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 17 Sep, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 371690 Prefixes after maximum aggregation: 167917 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 184823 Total ASes present in the Internet Routing Table: 38823 Prefixes per ASN: 9.57 Origin-only ASes present in the Internet Routing Table: 32200 Origin ASes announcing only one prefix: 15478 Transit ASes present in the Internet Routing Table: 5208 Transit-only ASes present in the Internet Routing Table: 134 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 36 Max AS path prepend of ASN (22394) 33 Prefixes from unregistered ASNs in the Routing Table: 1319 Unregistered ASNs in the Routing Table: 742 Number of 32-bit ASNs allocated by the RIRs: 1739 Number of 32-bit ASNs visible in the Routing Table: 1415 Prefixes from 32-bit ASNs in the Routing Table: 3247 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 111 Number of addresses announced to Internet: 2477780352 Equivalent to 147 /8s, 175 /16s and 237 /24s Percentage of available address space announced: 66.9 Percentage of allocated address space announced: 66.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 91.3 Total number of prefixes smaller than registry allocations: 154979 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 93491 Total APNIC prefixes after maximum aggregation: 30741 APNIC Deaggregation factor: 3.04 Prefixes being announced from the APNIC address blocks: 90025 Unique aggregates announced from the APNIC address blocks: 38232 APNIC Region origin ASes present in the Internet Routing Table: 4567 APNIC Prefixes per ASN: 19.71 APNIC Region origin ASes announcing only one prefix: 1258 APNIC Region transit ASes present in the Internet Routing Table: 710 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 21 Number of APNIC region 32-bit ASNs visible in the Routing Table: 88 Number of APNIC addresses announced to Internet: 627559520 Equivalent to 37 /8s, 103 /16s and 204 /24s Percentage of available APNIC address space announced: 79.6 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: 143323 Total ARIN prefixes after maximum aggregation: 73655 ARIN Deaggregation factor: 1.95 Prefixes being announced from the ARIN address blocks: 115248 Unique aggregates announced from the ARIN address blocks: 47939 ARIN Region origin ASes present in the Internet Routing Table: 14662 ARIN Prefixes per ASN: 7.86 ARIN Region origin ASes announcing only one prefix: 5652 ARIN Region transit ASes present in the Internet Routing Table: 1553 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 12 Number of ARIN addresses announced to Internet: 804847104 Equivalent to 47 /8s, 248 /16s and 254 /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: 88191 Total RIPE prefixes after maximum aggregation: 50131 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 81218 Unique aggregates announced from the RIPE address blocks: 53898 RIPE Region origin ASes present in the Internet Routing Table: 15982 RIPE Prefixes per ASN: 5.08 RIPE Region origin ASes announcing only one prefix: 7963 RIPE Region transit ASes present in the Internet Routing Table: 2501 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: 1003 Number of RIPE addresses announced to Internet: 488917248 Equivalent to 29 /8s, 36 /16s and 73 /24s Percentage of available RIPE address space announced: 78.8 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: 34743 Total LACNIC prefixes after maximum aggregation: 7768 LACNIC Deaggregation factor: 4.47 Prefixes being announced from the LACNIC address blocks: 34025 Unique aggregates announced from the LACNIC address blocks: 17820 LACNIC Region origin ASes present in the Internet Routing Table: 1527 LACNIC Prefixes per ASN: 22.28 LACNIC Region origin ASes announcing only one prefix: 451 LACNIC Region transit ASes present in the Internet Routing Table: 273 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: 308 Number of LACNIC addresses announced to Internet: 89082496 Equivalent to 5 /8s, 79 /16s and 74 /24s Percentage of available LACNIC address space announced: 59.0 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: 8517 Total AfriNIC prefixes after maximum aggregation: 2026 AfriNIC Deaggregation factor: 4.20 Prefixes being announced from the AfriNIC address blocks: 6597 Unique aggregates announced from the AfriNIC address blocks: 2037 AfriNIC Region origin ASes present in the Internet Routing Table: 486 AfriNIC Prefixes per ASN: 13.57 AfriNIC Region origin ASes announcing only one prefix: 154 AfriNIC Region transit ASes present in the Internet Routing Table: 105 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: 27220736 Equivalent to 1 /8s, 159 /16s and 91 /24s Percentage of available AfriNIC address space announced: 40.6 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 2508 11047 955 Korea Telecom (KIX) 17974 2010 516 31 PT TELEKOMUNIKASI INDONESIA 7545 1597 303 85 TPG Internet Pty Ltd 4755 1548 639 170 TATA Communications formerly 24560 1182 337 194 Bharti Airtel