APNIC Region origin ASes present in the Internet Routing Table: 4425 APNIC Prefixes per ASN: 19.33 APNIC Region origin ASes announcing only one prefix: 1232 APNIC Region transit ASes present in the Internet Routing Table: 703 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: 48 Number of APNIC addresses announced to Internet: 611294496 Equivalent to 36 /8s, 111 /16s and 157 /24s Percentage of available APNIC address space announced: 77.5 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: 140235 Total ARIN prefixes after maximum aggregation: 71231 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 112584 Unique aggregates announced from the ARIN address blocks: 45236 ARIN Region origin ASes present in the Internet Routing Table: 14345 ARIN Prefixes per ASN: 7.85 ARIN Region origin ASes announcing only one prefix: 5478 ARIN Region transit ASes present in the Internet Routing Table: 1492 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 11 Number of ARIN addresses announced to Internet: 799837952 Equivalent to 47 /8s, 172 /16s and 143 /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: 84054 Total RIPE prefixes after maximum aggregation: 47941 RIPE Deaggregation factor: 1.75 Prefixes being announced from the RIPE address blocks: 77228 Unique aggregates announced from the RIPE address blocks: 51126 RIPE Region origin ASes present in the Internet Routing Table: 15564 RIPE Prefixes per ASN: 4.96 RIPE Region origin ASes announcing only one prefix: 7810 RIPE Region transit ASes present in the Internet Routing Table: 2440 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: 760 Number of RIPE addresses announced to Internet: 467574528 Equivalent to 27 /8s, 222 /16s and 159 /24s Percentage of available RIPE address space announced: 75.3 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: 32502 Total LACNIC prefixes after maximum aggregation: 7466 LACNIC Deaggregation factor: 4.35 Prefixes being announced from the LACNIC address blocks: 31515 Unique aggregates announced from the LACNIC address blocks: 16536 LACNIC Region origin ASes present in the Internet Routing Table: 1442 LACNIC Prefixes per ASN: 21.86 LACNIC Region origin ASes announcing only one prefix: 427 LACNIC Region transit ASes present in the Internet Routing Table: 261 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: 201 Number of LACNIC addresses announced to Internet: 82907136 Equivalent to 4 /8s, 241 /16s and 16 /24s Percentage of available LACNIC address space announced: 54.9 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: 7748 Total AfriNIC prefixes after maximum aggregation: 1855 AfriNIC Deaggregation factor: 4.18 Prefixes being announced from the AfriNIC address blocks: 6108 Unique aggregates announced from the AfriNIC address blocks: 1916 AfriNIC Region origin ASes present in the Internet Routing Table: 449 AfriNIC Prefixes per ASN: 13.60 AfriNIC Region origin ASes announcing only one prefix: 135 AfriNIC Region transit ASes present in the Internet Routing Table: 97 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 31 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 23373568 Equivalent to 1 /8s, 100 /16s and 167 /24s Percentage of available AfriNIC address space announced: 34.8 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 2434 9482 904 Korea Telecom (KIX) 17974 1827 515 29 PT TELEKOMUNIKASI INDONESIA 7545 1558 301 84 TPG Internet Pty Ltd 4755 1459 634 167 TATA Communications formerly 7552 1214 1064 7 Vietel Corporation 24560 1158 336 190 Bharti Airtel Ltd., Telemedia 9583 1056 77 492 Sify Limited 4808 1035 2090 294 CNCGROUP IP network: China169 9829 1007 870 50 BSNL National Internet Backbo 17488 944 165 100 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 3644 3822 254 bellsouth.net, inc. 4323 2630 1086 397 Time Warner Telecom 1785 1791 681 128 PaeTec Communications, Inc. 18566 1790 349 229 Covad Communications 6478 1658 311 46 AT&T Worldnet Services 20115 1534 1552 641 Charter Communications 19262 1495 4949 298 Verizon Global Networks 7018 1343 6782 886 AT&T WorldNet Services 22773 1300 2865 84 Cox Communications, Inc. 2386 1268 536 911 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 6830 520 1780 322 UPC Distribution Services 34984 509 106 182 BILISIM TELEKOM 3292 457 1997 391 TDC Tele Danmark 29049 450 33 48 AzerSat