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 <pfs@cisco.com>. Routing Table Report 04:00 +10GMT Sat 23 Apr, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 355581 Prefixes after maximum aggregation: 160822 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 175365 Total ASes present in the Internet Routing Table: 37371 Prefixes per ASN: 9.51 Origin-only ASes present in the Internet Routing Table: 31313 Origin ASes announcing only one prefix: 15071 Transit ASes present in the Internet Routing Table: 5046 Transit-only ASes present in the Internet Routing Table: 135 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 36 Max AS path prepend of ASN (36992) 29 Prefixes from unregistered ASNs in the Routing Table: 564 Unregistered ASNs in the Routing Table: 275 Number of 32-bit ASNs allocated by the RIRs: 1309 Number of 32-bit ASNs visible in the Routing Table: 1012 Prefixes from 32-bit ASNs in the Routing Table: 2274 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 161 Number of addresses announced to Internet: 2418199616 Equivalent to 144 /8s, 34 /16s and 204 /24s Percentage of available address space announced: 65.2 Percentage of allocated address space announced: 65.2 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 90.5 Total number of prefixes smaller than registry allocations: 147668 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 88888 Total APNIC prefixes after maximum aggregation: 29965 APNIC Deaggregation factor: 2.97 Prefixes being announced from the APNIC address blocks: 85376 Unique aggregates announced from the APNIC address blocks: 36841 APNIC Region origin ASes present in the Internet Routing Table: 4419 APNIC Prefixes per ASN: 19.32 APNIC Region origin ASes announcing only one prefix: 1226 APNIC Region transit ASes present in the Internet Routing Table: 700 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 22 Number of APNIC region 32-bit ASNs visible in the Routing Table: 48 Number of APNIC addresses announced to Internet: 610706464 Equivalent to 36 /8s, 102 /16s and 164 /24s Percentage of available APNIC address space announced: 77.4 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: 140032 Total ARIN prefixes after maximum aggregation: 71172 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 112430 Unique aggregates announced from the ARIN address blocks: 45157 ARIN Region origin ASes present in the Internet Routing Table: 14334 ARIN Prefixes per ASN: 7.84 ARIN Region origin ASes announcing only one prefix: 5473 ARIN Region transit ASes present in the Internet Routing Table: 1492 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 11 Number of ARIN addresses announced to Internet: 798645760 Equivalent to 47 /8s, 154 /16s and 94 /24s Percentage of available ARIN address space announced: 63.5 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: 84022 Total RIPE prefixes after maximum aggregation: 47852 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 77130 Unique aggregates announced from the RIPE address blocks: 51011 RIPE Region origin ASes present in the Internet Routing Table: 15538 RIPE Prefixes per ASN: 4.96 RIPE Region origin ASes announcing only one prefix: 7807 RIPE Region transit ASes present in the Internet Routing Table: 2435 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: 749 Number of RIPE addresses announced to Internet: 466814464 Equivalent to 27 /8s, 211 /16s and 6 /24s Percentage of available RIPE address space announced: 75.2 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: 32482 Total LACNIC prefixes after maximum aggregation: 7448 LACNIC Deaggregation factor: 4.36 Prefixes being announced from the LACNIC address blocks: 31486 Unique aggregates announced from the LACNIC address blocks: 16475 LACNIC Region origin ASes present in the Internet Routing Table: 1439 LACNIC Prefixes per ASN: 21.88 LACNIC Region origin ASes announcing only one prefix: 432 LACNIC Region transit ASes present in the Internet Routing Table: 261 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: 199 Number of LACNIC addresses announced to Internet: 82681984 Equivalent to 4 /8s, 237 /16s and 160 /24s Percentage of available LACNIC address space announced: 54.8 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: 7658 Total AfriNIC prefixes after maximum aggregation: 1822 AfriNIC Deaggregation factor: 4.20 Prefixes being announced from the AfriNIC address blocks: 6067 Unique aggregates announced from the AfriNIC address blocks: 1881 AfriNIC Region origin ASes present in the Internet Routing Table: 441 AfriNIC Prefixes per ASN: 13.76 AfriNIC Region origin ASes announcing only one prefix: 133 AfriNIC Region transit ASes present in the Internet Routing Table: 95 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 31 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 23300352 Equivalent to 1 /8s, 99 /16s and 137 /24s Percentage of available AfriNIC address space announced: 34.7 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 2430 9482 904 Korea Telecom (KIX) 17974 1798 515 29 PT TELEKOMUNIKASI INDONESIA 7545 1549 300 81 TPG Internet Pty Ltd 4755 1454 634 167 TATA Communications formerly 7552 1195 1064 7 Vietel Corporation 24560 