Ltd., Telemedia 9829 1155 989 28 BSNL National Internet Backbo 9583 1078 80 505 Sify Limited 4808 1069 2088 302 CNCGROUP IP network: China169 7552 978 1062 11 Vietel Corporation 17488 957 189 159 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 3563 3817 226 bellsouth.net, inc. 18566 1912 364 237 Covad Communications 1785 1820 680 122 PaeTec Communications, Inc. 4323 1626 1085 393 Time Warner Telecom 7029 1608 1008 195 Windstream Communications Inc 20115 1595 1542 634 Charter Communications 22773 1455 2906 99 Cox Communications, Inc. 30036 1423 263 688 Mediacom Communications Corp 19262 1395 4724 399 Verizon Global Networks 7018 1331 7050 869 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 34984 559 108 179 BILISIM TELEKOM 6830 524 1811 322 UPC Distribution Services 20940 515 166 401 Akamai Technologies European 3292 472 2080 404 TDC Tele Danmark 12479 472 594 8 Uni2 Autonomous System 8866 460 133 26 Bulgarian Telecommunication C 3320 432 8152 376 Deutsche Telekom AG 29049 424 31 55 AzerSat LLC. 8402 415 352 13 Corbina telecom 8551 403 354 44 Bezeq International 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 1675 308 159 TVCABLE BOGOTA 8151 1409 2802 355 UniNet S.A. de C.V. 28573 1351 1012 68 NET Servicos de Comunicao S.A 7303 1156 678 170 Telecom Argentina Stet-France 14420 730 57 92 CORPORACION NACIONAL DE TELEC 6503 580 450 68 AVANTEL, S.A. 22047 579 322 17 VTR PUNTO NET S.A. 27947 568 55 82 Telconet S.A 3816 535 232 98 Empresa Nacional de Telecomun 11172 516 85 91 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 813 147 43 LINKdotNET AS number 8452 698 445 11 TEDATA 15475 513 74 8 Nile Online 36992 308 415 14 Etisalat MISR 3741 267 938 228 The Internet Solution 6713 242 519 14 Itissalat Al-MAGHRIB 33776 239 13 8 Starcomms Nigeria Limited 15706 219 32 6 Sudatel Internet Exchange Aut 12258 198 28 58 Vodacom Internet Company 29571 198 17 13 Ci Telecom Autonomous system 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 3563 3817 226 bellsouth.net, inc. 23456 3247 770 1753 32-bit ASN transition 4766 2508 11047 955 Korea Telecom (KIX) 17974 2010 516 31 PT TELEKOMUNIKASI INDONESIA 18566 1912 364 237 Covad Communications 1785 1820 680 122 PaeTec Communications, Inc. 10620 1675 308 159 TVCABLE BOGOTA 4323 1626 1085 393 Time Warner Telecom 7029 1608 1008 195 Windstream Communications Inc 7545 1597 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 17974 2010 1979 PT TELEKOMUNIKASI INDONESIA 1785 1820 1698 PaeTec Communications, Inc. 18566 1912 1675 Covad Communications 4766 2508 1553 Korea Telecom (KIX) 10620 1675 1516 TVCABLE BOGOTA 7545 1597 1512 TPG Internet Pty Ltd 23456 3247 1494 32-bit ASN transition 7029 1608 1413 Windstream Communications Inc 4755 1548 1378 TATA Communications formerly 22773 1455 1356 Cox 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<< 46.18.104.0/21 23456 32-bit ASN transition 50.115.128.0/21 20248 Take 2 Hosting, Inc. 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 /14:800 /15:1411 /16:11970 /17:5965 /18:10012 /19:19731 /20:26875 /21:26973 /22:36182 /23:34758 /24:192858 /25:1105 /26:1294 /27:744 /28:165 /29:4 /30:0 /31:0 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2200 3563 bellsouth.net, inc. 18566 1868 1912 Covad Communications 23456 1571 3247 32-bit ASN transition 10620 1570 1675 TVCABLE BOGOTA 30036 1381 1423 Mediacom Communications Corp 7029 1308 1608 Windstream Communications Inc 11492 1114 1152 Cable One 7011 1058 1183 Citizens Utilities 1785 1052 1820 PaeTec Communications, Inc. 22773 945 1455 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:372 2:52 4:15 5:1 6:3 8:351 12:1951 13:1 14:540 15:13 16:3 17:5 20:10 23:32 24:1678 27:940 31:530 32:64 33:4 34:2 36:4 38:742 40:108 41:2576 42:48 44:3 46:983 47:3 49:243 50:419 52:13 54:2 55:5 56:2 57:35 58:876 59:501 60:376 61:1175 62:1088 63:1944 64:4047 65:2300 66:3928 67:1939 68:1100 69:3174 70:783 71:377 72:1859 74:2437 75:315 76:339 77:870 78:665 79:469 80:1122 81:839 82:503 83:499 84:687 85:1086 86:410 87:869 88:347 89:1535 90:234 91:4088 92:527 93:1150 94:1331 95:791 96:437 97:272 98:932 99:37 101:207 103:301 106:94 107:44 108:76 109:1017 110:668 111:784 112:313 113:440 114:566 115:685 116:922 117:680 118:891 119:1199 120:338 121:685 122:1602 123:1015 124:1355 125:1354 128:248 129:179 130:167 131:577 132:120 133:21 134:215 135:53 136:212 137:137 138:294 139:108 140:493 141:288 142:389 143:407 144:483 145:61 146:468 147:214 148:636 149:251 150:153 151:190 152:452 153:177 154:6 155:390 156:202 157:356 158:144 159:461 160:324 161:207 162:334 163:176 164:508 165:372 166:536 167:433 168:747 169:146 170:860 171:84 172:4 173:1639 174:628 175:393 176:176 177:251 178:999 180:1067 181:26 182:616 183:237 184:366 185:1 186:1440 187:667 188:938 189:872 190:5156 192:5911 193:5005 194:3522 195:3057 196:1251 197:148 198:3591 199:4101 200:5514 201:1636 202:8528 203:8484 204:4251 205:2333 206:2667 207:2829 208:4032 209:3457 210:2693 211:1467 212:2088 213:1768 214:784 215:75 216:4849 217:1610 218:552 219:333 220:1197 221:514 222:343 223:266 End of report