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 22 Oct, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 380496 Prefixes after maximum aggregation: 169790 Deaggregation factor: 2.24 Unique aggregates announced to Internet: 185657 Total ASes present in the Internet Routing Table: 39145 Prefixes per ASN: 9.72 Origin-only ASes present in the Internet Routing Table: 32357 Origin ASes announcing only one prefix: 15520 Transit ASes present in the Internet Routing Table: 5252 Transit-only ASes present in the Internet Routing Table: 137 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 33 Max AS path prepend of ASN (48687) 24 Prefixes from unregistered ASNs in the Routing Table: 1488 Unregistered ASNs in the Routing Table: 824 Number of 32-bit ASNs allocated by the RIRs: 1876 Number of 32-bit ASNs visible in the Routing Table: 1536 Prefixes from 32-bit ASNs in the Routing Table: 3535 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 90 Number of addresses announced to Internet: 2485983008 Equivalent to 148 /8s, 45 /16s and 23 /24s Percentage of available address space announced: 67.1 Percentage of allocated address space announced: 67.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 91.5 Total number of prefixes smaller than registry allocations: 160795 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 94637 Total APNIC prefixes after maximum aggregation: 30888 APNIC Deaggregation factor: 3.06 Prefixes being announced from the APNIC address blocks: 91103 Unique aggregates announced from the APNIC address blocks: 37995 APNIC Region origin ASes present in the Internet Routing Table: 4582 APNIC Prefixes per ASN: 19.88 APNIC Region origin ASes announcing only one prefix: 1263 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: 19 Number of APNIC region 32-bit ASNs visible in the Routing Table: 95 Number of APNIC addresses announced to Internet: 628909152 Equivalent to 37 /8s, 124 /16s and 100 /24s Percentage of available APNIC address space announced: 79.8 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: 145635 Total ARIN prefixes after maximum aggregation: 74451 ARIN Deaggregation factor: 1.96 Prefixes being announced from the ARIN address blocks: 117542 Unique aggregates announced from the ARIN address blocks: 48144 ARIN Region origin ASes present in the Internet Routing Table: 14743 ARIN Prefixes per ASN: 7.97 ARIN Region origin ASes announcing only one prefix: 5665 ARIN Region transit ASes present in the Internet Routing Table: 1556 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 12 Number of ARIN addresses announced to Internet: 804723200 Equivalent to 47 /8s, 247 /16s and 26 /24s Percentage of available ARIN address space announced: 64.0 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: 92842 Total RIPE prefixes after maximum aggregation: 50711 RIPE Deaggregation factor: 1.83 Prefixes being announced from the RIPE address blocks: 85517 Unique aggregates announced from the RIPE address blocks: 54134 RIPE Region origin ASes present in the Internet Routing Table: 16065 RIPE Prefixes per ASN: 5.32 RIPE Region origin ASes announcing only one prefix: 7986 RIPE Region transit ASes present in the Internet Routing Table: 2526 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1077 Number of RIPE addresses announced to Internet: 491110080 Equivalent to 29 /8s, 69 /16s and 190 /24s Percentage of available RIPE address space announced: 79.1 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: 35142 Total LACNIC prefixes after maximum aggregation: 7851 LACNIC Deaggregation factor: 4.48 Prefixes being announced from the LACNIC address blocks: 34589 Unique aggregates announced from the LACNIC address blocks: 18057 LACNIC Region origin ASes present in the Internet Routing Table: 1541 LACNIC Prefixes per ASN: 22.45 LACNIC Region origin ASes announcing only one prefix: 446 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: 348 Number of LACNIC addresses announced to Internet: 91696512 Equivalent to 5 /8s, 119 /16s and 45 /24s Percentage of available LACNIC address space announced: 60.7 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: 8532 Total AfriNIC prefixes after maximum aggregation: 2017 AfriNIC Deaggregation factor: 4.23 Prefixes being announced from the AfriNIC address blocks: 6607 Unique aggregates announced from the AfriNIC address blocks: 1982 AfriNIC Region origin ASes present in the Internet Routing Table: 493 AfriNIC Prefixes per ASN: 13.40 AfriNIC Region origin ASes announcing only one prefix: 160 AfriNIC Region transit ASes present in the Internet Routing Table: 109 Average AfriNIC Region AS path length visible: 4.6 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: 27836672 Equivalent to 1 /8s, 168 /16s and 193 /24s Percentage of available AfriNIC address space announced: 41.5 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 2502 11095 963 Korea Telecom (KIX) 17974 1888 519 33 PT TELEKOMUNIKASI INDONESIA 7545 1610 303 85 TPG Internet Pty Ltd 4755 1538 636 172 TATA Communications formerly 7552 1389 1064 8 Vietel Corporation 9829 1166 989 28 BSNL National Internet Backbo 9583 1094 80 498 Sify Limited 4808 1082 2101 308 CNCGROUP IP network: China169 24560 966 343 220 Bharti Airtel