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[routing-wg] Weekly Routing Table Report
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Routing Analysis Role Account
cscora at apnic.net
Fri May 6 21:00:30 CEST 2011
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 at lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfs at cisco.com>. Routing Table Report 04:00 +10GMT Sat 07 May, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 356623 Prefixes after maximum aggregation: 161219 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 176188 Total ASes present in the Internet Routing Table: 37501 Prefixes per ASN: 9.51 Origin-only ASes present in the Internet Routing Table: 31368 Origin ASes announcing only one prefix: 15102 Transit ASes present in the Internet Routing Table: 5082 Transit-only ASes present in the Internet Routing Table: 139 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 36 Max AS path prepend of ASN (48687) 24 Prefixes from unregistered ASNs in the Routing Table: 592 Unregistered ASNs in the Routing Table: 299 Number of 32-bit ASNs allocated by the RIRs: 1333 Number of 32-bit ASNs visible in the Routing Table: 1051 Prefixes from 32-bit ASNs in the Routing Table: 2383 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 147 Number of addresses announced to Internet: 2423268544 Equivalent to 144 /8s, 112 /16s and 36 /24s Percentage of available address space announced: 65.4 Percentage of allocated address space announced: 65.4 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 90.7 Total number of prefixes smaller than registry allocations: 148140 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 89329 Total APNIC prefixes after maximum aggregation: 29919 APNIC Deaggregation factor: 2.99 Prefixes being announced from the APNIC address blocks: 85712 Unique aggregates announced from the APNIC address blocks: 36913 APNIC Region origin ASes present in the Internet Routing Table: 4437 APNIC Prefixes per ASN: 19.32 APNIC Region origin ASes announcing only one prefix: 1235 APNIC Region transit ASes present in the Internet Routing Table: 707 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 18 Number of APNIC region 32-bit ASNs visible in the Routing Table: 48 Number of APNIC addresses announced to Internet: 612912416 Equivalent to 36 /8s, 136 /16s and 77 /24s Percentage of available APNIC address space announced: 77.7 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079 55296-56319, 131072-132095 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: 140234 Total ARIN prefixes after maximum aggregation: 71250 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 112594 Unique aggregates announced from the ARIN address blocks: 45335 ARIN Region origin ASes present in the Internet Routing Table: 14357 ARIN Prefixes per ASN: 7.84 ARIN Region origin ASes announcing only one prefix: 5492 ARIN Region transit ASes present in the Internet Routing Table: 1499 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 12 Number of ARIN addresses announced to Internet: 800024832 Equivalent to 47 /8s, 175 /16s and 105 /24s Percentage of available ARIN address space announced: 63.6 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: 83935 Total RIPE prefixes after maximum aggregation: 48029 RIPE Deaggregation factor: 1.75 Prefixes being announced from the RIPE address blocks: 77374 Unique aggregates announced from the RIPE address blocks: 51246 RIPE Region origin ASes present in the Internet Routing Table: 15569 RIPE Prefixes per ASN: 4.97 RIPE Region origin ASes announcing only one prefix: 7811 RIPE Region transit ASes present in the Internet Routing Table: 2452 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 36 Number of RIPE region 32-bit ASNs visible in the Routing Table: 777 Number of RIPE addresses announced to Internet: 468167936 Equivalent to 27 /8s, 231 /16s and 173 /24s Percentage of available RIPE address space announced: 75.4 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: 32749 Total LACNIC prefixes after maximum aggregation: 7494 LACNIC Deaggregation factor: 4.37 Prefixes being announced from the LACNIC address blocks: 31794 Unique aggregates announced from the LACNIC address blocks: 16628 LACNIC Region origin ASes present in the Internet Routing Table: 1450 LACNIC Prefixes per ASN: 21.93 LACNIC Region origin ASes announcing only one prefix: 430 LACNIC Region transit ASes present in the Internet Routing Table: 268 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: 209 Number of LACNIC addresses announced to Internet: 83079680 Equivalent to 4 /8s, 243 /16s and 178 /24s Percentage of available LACNIC address space announced: 55.0 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: 7778 Total AfriNIC prefixes after maximum aggregation: 1857 AfriNIC Deaggregation factor: 4.19 Prefixes being announced from the AfriNIC address blocks: 6135 Unique aggregates announced from the AfriNIC address blocks: 1917 AfriNIC Region origin ASes present in the Internet Routing Table: 447 AfriNIC Prefixes per ASN: 13.72 AfriNIC Region origin ASes announcing only one prefix: 134 AfriNIC Region transit ASes present in the Internet Routing Table: 97 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 24 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 23038208 Equivalent to 1 /8s, 95 /16s and 137 /24s Percentage of available AfriNIC address space announced: 34.3 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 