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 20 Aug, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 368024 Prefixes after maximum aggregation: 166632 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 182554 Total ASes present in the Internet Routing Table: 38538 Prefixes per ASN: 9.55 Origin-only ASes present in the Internet Routing Table: 31989 Origin ASes announcing only one prefix: 15372 Transit ASes present in the Internet Routing Table: 5224 Transit-only ASes present in the Internet Routing Table: 144 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: 1107 Unregistered ASNs in the Routing Table: 630 Number of 32-bit ASNs allocated by the RIRs: 1659 Number of 32-bit ASNs visible in the Routing Table: 1325 Prefixes from 32-bit ASNs in the Routing Table: 3080 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 112 Number of addresses announced to Internet: 2469201344 Equivalent to 147 /8s, 45 /16s and 5 /24s Percentage of available address space announced: 66.6 Percentage of allocated address space announced: 66.6 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: 153512 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 92411 Total APNIC prefixes after maximum aggregation: 30460 APNIC Deaggregation factor: 3.03 Prefixes being announced from the APNIC address blocks: 88936 Unique aggregates announced from the APNIC address blocks: 37698 APNIC Region origin ASes present in the Internet Routing Table: 4537 APNIC Prefixes per ASN: 19.60 APNIC Region origin ASes announcing only one prefix: 1245 APNIC Region transit ASes present in the Internet Routing Table: 716 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: 73 Number of APNIC addresses announced to Internet: 624234272 Equivalent to 37 /8s, 53 /16s and 15 /24s Percentage of available APNIC address space announced: 79.2 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: 142440 Total ARIN prefixes after maximum aggregation: 73359 ARIN Deaggregation factor: 1.94 Prefixes being announced from the ARIN address blocks: 114314 Unique aggregates announced from the ARIN address blocks: 47154 ARIN Region origin ASes present in the Internet Routing Table: 14593 ARIN Prefixes per ASN: 7.83 ARIN Region origin ASes announcing only one prefix: 5613 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: 803789568 Equivalent to 47 /8s, 232 /16s and 219 /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: 87511 Total RIPE prefixes after maximum aggregation: 49738 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 80704 Unique aggregates announced from the RIPE address blocks: 53464 RIPE Region origin ASes present in the Internet Routing Table: 15904 RIPE Prefixes per ASN: 5.07 RIPE Region origin ASes announcing only one prefix: 7918 RIPE Region transit ASes present in the Internet Routing Table: 2507 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: 949 Number of RIPE addresses announced to Internet: 487724544 Equivalent to 29 /8s, 18 /16s and 22 /24s Percentage of available RIPE address space announced: 78.6 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: 34083 Total LACNIC prefixes after maximum aggregation: 7645 LACNIC Deaggregation factor: 4.46 Prefixes being announced from the LACNIC address blocks: 33332 Unique aggregates announced from the LACNIC address blocks: 17319 LACNIC Region origin ASes present in the Internet Routing Table: 1503 LACNIC Prefixes per ASN: 22.18 LACNIC Region origin ASes announcing only one prefix: 444 LACNIC Region transit ASes present in the Internet Routing Table: 276 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: 287 Number of LACNIC addresses announced to Internet: 87644928 Equivalent to 5 /8s, 57 /16s and 91 /24s Percentage of available LACNIC address space announced: 58.0 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: 8326 Total AfriNIC prefixes after maximum aggregation: 2041 AfriNIC Deaggregation factor: 4.08 Prefixes being announced from the AfriNIC address blocks: 6423 Unique aggregates announced from the AfriNIC address blocks: 2088 AfriNIC Region origin ASes present in the Internet Routing Table: 483 AfriNIC Prefixes per ASN: 13.30 AfriNIC Region origin ASes announcing only one prefix: 152 AfriNIC Region transit ASes present in the Internet Routing Table: 106 Average AfriNIC Region AS path length visible: 5.7 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: 26893056 Equivalent to 1 /8s, 154 /16s and 91 /24s Percentage of available AfriNIC address space announced: 40.1 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 2498 11046 950 Korea Telecom (KIX) 17974 1821 516 31 PT TELEKOMUNIKASI INDONESIA 7545 1576 301 83 TPG Internet Pty Ltd 4755 1534 635 169 TATA Communications formerly 7552 1412 1064 7 Vietel Corporation 24560 1199 336 187 Bharti Airtel Ltd., Telemedia 