1140 323 204 Bharti Airtel Ltd., Telemedia 9583 1054 77 495 Sify Limited 4808 1030 2097 293 CNCGROUP IP network: China169 9829 1008 870 50 BSNL National Internet Backbo 17488 942 164 98 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 3652 3822 255 bellsouth.net, inc. 4323 2649 1090 398 Time Warner Telecom 1785 1789 681 128 PaeTec Communications, Inc. 18566 1760 349 229 Covad Communications 6478 1636 309 43 AT&T Worldnet Services 20115 1535 1552 638 Charter Communications 19262 1495 4949 298 Verizon Global Networks 7018 1357 6801 886 AT&T WorldNet Services 22773 1299 2865 84 Cox Communications, Inc. 2386 1270 536 912 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 508 106 182 BILISIM TELEKOM 3292 455 1997 391 TDC Tele Danmark 29049 450 33 48 AzerSat LLC. 8866 446 134 26 Bulgarian Telecommunication C 20940 439 129 335 Akamai Technologies European 3320 423 7609 368 Deutsche Telekom AG 12479 409 577 6 Uni2 Autonomous System 8551 405 354 47 Bezeq International 702 396 1802 309 UUNET - Commercial IP service 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 1437 268 160 TVCABLE BOGOTA 28573 1281 988 87 NET Servicos de Comunicao S.A 8151 1248 2688 369 UniNet S.A. de C.V. 7303 927 467 149 Telecom Argentina Stet-France 6503 907 354 72 AVANTEL, S.A. 14420 663 53 91 CORPORACION NACIONAL DE TELEC 22047 565 310 15 VTR PUNTO NET S.A. 3816 516 225 98 Empresa Nacional de Telecomun 11172 488 99 82 Servicios Alestra S.A de C.V 27947 483 53 53 Telconet S.A 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 836 445 11 TEDATA 24863 778 147 39 LINKdotNET AS number 15475 422 90 8 Nile Online 36992 297 415 13 Etisalat MISR 3741 267 985 227 The Internet Solution 6713 238 215 13 Itissalat Al-MAGHRIB 33776 227 13 5 Starcomms Nigeria Limited 24835 209 78 10 RAYA Telecom - Egypt 29571 161 17 11 Ci Telecom Autonomous system 16637 148 441 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 3652 3822 255 bellsouth.net, inc. 4323 2649 1090 398 Time Warner Telecom 4766 2430 9482 904 Korea Telecom (KIX) 23456 2274 652 1233 32-bit ASN transition 17974 1798 515 29 PT TELEKOMUNIKASI INDONESIA 1785 1789 681 128 PaeTec Communications, Inc. 18566 1760 349 229 Covad Communications 6478 1636 309 43 AT&T Worldnet Services 7545 1549 300 81 TPG Internet Pty Ltd 20115 1535 1552 638 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 2649 2251 Time Warner Telecom 17974 1798 1769 PT TELEKOMUNIKASI INDONESIA 1785 1789 1661 PaeTec Communications, Inc. 6478 1636 1593 AT&T Worldnet Services 18566 1760 1531 Covad Communications 4766 2430 1526 Korea Telecom (KIX) 7545 1549 1468 TPG Internet Pty Ltd 4755 1454 1287 TATA Communications formerly 10620 1437 1277 TVCABLE BOGOTA 11492 1254 1239 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 13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic 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 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 31.192.112.0/20 30361 Swiftwill Solutions 31.192.128.0/19 31214 TIS-DIALOG Autonomous system 31.192.232.0/23 47271 CJSC "Uralunicom" 31.192.232.0/22 47271 CJSC "Uralunicom" 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 /11:77 /12:221 /13:458 /14:786 /15:1379 /16:11668 /17:5741 /18:9624 /19:19173 /20:25618 /21:25611 /22:33775 /23:32642 /24:185589 /25:1120 /26:1285 /27:700 /28:38 /29:8 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2253 3652 bellsouth.net, inc. 18566 1728 1760 Covad Communications 6478 1590 1636 AT&T Worldnet Services 4323 1346 2649 Time Warner Telecom 10620 1327 1437 TVCABLE BOGOTA 11492 1203 1254 Cable One 23456 1146 2274 32-bit ASN transition 7011 1062 1161 Citizens Utilities 1785 1059 1789 PaeTec Communications, Inc. 22773 843 1299 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:262 2:43 4:14 5:1 6:1 8:347 12:2010 13:1 14:441 15:15 16:3 17:8 20:9 23:5 24:1605 27:722 31:209 32:60 33:3 34:2 37:1 38:764 40:101 41:2400 42:3 44:3 46:866 47:4 49:177 50:365 52:13 55:3 56:2 57:31 58:846 59:478 60:387 61:1268 62:984 63:1919 64:3934 65:2326 66:4353 67:1856 68:1081 69:2977 70:700 71:345 72:1904 73:1 74:2349 75:297 76:335 77:844 78:676 79:452 80:1098 81:829 82:500 83:461 84:647 85:1082 86:559 87:760 88:332 89:1581 90:183 91:3709 92:514 93:1058 94:1260 95:787 96:466 97:251 98:823 99:35 101:63 103:5 106:1 107:5 108:84 109:932 110:550 111:695 112:325 113:361 114:523 115:683 116:949 117:674 118:800 119:1147 120:301 121:672 122:1626 123:1071 124:1250 125:1268 128:265 129:164 130:172 131:566 132:113 133:19 134:217 135:49 136:214 137:142 138:301 139:104 140:486 141:174 142:398 143:397 144:485 145:52 146:441 147:207 148:578 149:233 150:170 151:187 152:307 153:179 154:3 155:395 156:191 157:353 158:132 159:382 160:316 161:243 162:277 163:165 164:487 165:350 166:511 167:426 168:719 169:153 170:784 171:77 172:1 173:1502 174:531 175:359 177:79 178:853 180:821 181:9 182:428 183:201 184:252 185:1 186:1140 187:802 188:985 189:1004 190:4846 192:5792 193:4829 194:3457 195:2964 196:1166 197:16 198:3564 199:3920 200:5522 201:1493 202:8351 203:8446 204:4136 205:2329 206:2745 207:3029 208:3964 209:3505 210:2726 211:1382 212:1973 213:1712 214:744 215:67 216:4879 217:1657 218:561 219:374 220:1195 221:483 222:341 223:143 End of report