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, TRNOG, 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 31 Mar, 2012 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 403929 Prefixes after maximum aggregation: 171635 Deaggregation factor: 2.35 Unique aggregates announced to Internet: 195814 Total ASes present in the Internet Routing Table: 40542 Prefixes per ASN: 9.96 Origin-only ASes present in the Internet Routing Table: 32969 Origin ASes announcing only one prefix: 15468 Transit ASes present in the Internet Routing Table: 5416 Transit-only ASes present in the Internet Routing Table: 140 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 32 Max AS path prepend of ASN (48687) 24 Prefixes from unregistered ASNs in the Routing Table: 555 Unregistered ASNs in the Routing Table: 265 Number of 32-bit ASNs allocated by the RIRs: 2342 Number of 32-bit ASNs visible in the Routing Table: 2157 Prefixes from 32-bit ASNs in the Routing Table: 5295 Special use prefixes present in the Routing Table: 2 Prefixes being announced from unallocated address space: 1252 Number of addresses announced to Internet: 2531398224 Equivalent to 150 /8s, 226 /16s and 18 /24s Percentage of available address space announced: 68.3 Percentage of allocated address space announced: 68.3 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 92.1 Total number of prefixes smaller than registry allocations: 171545 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 98994 Total APNIC prefixes after maximum aggregation: 32099 APNIC Deaggregation factor: 3.08 Prefixes being announced from the APNIC address blocks: 95394 Unique aggregates announced from the APNIC address blocks: 39244 APNIC Region origin ASes present in the Internet Routing Table: 4680 APNIC Prefixes per ASN: 20.38 APNIC Region origin ASes announcing only one prefix: 1238 APNIC Region transit ASes present in the Internet Routing Table: 730 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 19 Number of APNIC region 32-bit ASNs visible in the Routing Table: 171 Number of APNIC addresses announced to Internet: 642314080 Equivalent to 38 /8s, 72 /16s and 239 /24s Percentage of available APNIC address space announced: 81.5 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: 149258 Total ARIN prefixes after maximum aggregation: 75828 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 120636 Unique aggregates announced from the ARIN address blocks: 49969 ARIN Region origin ASes present in the Internet Routing Table: 14935 ARIN Prefixes per ASN: 8.08 ARIN Region origin ASes announcing only one prefix: 5686 ARIN Region transit ASes present in the Internet Routing Table: 1569 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 22 Number of ARIN region 32-bit ASNs visible in the Routing Table: 16 Number of ARIN addresses announced to Internet: 805141184 Equivalent to 47 /8s, 253 /16s and 122 /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: 100814 Total RIPE prefixes after maximum aggregation: 53186 RIPE Deaggregation factor: 1.90 Prefixes being announced from the RIPE address blocks: 92127 Unique aggregates announced from the RIPE address blocks: 57226 RIPE Region origin ASes present in the Internet Routing Table: 16345 RIPE Prefixes per ASN: 5.64 RIPE Region origin ASes announcing only one prefix: 7946 RIPE Region transit ASes present in the Internet Routing Table: 2622 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1462 Number of RIPE addresses announced to Internet: 502238984 Equivalent to 29 /8s, 239 /16s and 143 /24s Percentage of available RIPE address space announced: 80.9 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: 40250 Total LACNIC prefixes after maximum aggregation: 8151 LACNIC Deaggregation factor: 4.94 