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 19 Mar, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 350396 Prefixes after maximum aggregation: 158064 Deaggregation factor: 2.22 Unique aggregates announced to Internet: 173325 Total ASes present in the Internet Routing Table: 36104 Prefixes per ASN: 9.71 Origin-only ASes present in the Internet Routing Table: 31128 Origin ASes announcing only one prefix: 14967 Transit ASes present in the Internet Routing Table: 4976 Transit-only ASes present in the Internet Routing Table: 126 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 31 Max AS path prepend of ASN (36992) 29 Prefixes from unregistered ASNs in the Routing Table: 419 Unregistered ASNs in the Routing Table: 197 Number of 32-bit ASNs allocated by the RIRs: 1207 Prefixes from 32-bit ASNs in the Routing Table: 1 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 195 Number of addresses announced to Internet: 2389006912 Equivalent to 142 /8s, 101 /16s and 90 /24s Percentage of available address space announced: 64.5 Percentage of allocated address space announced: 64.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 89.5 Total number of prefixes smaller than registry allocations: 145036 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 87454 Total APNIC prefixes after maximum aggregation: 29725 APNIC Deaggregation factor: 2.94 Prefixes being announced from the APNIC address blocks: 84332 Unique aggregates announced from the APNIC address blocks: 36512 APNIC Region origin ASes present in the Internet Routing Table: 4355 APNIC Prefixes per ASN: 19.36 APNIC Region origin ASes announcing only one prefix: 1209 APNIC Region transit ASes present in the Internet Routing Table: 688 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 20 Number of APNIC addresses announced to Internet: 599437120 Equivalent to 35 /8s, 186 /16s and 175 /24s Percentage of available APNIC address space announced: 76.0 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: 140255 Total ARIN prefixes after maximum aggregation: 71845 ARIN Deaggregation factor: 1.95 Prefixes being announced from the ARIN address blocks: 110784 Unique aggregates announced from the ARIN address blocks: 45089 ARIN Region origin ASes present in the Internet Routing Table: 14268 ARIN Prefixes per ASN: 7.76 ARIN Region origin ASes announcing only one prefix: 5424 ARIN Region transit ASes present in the Internet Routing Table: 1481 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 23 Number of ARIN addresses announced to Internet: 796960256 Equivalent to 47 /8s, 128 /16s and 166 /24s Percentage of available ARIN address space announced: 63.3 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: 82861 Total RIPE prefixes after maximum aggregation: 47241 RIPE Deaggregation factor: 1.75 Prefixes being announced from the RIPE address blocks: 76228 Unique aggregates announced from the RIPE address blocks: 49953 RIPE Region origin ASes present in the Internet Routing Table: 15431 RIPE Prefixes per ASN: 4.94 RIPE Region origin ASes announcing only one prefix: 7778 RIPE Region transit ASes present in the Internet Routing Table: 2398 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 30 Number of RIPE addresses announced to Internet: 465167872 Equivalent to 27 /8s, 185 /16s and 230 /24s Percentage of available RIPE address space announced: 74.9 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: 32138 Total LACNIC prefixes after maximum aggregation: 7344 LACNIC Deaggregation factor: 4.38 Prefixes being announced from the LACNIC address blocks: 31063 Unique aggregates announced from the LACNIC address blocks: 16158 LACNIC Region origin ASes present in the Internet Routing Table: 1433 LACNIC Prefixes per ASN: 21.68 LACNIC Region origin ASes announcing only one prefix: 428 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: 18 Number of LACNIC addresses announced to Internet: 81506688 Equivalent to 4 /8s, 219 /16s and 177 /24s Percentage of available LACNIC address space announced: 54.0 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: 7476 Total AfriNIC prefixes after maximum aggregation: 1806 AfriNIC Deaggregation factor: 4.14 Prefixes being announced from the AfriNIC address blocks: 5882 Unique aggregates announced from the AfriNIC address blocks: 1800 AfriNIC Region origin ASes present in the Internet Routing Table: 434 AfriNIC Prefixes per ASN: 13.55 AfriNIC Region origin ASes announcing only one prefix: 127 AfriNIC Region transit ASes present in the Internet Routing Table: 93 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 31 Number of AfriNIC addresses announced to Internet: 22062080 Equivalent to 1 /8s, 80 /16s and 164 /24s Percentage of available AfriNIC address space announced: 32.9 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 2426 9508 896 Korea Telecom (KIX) 7545 1569 301 84 TPG Internet Pty Ltd 4755 1476 653 158 TATA Communications formerly 17974 1443 480 34 PT TELEKOMUNIKASI INDONESIA 24560 1134 324 187 Bharti Airtel Ltd., Telemedia 9583 