9829 1153 989 28 BSNL National Internet Backbo 9583 1076 79 496 Sify Limited 4808 1067 2098 306 CNCGROUP IP network: China169 17488 1002 188 139 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 3585 3817 227 bellsouth.net, inc. 18566 1912 364 240 Covad Communications 1785 1819 680 123 PaeTec Communications, Inc. 4323 1618 1086 401 Time Warner Telecom 20115 1586 1537 630 Charter Communications 7029 1576 991 229 Windstream Communications Inc 22773 1434 2903 97 Cox Communications, Inc. 19262 1406 4778 396 Verizon Global Networks 7018 1351 7050 882 AT&T WorldNet Services 2386 1230 516 892 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 541 107 183 BILISIM TELEKOM 6830 512 1788 317 UPC Distribution Services 20940 475 135 368 Akamai Technologies European 3292 469 2080 404 TDC Tele Danmark 8866 458 133 26 Bulgarian Telecommunication C 12479 456 593 7 Uni2 Autonomous System 3320 425 8151 371 Deutsche Telekom AG 29049 424 31 55 AzerSat LLC. 8551 404 354 44 Bezeq International 3301 398 1855 347 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 1591 294 163 TVCABLE BOGOTA 8151 1401 2770 354 UniNet S.A. de C.V. 28573 1266 996 67 NET Servicos de Comunicao S.A 7303 1064 578 176 Telecom Argentina Stet-France 6503 743 450 75 AVANTEL, S.A. 14420 705 56 85 CORPORACION NACIONAL DE TELEC 22047 578 322 17 VTR PUNTO NET S.A. 3816 532 232 96 Empresa Nacional de Telecomun 27947 518 53 54 Telconet S.A 7738 515 986 31 Telecomunicacoes da Bahia S.A 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 639 445 11 TEDATA 15475 512 74 8 Nile Online 36992 302 415 14 Etisalat MISR 3741 265 937 226 The Internet Solution 6713 244 519 14 Itissalat Al-MAGHRIB 33776 226 13 8 Starcomms Nigeria Limited 15706 219 32 6 Sudatel Internet Exchange Aut 12258 194 28 61 Vodacom Internet Company 24835 179 78 10 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 3585 3817 227 bellsouth.net, inc. 23456 3080 733 1651 32-bit ASN transition 4766 2498 11046 950 Korea Telecom (KIX) 18566 1912 364 240 Covad Communications 17974 1821 516 31 PT TELEKOMUNIKASI INDONESIA 1785 1819 680 123 PaeTec Communications, Inc. 4323 1618 1086 401 Time Warner Telecom 10620 1591 294 163 TVCABLE BOGOTA 20115 1586 1537 630 Charter Communications 7029 1576 991 229 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 1821 1790 PT TELEKOMUNIKASI INDONESIA 1785 1819 1696 PaeTec Communications, Inc. 18566 1912 1672 Covad Communications 4766 2498 1548 Korea Telecom (KIX) 7545 1576 1493 TPG Internet Pty Ltd 23456 3080 1429 32-bit ASN transition 10620 1591 1428 TVCABLE BOGOTA 7552 1412 1405 Vietel Corporation 4755 1534 1365 TATA Communications formerly 7029 1576 1347 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 /13:460 /14:796 /15:1418 /16:11935 /17:5924 /18:9961 /19:19532 /20:26588 /21:26596 /22:35566 /23:34251 /24:191318 /25:1098 /26:1303 /27:739 /28:158 /29:4 /30:0 /31:0 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2217 3585 bellsouth.net, inc. 18566 1868 1912 Covad Communications 23456 1507 3080 32-bit ASN transition 10620 1486 1591 TVCABLE BOGOTA 7029 1277 1576 Windstream Communications Inc 11492 1102 1148 Cable One 7011 1058 1161 Citizens Utilities 1785 1052 1819 PaeTec Communications, Inc. 22773 930 1434 Cox Communications, Inc. 30036 911 935 Mediacom Communications Corp Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:358 2:46 4:15 5:1 6:3 8:343 12:1954 13:1 14:505 15:15 16:3 17:5 20:10 23:27 24:1683 27:875 31:517 32:64 33:4 34:2 36:4 38:733 40:107 41:2458 42:45 44:3 46:1059 47:3 49:219 50:409 52:13 54:2 55:9 56:2 57:35 58:864 59:499 60:376 61:1179 62:1084 63:1928 64:3996 65:2300 66:3930 67:1916 68:1112 69:3085 70:779 71:372 72:1845 74:2437 75:329 76:339 77:861 78:710 79:479 80:1129 81:831 82:492 83:476 84:686 85:1078 86:499 87:839 88:335 89:1537 90:224 91:4037 92:526 93:1133 94:1339 95:872 96:419 97:267 98:924 99:37 101:78 103:212 106:69 107:32 108:74 109:1009 110:627 111:731 112:305 113:412 114:558 115:696 116:997 117:675 118:877 119:1225 120:314 121:689 122:1615 123:984 124:1317 125:1319 128:246 129:176 130:169 131:580 132:116 133:21 134:213 135:51 136:216 137:137 138:296 139:116 140:488 141:277 142:382 143:439 144:484 145:58 146:462 147:216 148:645 149:252 150:201 151:190 152:441 153:185 154:5 155:401 156:200 157:330 158:133 159:458 160:319 161:207 162:328 163:163 164:516 165:367 166:533 167:433 168:747 169:153 170:844 171:81 172:1 173:1652 174:613 175:393 176:153 177:229 178:957 180:936 181:26 182:528 183:242 184:364 185:1 186:1365 187:743 188:933 189:929 190:5131 192:5921 193:4984 194:3511 195:3038 196:1230 197:126 198:3591 199:4039 200:5517 201:1490 202:8410 203:8483 204:4248 205:2339 206:2672 207:2808 208:3998 209:3416 210:2706 211:1461 212:2085 213:1766 214:782 215:70 216:4865 217:1607 218:553 219:354 220:1220 221:515 222:354 223:241 End of report