Prefixes being announced from the LACNIC address blocks: 39809 Unique aggregates announced from the LACNIC address blocks: 19696 LACNIC Region origin ASes present in the Internet Routing Table: 1574 LACNIC Prefixes per ASN: 25.29 LACNIC Region origin ASes announcing only one prefix: 434 LACNIC Region transit ASes present in the Internet Routing Table: 295 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 21 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 503 Number of LACNIC addresses announced to Internet: 98765960 Equivalent to 5 /8s, 227 /16s and 12 /24s Percentage of available LACNIC address space announced: 65.4 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: 8916 Total AfriNIC prefixes after maximum aggregation: 2121 AfriNIC Deaggregation factor: 4.20 Prefixes being announced from the AfriNIC address blocks: 6971 Unique aggregates announced from the AfriNIC address blocks: 2163 AfriNIC Region origin ASes present in the Internet Routing Table: 526 AfriNIC Prefixes per ASN: 13.25 AfriNIC Region origin ASes announcing only one prefix: 164 AfriNIC Region transit ASes present in the Internet Routing Table: 115 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 25 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 31533568 Equivalent to 1 /8s, 225 /16s and 42 /24s Percentage of available AfriNIC address space announced: 47.0 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 2479 11109 992 Korea Telecom (KIX) 17974 1787 503 63 PT TELEKOMUNIKASI INDONESIA 7545 1659 301 89 TPG Internet Pty Ltd 4755 1573 386 158 TATA Communications formerly 9583 1238 95 540 Sify Limited 9829 1209 1025 29 BSNL National Internet Backbo 7552 1173 1062 11 Vietel Corporation 4808 1102 2050 316 CNCGROUP IP network: China169 24560 1021 385 167 Bharti Airtel Ltd., Telemedia 18101 949 131 160 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 3379 3807 196 bellsouth.net, inc. 7029 3379 990 155 Windstream Communications Inc 18566 2092 383 179 Covad Communications 1785 1889 680 129 PaeTec Communications, Inc. 20115 1633 1559 624 Charter Communications 4323 1602 1060 382 Time Warner Telecom 22773 1552 2910 111 Cox Communications, Inc. 30036 1415 256 745 Mediacom Communications Corp 7018 1282 9791 831 AT&T WorldNet Services 11492 1184 216 364 Cable One 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 8402 1792 544 16 Corbina telecom 2118 1427 97 13 EUnet/RELCOM Autonomous Syste 31148 677 37 9 FreeNet ISP 34984 673 188 174 BILISIM TELEKOM 12479 656 658 57 Uni2 Autonomous System 20940 646 206 498 Akamai Technologies European 6830 641 1943 412 UPC Distribution Services 8551 571 360 81 Bezeq International 3320 532 8442 398 Deutsche Telekom AG 2578 500 33 7 Demos, Moscow, Russia 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 1817 330 131 TVCABLE BOGOTA 28573 1745 1105 60 NET Servicos de Comunicao S.A 8151 1491 3018 350 UniNet S.A. de C.V. 7303 1352 827 188 Telecom Argentina Stet-France 6503 1348 418 65 AVANTEL, S.A. 26615 903 700 28 Tim Brasil S.A. 27947 688 74 100 Telconet S.A 11172 636 91 73 Servicios Alestra S.A de C.V 22047 584 326 15 VTR PUNTO NET S.A. 3816 566 242 105 Empresa Nacional de Telecomun 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 1294 958 13 TEDATA 24863 848 274 35 LINKdotNET AS number 6713 491 649 18 Itissalat Al-MAGHRIB 3741 272 924 229 The Internet Solution 33776 208 12 21 Starcomms Nigeria Limited 12258 197 28 62 Vodacom Internet Company 24835 178 80 8 RAYA Telecom - Egypt 15706 168 32 6 Sudatel Internet Exchange Aut 16637 164 664 82 MTN Network Solutions 29571 159 15 16 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 3379 3807 196 bellsouth.net, inc. 7029 3379 990 155 Windstream Communications Inc 4766 2479 11109 992 Korea Telecom (KIX) 18566 2092 