1047 77 490 Sify Limited 4808 1046 2142 294 CNCGROUP IP network: China169 9829 1004 868 53 BSNL National Internet Backbo 18101 939 117 143 Reliance Infocom Ltd Internet 17488 936 162 96 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 3675 3839 259 bellsouth.net, inc. 4323 2569 1093 402 Time Warner Telecom 1785 1792 681 131 PaeTec Communications, Inc. 18566 1606 331 194 Covad Communications 6478 1551 300 76 AT&T Worldnet Services 20115 1527 1536 645 Charter Communications 19262 1488 4939 299 Verizon Global Networks 7018 1368 6835 887 AT&T WorldNet Services 11492 1314 236 64 Cable One 2386 1289 536 929 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 515 1780 318 UPC Distribution Services 9198 472 267 15 Kazakhtelecom Data Network Ad 34984 455 95 203 BILISIM TELEKOM 3292 453 2013 391 TDC Tele Danmark 8866 443 133 24 Bulgarian Telecommunication C 20940 411 98 314 Akamai Technologies European 3320 406 7604 354 Deutsche Telekom AG 8551 403 353 46 Bezeq International 12479 403 577 6 Uni2 Autonomous System 8402 398 320 11 Corbina telecom 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 1392 259 163 TVCABLE BOGOTA 28573 1243 965 82 NET Servicos de Comunicao S.A 8151 1238 2702 368 UniNet S.A. de C.V. 6503 1175 354 73 AVANTEL, S.A. 7303 923 464 147 Telecom Argentina Stet-France 14420 639 52 91 CORPORACION NACIONAL DE TELEC 22047 543 310 15 VTR PUNTO NET S.A. 3816 513 225 97 Empresa Nacional de Telecomun 13489 491 213 106 Orbitel S.A. E.S.P. 11172 487 99 81 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 791 445 11 TEDATA 24863 773 147 39 LINKdotNET AS number 15475 420 90 8 Nile Online 36992 297 271 14 Etisalat MISR 3741 266 987 228 The Internet Solution 33776 230 13 5 Starcomms Nigeria Limited 24835 220 78 10 RAYA Telecom - Egypt 6713 207 199 11 Itissalat Al-MAGHRIB 29571 192 17 11 Ci Telecom Autonomous system 16637 147 439 87 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 3675 3839 259 bellsouth.net, inc. 4323 2569 1093 402 Time Warner Telecom 4766 2426 9508 896 Korea Telecom (KIX) 1785 1792 681 131 PaeTec Communications, Inc. 18566 1606 331 194 Covad Communications 7545 1569 301 84 TPG Internet Pty Ltd 6478 1551 300 76 AT&T Worldnet Services 20115 1527 1536 645 Charter Communications 19262 1488 4939 299 Verizon Global Networks 4755 1476 653 158 TATA Communications formerly 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 2569 2167 Time Warner Telecom 1785 1792 1661 PaeTec Communications, Inc. 4766 2426 1530 Korea Telecom (KIX) 7545 1569 1485 TPG Internet Pty Ltd 6478 1551 1475 AT&T Worldnet Services 18566 1606 1412 Covad Communications 17974 1443 1409 PT TELEKOMUNIKASI INDONESIA 4755 1476 1318 TATA Communications formerly 11492 1314 1250 Cable One 10620 1392 1229 TVCABLE BOGOTA 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 31.31.96.0/19 6876 TeNeT Autonomous System 31.31.160.0/21 50168 Bogal AB 41.57.192.0/18 22750 BCSNET 41.222.79.0/24 36938 >>UNKNOWN<< 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 /9:11 /10:26 /11:74 /12:217 /13:447 /14:767 /15:1373 /16:11566 /17:5690 /18:9398 /19:19019 /20:24711 /21:25164 /22:33584 /23:32079 /24:183044 /25:1126 /26:1302 /27:722 /28:40 /29:9 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2268 3675 bellsouth.net, inc. 18566 1585 1606 Covad Communications 6478 1505 1551 AT&T Worldnet Services 4323 1380 2569 Time Warner Telecom 10620 1283 1392 TVCABLE BOGOTA 11492 1271 1314 Cable One 7011 1062 1162 Citizens Utilities 1785 1057 1792 PaeTec Communications, Inc. 6503 955 1175 AVANTEL, S.A. 22773 835 1287 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:272 2:61 4:14 5:1 8:342 12:2021 13:1 14:422 15:15 16:3 17:8 20:10 23:3 24:1558 27:654 31:2 32:60 33:3 34:2 37:1 38:714 39:1 40:101 41:2279 44:3 46:731 47:4 49:162 50:109 52:13 55:3 56:2 57:32 58:866 59:492 60:386 61:1149 62:997 63:1926 64:3873 65:2353 66:4367 67:1771 68:1076 69:2905 70:698 71:359 72:1935 73:1 74:2325 75:284 76:343 77:844 78:697 79:453 80:1091 81:817 82:515 83:466 84:645 85:1042 86:554 87:756 88:353 89:1565 90:174 91:3642 92:504 93:1042 94:1226 95:782 96:448 97:251 98:799 99:34 101:49 106:1 107:4 108:72 109:908 110:520 111:715 112:320 113:374 114:504 115:713 116:968 117:674 118:723 119:1077 120:257 121:767 122:1609 123:1042 124:1300 125:1248 128:265 129:170 130:172 131:551 132:100 133:20 134:215 135:49 136:212 137:145 138:299 139:113 140:479 141:173 142:377 143:382 144:473 145:52 146:436 147:208 148:615 149:275 150:161 151:187 152:298 153:180 154:3 155:375 156:185 157:348 158:127 159:372 160:313 161:212 162:278 163:164 164:489 165:351 166:499 167:411 168:722 169:156 170:761 171:69 172:2 173:1250 174:522 175:333 177:43 178:810 180:791 181:4 182:398 183:245 184:228 185:1 186:1056 187:865 188:914 189:1031 190:4750 192:5768 193:4792 194:3494 195:2945 196:1178 197:15 198:3566 199:3873 200:5523 201:1586 202:8392 203:8467 204:4111 205:2310 206:2642 207:3025 208:3902 209:3486 210:2676 211:1352 212:1947 213:1702 214:756 215:66 216:4861 217:1647 218:550 219:381 220:1195 221:472 222:321 223:100 End of report