2436 9490 906 Korea Telecom (KIX) 17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA 7545 1565 301 86 TPG Internet Pty Ltd 4755 1461 634 167 TATA Communications formerly 7552 1204 1064 7 Vietel Corporation 24560 1151 336 184 Bharti Airtel Ltd., Telemedia 9583 1057 77 492 Sify Limited 9829 1039 874 51 BSNL National Internet Backbo 4808 1036 2087 294 CNCGROUP IP network: China169 17488 938 164 100 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 3644 3822 258 bellsouth.net, inc. 4323 2582 1087 399 Time Warner Telecom 1785 1785 681 127 PaeTec Communications, Inc. 18566 1782 354 219 Covad Communications 6478 1667 313 52 AT&T Worldnet Services 20115 1531 1536 636 Charter Communications 19262 1496 4949 298 Verizon Global Networks 7018 1359 6927 887 AT&T WorldNet Services 22773 1329 2897 87 Cox Communications, Inc. 2386 1265 536 908 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 6830 519 1780 321 UPC Distribution Services 34984 508 106 184 BILISIM TELEKOM 3292 457 1997 391 TDC Tele Danmark 20940 446 131 342 Akamai Technologies European 8866 444 134 26 Bulgarian Telecommunication C 29049 443 33 43 AzerSat LLC. 3320 423 7609 368 Deutsche Telekom AG 12479 419 577 6 Uni2 Autonomous System 8551 406 355 45 Bezeq International 8402 401 320 11 Corbina telecom 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 1458 270 155 TVCABLE BOGOTA 8151 1366 2698 364 UniNet S.A. de C.V. 28573 1298 990 89 NET Servicos de Comunicao S.A 7303 926 467 149 Telecom Argentina Stet-France 6503 801 354 73 AVANTEL, S.A. 14420 665 53 91 CORPORACION NACIONAL DE TELEC 22047 557 310 15 VTR PUNTO NET S.A. 3816 518 226 99 Empresa Nacional de Telecomun 11172 495 84 83 Servicios Alestra S.A de C.V 13489 487 233 116 Orbitel S.A. E.S.P. 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 881 445 11 TEDATA 24863 782 147 37 LINKdotNET AS number 15475 421 90 8 Nile Online 36992 287 331 17 Etisalat MISR 3741 267 985 227 The Internet Solution 6713 240 215 13 Itissalat Al-MAGHRIB 33776 214 12 11 Starcomms Nigeria Limited 24835 209 78 10 RAYA Telecom - Egypt 29571 161 17 11 Ci Telecom Autonomous system 16637 149 441 86 MTN Network Solutions 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 3644 3822 258 bellsouth.net, inc. 4323 2582 1087 399 Time Warner Telecom 4766 2436 9490 906 Korea Telecom (KIX) 23456 2383 666 1288 32-bit ASN transition 17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA 1785 1785 681 127 PaeTec Communications, Inc. 18566 1782 354 219 Covad Communications 6478 1667 313 52 AT&T Worldnet Services 7545 1565 301 86 TPG Internet Pty Ltd 20115 1531 1536 636 Charter Communications Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4323 2582 2183 Time Warner Telecom 17974 1813 1784 PT TELEKOMUNIKASI INDONESIA 1785 1785 1658 PaeTec Communications, Inc. 6478 1667 1615 AT&T Worldnet Services 18566 1782 1563 Covad Communications 4766 2436 1530 Korea Telecom (KIX) 7545 1565 1479 TPG Internet Pty Ltd 10620 1458 1303 TVCABLE BOGOTA 4755 1461 1294 TATA Communications formerly 11492 1262 1247 Cable One 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 31.210.248.0/21 35706 Net at Once 41.222.79.0/24 36938 >>UNKNOWN<< 41.223.92.0/22 36936 >>UNKNOWN<< 45.127.0.0/16 13767 NetworkTwo Communications Gro 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 /8:20 /9:12 /10:28 /11:78 /12:223 /13:458 /14:790 /15:1389 /16:11689 /17:5747 /18:9693 /19:19273 /20:25574 /21:25731 /22:33992 /23:32787 /24:185889 /25:1096 /26:1273 /27:707 /28:158 /29:8 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2245 3644 bellsouth.net, inc. 18566 1744 1782 Covad Communications 6478 1621 1667 AT&T Worldnet Services 10620 1348 1458 TVCABLE BOGOTA 4323 1289 2582 Time Warner Telecom 11492 1211 1262 Cable One 23456 1182 2383 32-bit ASN transition 7011 1062 1162 Citizens Utilities 1785 1054 1785 PaeTec Communications, Inc. 22773 846 1329 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:265 2:61 4:14 5:1 6:3 8:353 12:1992 13:1 14:452 15:15 16:3 17:8 20:10 23:6 24:1627 27:734 31:296 32:63 33:3 34:2 37:1 38:765 40:101 41:2485 42:4 44:3 46:906 47:4 49:172 50:388 52:13 55:4 56:2 57:30 58:843 59:482 60:387 61:1254 62:995 63:1926 64:3927 65:2308 66:4319 67:1873 68:1079 69:2966 70:699 71:346 72:1884 73:1 74:2339 75:299 76:338 77:838 78:688 79:454 80:1079 81:813 82:494 83:446 84:630 85:1076 86:577 87:747 88:323 89:1596 90:192 91:3707 92:511 93:1062 94:1266 95:804 96:482 97:255 98:823 99:35 101:69 103:9 107:6 108:85 109:946 110:583 111:710 112:318 113:399 114:532 115:657 116:949 117:678 118:818 119:1143 120:305 121:672 122:1619 123:1080 124:1254 125:1221 128:259 129:163 130:165 131:564 132:109 133:19 134:217 135:49 136:214 137:143 138:302 139:105 140:480 141:239 142:400 143:398 144:486 145:50 146:436 147:210 148:595 149:243 150:171 151:187 152:310 153:179 154:3 155:396 156:190 157:352 158:130 159:384 160:315 161:205 162:279 163:164 164:498 165:349 166:513 167:426 168:699 169:153 170:784 171:77 172:1 173:1538 174:538 175:373 177:119 178:859 180:818 181:19 182:434 183:208 184:260 185:1 186:1153 187:800 188:847 189:941 190:4853 192:5792 193:4827 194:3466 195:2966 196:1201 197:16 198:3564 199:3921 200:5526 201:1504 202:8357 203:8448 204:4137 205:2327 206:2747 207:3038 208:3960 209:3481 210:2721 211:1372 212:1978 213:1718 214:721 215:64 216:4893 217:1657 218:565 219:371 220:1204 221:484 222:342 223:146 End of report
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