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 05 May, 2012 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 406993 Prefixes after maximum aggregation: 173163 Deaggregation factor: 2.35 Unique aggregates announced to Internet: 198390 Total ASes present in the Internet Routing Table: 40878 Prefixes per ASN: 9.96 Origin-only ASes present in the Internet Routing Table: 33126 Origin ASes announcing only one prefix: 15619 Transit ASes present in the Internet Routing Table: 5471 Transit-only ASes present in the Internet Routing Table: 141 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 64 Max AS path prepend of ASN ( 9902) 56 Prefixes from unregistered ASNs in the Routing Table: 402 Unregistered ASNs in the Routing Table: 131 Number of 32-bit ASNs allocated by the RIRs: 2663 Number of 32-bit ASNs visible in the Routing Table: 2281 Prefixes from 32-bit ASNs in the Routing Table: 5694 Special use prefixes present in the Routing Table: 2 Prefixes being announced from unallocated address space: 114 Number of addresses announced to Internet: 2544196464 Equivalent to 151 /8s, 165 /16s and 91 /24s Percentage of available address space announced: 68.6 Percentage of allocated address space announced: 68.7 Percentage of available address space allocated: 99.9 Percentage of address space in use by end-sites: 92.5 Total number of prefixes smaller than registry allocations: 174082 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 99714 Total APNIC prefixes after maximum aggregation: 32251 APNIC Deaggregation factor: 3.09 Prefixes being announced from the APNIC address blocks: 96165 Unique aggregates announced from the APNIC address blocks: 39795 APNIC Region origin ASes present in the Internet Routing Table: 4682 APNIC Prefixes per ASN: 20.54 APNIC Region origin ASes announcing only one prefix: 1239 APNIC Region transit ASes present in the Internet Routing Table: 728 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 20 Number of APNIC region 32-bit ASNs visible in the Routing Table: 197 Number of APNIC addresses announced to Internet: 644332128 Equivalent to 38 /8s, 103 /16s and 186 /24s Percentage of available APNIC address space announced: 81.7 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: 150460 Total ARIN prefixes after maximum aggregation: 76455 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 121468 Unique aggregates announced from the ARIN address blocks: 50615 ARIN Region origin ASes present in the Internet Routing Table: 15067 ARIN Prefixes per ASN: 8.06 ARIN Region origin ASes announcing only one prefix: 5733 ARIN Region transit ASes present in the Internet Routing Table: 1593 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 17 Number of ARIN addresses announced to Internet: 810105536 Equivalent to 48 /8s, 73 /16s and 58 /24s Percentage of available ARIN address space announced: 64.6 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: 100875 Total RIPE prefixes after maximum aggregation: 53982 RIPE Deaggregation factor: 1.87 Prefixes being announced from the RIPE address blocks: 92742 Unique aggregates announced from the RIPE address blocks: 58472 RIPE Region origin ASes present in the Internet Routing Table: 16538 RIPE Prefixes per ASN: 5.61 RIPE Region origin ASes announcing only one prefix: 8041 RIPE Region transit ASes present in the Internet Routing Table: 2638 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 28 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1535 Number of RIPE addresses announced to Internet: 511625288 Equivalent to 30 /8s, 126 /16s and 200 /24s Percentage of available RIPE address space announced: 82.4 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: 41119 Total LACNIC prefixes after maximum aggregation: 8257 LACNIC Deaggregation factor: 4.98 Prefixes being announced from the LACNIC address blocks: 41000 Unique aggregates announced from the LACNIC address blocks: 20353 LACNIC Region origin ASes present in the Internet Routing Table: 1595 LACNIC Prefixes per ASN: 25.71 LACNIC Region origin ASes announcing only one prefix: 437 LACNIC Region transit ASes present in the Internet Routing Table: 301 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 21 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 527 Number of LACNIC addresses announced to Internet: 100055944 Equivalent to 5 /8s, 246 /16s and 187 /24s Percentage of available LACNIC address space announced: 66.3 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: 8955 Total AfriNIC prefixes after maximum aggregation: 2151 AfriNIC Deaggregation factor: 4.16 Prefixes being announced from the AfriNIC address blocks: 6977 Unique aggregates announced from the AfriNIC address blocks: 2233 AfriNIC Region origin ASes present in the Internet Routing Table: 536 AfriNIC Prefixes per ASN: 13.02 AfriNIC Region origin ASes announcing only one prefix: 169 AfriNIC Region transit ASes present in the Internet Routing Table: 126 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: 5 Number of AfriNIC addresses announced to Internet: 31795968 Equivalent to 1 /8s, 229 /16s and 43 /24s Percentage of available AfriNIC address space announced: 47.4 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 2506 11113 1012 Korea Telecom (KIX) 17974 1866 510 73 PT TELEKOMUNIKASI INDONESIA 7545 1678 301 86 TPG Internet Pty Ltd 4755 1575 385 155 TATA Communications formerly 9829 1281 1069 30 BSNL National Internet Backbo 7552 1178 1062 11 Vietel Corporation 9583 1149 85 494 Sify Limited 4808 1110 2050 318 CNCGROUP IP network: China169 24560 1027 385 167 Bharti Airtel Ltd., Telemedia 9498 962 291 65 BHARTI Airtel Ltd. 