LLC. 8866 446 134 26 Bulgarian Telecommunication C 20940 442 129 338 Akamai Technologies European 3320 423 7609 368 Deutsche Telekom AG 12479 408 577 6 Uni2 Autonomous System 8551 405 354 47 Bezeq International 702 396 1802 309 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 1448 268 160 TVCABLE BOGOTA 28573 1289 988 87 NET Servicos de Comunicao S.A 8151 1251 2690 369 UniNet S.A. de C.V. 7303 926 467 149 Telecom Argentina Stet-France 6503 852 354 73 AVANTEL, S.A. 14420 665 53 91 CORPORACION NACIONAL DE TELEC 22047 564 310 15 VTR PUNTO NET S.A. 3816 517 226 98 Empresa Nacional de Telecomun 11172 489 99 82 Servicios Alestra S.A de C.V 13489 484 221 116 Orbitel S.A. E.S.P. 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 881 445 11 TEDATA 24863 779 147 39 LINKdotNET AS number 15475 421 90 8 Nile Online 36992 299 415 13 Etisalat MISR 3741 267 985 227 The Internet Solution 6713 240 215 13 Itissalat Al-MAGHRIB 24835 211 78 10 RAYA Telecom - Egypt 33776 208 12 10 Starcomms Nigeria Limited 29571 161 17 11 Ci Telecom Autonomous system 16637 149 441 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 3644 3822 254 bellsouth.net, inc. 4323 2630 1086 397 Time Warner Telecom 4766 2434 9482 904 Korea Telecom (KIX) 23456 2298 658 1255 32-bit ASN transition 17974 1827 515 29 PT TELEKOMUNIKASI INDONESIA 1785 1791 681 128 PaeTec Communications, Inc. 18566 1790 349 229 Covad Communications 6478 1658 311 46 AT&T Worldnet Services 7545 1558 301 84 TPG Internet Pty Ltd 20115 1534 1552 641 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 4323 2630 2233 Time Warner Telecom 17974 1827 1798 PT TELEKOMUNIKASI INDONESIA 1785 1791 1663 PaeTec Communications, Inc. 6478 1658 1612 AT&T Worldnet Services 18566 1790 1561 Covad Communications 4766 2434 1530 Korea Telecom (KIX) 7545 1558 1474 TPG Internet Pty Ltd 4755 1459 1292 TATA Communications formerly 10620 1448 1288 TVCABLE BOGOTA 11492 1261 1246 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 13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic 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 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<< 45.127.0.0/16 13767 NetworkTwo Communications Gro 62.61.220.0/24 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 /8:20 /9:12 /10:28 /11:77 /12:221 /13:459 /14:790 /15:1386 /16:11667 /17:5753 /18:9651 /19:19182 /20:25623 /21:25636 /22:33862 /23:32708 /24:185857 /25:1132 /26:1317 /27:705 /28:39 /29:8 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2245 3644 bellsouth.net, inc. 18566 1758 1790 Covad Communications 6478 1612 1658 AT&T Worldnet Services 10620 1338 1448 TVCABLE BOGOTA 4323 1332 2630 Time Warner Telecom 11492 1210 1261 Cable One 23456 1151 2298 32-bit ASN transition 7011 1062 1161 Citizens Utilities 1785 1059 1791 PaeTec Communications, Inc. 22773 844 1300 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:264 2:51 4:14 5:1 6:3 8:351 12:1987 13:1 14:443 15:15 16:3 17:8 20:9 23:5 24:1613 27:720 31:233 32:60 33:3 34:2 37:1 38:765 40:101 41:2441 42:5 44:3 46:885 47:4 49:171 50:375 52:13 55:5 56:2 57:31 58:840 59:481 60:387 61:1266 62:981 63:1932 64:3956 65:2322 66:4374 67:1868 68:1077 69:2971 70:704 71:346 72:1893 73:1 74:2360 75:298 76:334 77:836 78:678 79:454 80:1092 81:814 82:496 83:461 84:650 85:1080 86:566 87:748 88:322 89:1597 90:183 91:3714 92:512 93:1059 94:1263 95:796 96:478 97:253 98:823 99:35 101:68 103:5 106:1 107:6 108:83 109:941 110:561 111:699 112:320 113:397 114:530 115:685 116:952 117:681 118:809 119:1139 120:306 121:671 122:1623 123:1075 124:1255 125:1220 128:264 129:163 130:172 131:568 132:112 133:19 134:217 135:49 136:214 137:141 138:302 139:106 140:479 141:174 142:400 143:403 144:487 145:52 146:441 147:208 148:591 149:243 150:171 151:187 152:309 153:179 154:3 155:396 156:190 157:353 158:133 159:384 160:314 161:247 162:277 163:164 164:494 165:351 166:511 167:426 168:721 169:153 170:788 171:76 172:1 173:1511 174:535 175:361 177:81 178:851 180:817 181:15 182:436 183:204 184:258 185:1 186:1137 187:810 188:988 189:969 190:4836 192:5789 193:4844 194:3470 195:2974 196:1204 197:16 198:3570 199:3910 200:5522 201:1499 202:8374 203:8448 204:4138 205:2325 206:2749 207:3030 208:3952 209:3472 210:2729 211:1386 212:1968 213:1686 214:736 215:67 216:4879 217:1651 218:563 219:374 220:1202 221:484 222:342 223:145 End of report