Ltd., Telemedia 18101 952 166 148 Reliance Infocom Ltd Internet 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 3545 3814 220 bellsouth.net, inc. 7029 2287 1016 197 Windstream Communications Inc 18566 2098 383 177 Covad Communications 1785 1839 680 122 PaeTec Communications, Inc. 4323 1628 1084 393 Time Warner Telecom 20115 1589 1542 623 Charter Communications 22773 1462 2907 100 Cox Communications, Inc. 19262 1395 4728 400 Verizon Global Networks 30036 1395 251 672 Mediacom Communications Corp 7018 1322 7030 866 AT&T WorldNet Services 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 3352 2203 2317 51 Ibernet, Internet Access Netw 8402 1484 352 13 Corbina telecom 6830 653 1927 415 UPC Distribution Services 34984 584 108 180 BILISIM TELEKOM 20940 548 182 422 Akamai Technologies European 3320 504 8169 384 Deutsche Telekom AG 3292 481 2080 408 TDC Tele Danmark 12479 478 593 7 Uni2 Autonomous System 8866 459 133 26 Bulgarian Telecommunication C 29049 423 31 55 AzerSat LLC. 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 1694 313 155 TVCABLE BOGOTA 28573 1442 1032 69 NET Servicos de Comunicao S.A 8151 1430 2913 352 UniNet S.A. de C.V. 7303 1227 747 177 Telecom Argentina Stet-France 27947 588 72 83 Telconet S.A 22047 580 322 17 VTR PUNTO NET S.A. 6503 569 450 69 AVANTEL, S.A. 7738 552 1050 31 Telecomunicacoes da Bahia S.A 3816 541 233 96 Empresa Nacional de Telecomun 11172 522 85 95 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 802 146 36 LINKdotNET AS number 8452 641 446 12 TEDATA 15475 443 74 8 Nile Online 36992 297 415 21 Etisalat MISR 3741 280 939 229 The Internet Solution 6713 244 519 14 Itissalat Al-MAGHRIB 15706 240 32 6 Sudatel Internet Exchange Aut 29571 217 17 13 Ci Telecom Autonomous system 33776 208 13 14 Starcomms Nigeria Limited 12258 196 28 57 Vodacom Internet Company 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 3545 3814 220 bellsouth.net, inc. 4766 2502 11095 963 Korea Telecom (KIX) 7029 2287 1016 197 Windstream Communications Inc 3352 2203 2317 51 Ibernet, Internet Access Netw 18566 2098 383 177 Covad Communications 17974 1888 519 33 PT TELEKOMUNIKASI INDONESIA 1785 1839 680 122 PaeTec Communications, Inc. 10620 1694 313 155 TVCABLE BOGOTA 4323 1628 1084 393 Time Warner Telecom 7545 1610 303 85 TPG Internet Pty Ltd Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3352 2203 2152 Ibernet, Internet Access Netw 7029 2287 2090 Windstream Communications Inc 18566 2098 1921 Covad Communications 17974 1888 1855 PT TELEKOMUNIKASI INDONESIA 1785 1839 1717 PaeTec Communications, Inc. 4766 2502 1539 Korea Telecom (KIX) 10620 1694 1539 TVCABLE BOGOTA 7545 1610 1525 TPG Internet Pty Ltd 8402 1484 1471 Corbina telecom 7552 1389 1381 Vietel Corporation 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 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 17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic 17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies, 16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic 32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser 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 /12:235 /13:464 /14:808 /15:1425 /16:12014 /17:6038 /18:10044 /19:19947 /20:27466 /21:27612 /22:37390 /23:35908 /24:197611 /25:1158 /26:1332 /27:739 /28:157 /29:4 /30:0 /31:0 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2185 3545 bellsouth.net, inc. 18566 2047 2098 Covad Communications 7029 1959 2287 Windstream Communications Inc 3352 1751 2203 Ibernet, Internet Access Netw 10620 1589 1694 TVCABLE BOGOTA 8402 1460 1484 Corbina telecom 30036 1357 1395 Mediacom Communications Corp 11492 1118 1156 Cable One 1785 1057 1839 PaeTec Communications, Inc. 7011 1048 1166 Citizens Utilities Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:407 2:482 4:15 5:1 6:3 8:361 12:1955 13:1 14:540 15:11 16:3 17:7 20:9 23:59 24:1676 27:964 31:604 32:65 33:4 34:2 36:4 38:755 40:110 41:2668 42:53 44:3 46:999 47:3 49:296 50:441 52:13 55:6 56:2 57:37 58:880 59:493 60:362 61:1180 62:1085 63:1956 64:4048 65:2310 66:4285 67:1980 68:1152 69:3193 70:892 71:379 72:1802 74:2573 75:389 76:320 77:888 78:861 79:481 80:1590 81:941 82:494 83:575 84:621 85:1119 86:405 87:894 88:418 89:1598 90:235 91:4210 92:527 93:1536 94:1308 95:1078 96:437 97:284 98:918 99:37 101:211 103:390 106:70 107:73 108:72 109:1050 110:671 111:789 112:331 113:488 114:610 115:706 116:881 117:720 118:900 119:1251 120:340 121:692 122:1569 123:1018 124:1355 125:1384 128:249 129:177 130:165 131:593 132:145 133:21 134:219 135:54 136:213 137:140 138:284 139:123 140:488 141:298 142:387 143:432 144:494 145:63 146:469 147:215 148:641 149:267 150:166 151:192 152:447 153:178 154:7 155:386 156:206 157:362 158:153 159:479 160:324 161:214 162:340 163:172 164:509 165:369 166:537 167:438 168:742 169:146 170:872 171:86 172:4 173:1703 174:684 175:426 176:271 177:338 178:1064 180:1092 181:36 182:649 183:218 184:385 185:1 186:1299 187:704 188:934 189:875 190:5096 192:5916 193:5039 194:3562 195:3102 196:1253 197:164 198:3625 199:4167 200:5485 201:1650 202:8546 203:8491 204:4293 205:2364 206:2687 207:2829 208:4029 209:3573 210:2693 211:1452 212:2079 213:1800 214:786 215:96 216:4925 217:1617 218:564 219:343 220:1243 221:514 222:345 223:274 End of report