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 3425 3807 194 bellsouth.net, inc. 7029 3373 986 159 Windstream Communications Inc 18566 2092 382 179 Covad Communications 1785 1895 680 130 PaeTec Communications, Inc. 20115 1640 1566 619 Charter Communications 4323 1606 1044 383 Time Warner Telecom 22773 1591 2911 115 Cox Communications, Inc. 30036 1423 261 761 Mediacom Communications Corp 7018 1247 10038 817 AT&T WorldNet Services 11492 1186 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 1719 544 16 Corbina telecom 34984 687 188 172 BILISIM TELEKOM 31148 683 37 9 FreeNet ISP 12479 672 669 68 Uni2 Autonomous System 6830 655 2215 426 UPC Distribution Services 20940 642 208 502 Akamai Technologies European 8551 573 360 80 Bezeq International 3320 534 8442 399 Deutsche Telekom AG 2578 500 33 7 Demos, Moscow, Russia 3292 472 2108 406 TDC Tele Danmark 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 1854 332 179 TVCABLE BOGOTA 28573 1825 1130 59 NET Servicos de Comunicao S.A 6503 1525 418 65 AVANTEL, S.A. 8151 1476 2999 340 UniNet S.A. de C.V. 7303 1371 837 188 Telecom Argentina Stet-France 26615 904 761 33 Tim Brasil S.A. 27947 685 74 98 Telconet S.A 11172 643 91 73 Servicios Alestra S.A de C.V 22047 582 326 15 VTR PUNTO NET S.A. 3816 572 242 100 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 1309 958 13 TEDATA 24863 843 274 35 LINKdotNET AS number 6713 493 649 18 Itissalat Al-MAGHRIB 3741 263 921 223 The Internet Solution 12258 197 28 62 Vodacom Internet Company 33776 186 12 21 Starcomms Nigeria Limited 24835 179 80 8 RAYA Telecom - Egypt 15706 169 32 6 Sudatel Internet Exchange Aut 16637 158 666 83 MTN Network Solutions 29571 157 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 3425 3807 194 bellsouth.net, inc. 7029 3373 986 159 Windstream Communications Inc 4766 2506 11113 1012 Korea Telecom (KIX) 18566 2092 382 179 Covad Communications 1785 1895 680 130 PaeTec Communications, Inc. 17974 1866 510 73 PT TELEKOMUNIKASI INDONESIA 10620 1854 332 179 TVCABLE BOGOTA 28573 1825 1130 59 NET Servicos de Comunicao S.A 8402 1719 544 16 Corbina telecom 7545 1678 301 86 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 3373 3214 Windstream Communications Inc 18566 2092 1913 Covad Communications 17974 1866 1793 PT TELEKOMUNIKASI INDONESIA 28573 1825 1766 NET Servicos de Comunicao S.A 1785 1895 1765 PaeTec Communications, Inc. 8402 1719 1703 Corbina telecom 10620 1854 1675 TVCABLE BOGOTA 7545 1678 1592 TPG Internet Pty Ltd 4766 2506 1494 Korea Telecom (KIX) 22773 1591 1476 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 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 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 5.22.160.0/19 31042 Serbia Broadband Autonomous s 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 24.135.0.0/16 31042 Serbia Broadband Autonomous s 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 /11:82 /12:235 /13:460 /14:831 /15:1494 /16:12241 /17:6244 /18:10575 /19:20631 /20:29133 /21:30148 /22:40724 /23:38145 /24:212321 /25:1192 /26:1428 /27:782 /28:165 /29:67 /30:17 /31:0 /32:19 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 7029 3030 3373 Windstream Communications Inc 6389 2143 3425 bellsouth.net, inc. 18566 2041 2092 Covad Communications 10620 1712 1854 TVCABLE BOGOTA 8402 1697 1719 Corbina telecom 30036 1367 1423 Mediacom Communications Corp 6503 1284 1525 AVANTEL, S.A. 11492 1149 1186 Cable One 8452 1110 1309 TEDATA 7011 1069 1184 Citizens Utilities Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:537 2:651 4:14 6:3 8:406 12:1994 13:1 14:610 15:12 16:3 17:5 20:23 23:164 24:1762 27:1292 31:950 32:57 33:2 34:2 36:8 37:426 38:803 40:120 41:3083 42:135 44:3 46:1419 47:3 49:414 50:548 52:13 54:10 55:12 56:3 57:31 58:958 59:488 60:254 61:1208 62:986 63:2036 64:4166 65:2252 66:4477 67:2037 68:1160 69:3173 70:905 71:485 72:1829 74:2612 75:494 76:317 77:941 78:981 79:490 80:1213 81:907 82:680 83:546 84:483 85:1210 86:417 87:919 88:338 89:1666 90:291 91:4779 92:521 93:1489 94:1507 95:892 96:367 97:316 98:864 99:37 100:7 101:185 103:1037 106:101 107:191 108:276 109:1331 110:759 111:919 112:453 113:601 114:630 115:807 116:925 117:722 118:906 119:1232 120:354 121:691 122:1656 123:1105 124:1383 125:1247 128:560 129:194 130:252 131:623 132:179 133:22 134:245 135:62 136:215 137:173 138:356 139:183 140:494 141:242 142:409 143:429 144:521 145:70 146:500 147:282 148:770 149:306 150:157 151:179 152:466 153:172 154:12 155:400 156:217 157:376 158:175 159:544 160:338 161:260 162:347 163:191 164:581 165:397 166:573 167:465 168:822 169:128 170:860 171:127 172:2 173:1763 174:578 175:431 176:649 177:682 178:1356 180:1213 181:82 182:962 183:292 184:476 185:1 186:2249 187:1070 188:1232 189:1780 190:5536 192:6013 193:5292 194:3959 195:3408 196:1274 197:133 198:3655 199:4583 200:5835 201:1933 202:8549 203:8611 204:4343 205:2504 206:2749 207:2796 208:4045 209:3621 210:2732 211:1479 212:1993 213:1932 214:858 215:103 216:5112 217:1542 218:543 219:319 220:1232 221:557 222:323 223:337 End of report