383 179 Covad Communications 1785 1889 680 129 PaeTec Communications, Inc. 10620 1817 330 131 TVCABLE BOGOTA 8402 1792 544 16 Corbina telecom 17974 1787 503 63 PT TELEKOMUNIKASI INDONESIA 28573 1745 1105 60 NET Servicos de Comunicao S.A 7545 1659 301 89 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 7029 3379 3224 Windstream Communications Inc 18566 2092 1913 Covad Communications 8402 1792 1776 Corbina telecom 1785 1889 1760 PaeTec Communications, Inc. 17974 1787 1724 PT TELEKOMUNIKASI INDONESIA 10620 1817 1686 TVCABLE BOGOTA 28573 1745 1685 NET Servicos de Comunicao S.A 7545 1659 1570 TPG Internet Pty Ltd 4766 2479 1487 Korea Telecom (KIX) 22773 1552 1441 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 54439 UNALLOCATED 8.25.174.0/24 17378 DBS International 54470 UNALLOCATED 8.30.171.0/24 3356 Level 3 Communicatio 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, Complete listing at http://thyme.rand.apnic.net/current/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 128.0.0.0/21 12654 RIPE NCC RIS Project 128.0.24.0/24 12654 RIPE NCC RIS Project Complete listing at http://thyme.rand.apnic.net/current/data-dsua Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.192.0.0/22 45464 Room 201, TGU Bldg 14.192.4.0/22 45464 Room 201, TGU Bldg 14.192.8.0/22 45464 Room 201, TGU Bldg 14.192.12.0/22 45464 Room 201, TGU Bldg 14.192.16.0/22 45464 Room 201, TGU Bldg 14.192.20.0/22 45464 Room 201, TGU Bldg 14.192.24.0/22 45464 Room 201, TGU Bldg 14.192.28.0/22 45464 Room 201, TGU Bldg 23.27.0.0/20 54500 EGIHosting 23.27.16.0/20 54500 EGIHosting 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 /10:28 /11:81 /12:235 /13:457 /14:833 /15:1482 /16:12185 /17:6278 /18:10478 /19:20577 /20:28760 /21:29730 /22:40327 /23:37561 /24:211199 /25:1192 /26:1432 /27:797 /28:170 /29:60 /30:17 /31:0 /32:19 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 7029 3039 3379 Windstream Communications Inc 6389 2095 3379 bellsouth.net, inc. 18566 2041 2092 Covad Communications 8402 1769 1792 Corbina telecom 10620 1707 1817 TVCABLE BOGOTA 30036 1359 1415 Mediacom Communications Corp 11492 1147 1184 Cable One 6503 1118 1348 AVANTEL, S.A. 8452 1102 1294 TEDATA 1785 1067 1889 PaeTec Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:531 2:755 4:14 6:3 8:394 12:1987 13:1 14:605 15:12 16:3 17:7 20:8 23:160 24:1754 27:1257 31:936 32:58 33:2 34:2 36:8 37:313 38:790 40:120 41:3086 42:129 44:3 46:1454 47:3 49:343 50:535 52:13 54:6 55:11 56:3 57:32 58:966 59:495 60:278 61:1202 62:972 63:1996 64:4198 65:2274 66:4497 67:2022 68:1146 69:3184 70:910 71:465 72:1817 74:2591 75:493 76:317 77:959 78:1007 79:498 80:1210 81:897 82:666 83:548 84:513 85:1205 86:408 87:900 88:342 89:1623 90:297 91:4657 92:516 93:1376 94:1461 95:1160 96:377 97:316 98:844 99:37 100:6 101:168 103:929 106:66 107:180 108:218 109:1275 110:759 111:901 112:445 113:593 114:652 115:780 116:908 117:724 118:907 119:1207 120:350 121:696 122:1665 123:1099 124:1363 125:1263 128:561 129:189 130:256 131:595 132:173 133:21 134:242 135:62 136:212 137:176 138:351 139:145 140:494 141:244 142:385 143:399 144:513 145:66 146:485 147:243 148:748 149:298 150:157 151:176 152:460 153:171 154:7 155:430 156:215 157:379 158:176 159:525 160:343 161:248 162:343 163:190 164:555 165:391 166:562 167:464 168:819 169:127 170:844 171:124 172:4 173:1721 174:582 175:436 176:437 177:619 178:1310 180:1199 181:73 182:777 183:279 184:445 185:1 186:2136 187:1006 188:1158 189:1688 190:5498 192:5996 193:5608 194:4622 195:3589 196:1292 197:123 198:3617 199:4487 200:5805 201:1901 202:8463 203:8589 204:4342 205:2476 206:2752 207:2781 208:4053 209:3599 210:2764 211:1471 212:2008 213:1908 214:876 215:109 216:5079 217:1524 218:537 219:324 220:1228 221:557 222:325 223:329 End of report