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 16 Apr, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 354448 Prefixes after maximum aggregation: 160446 Deaggregation factor: 2.21 Unique aggregates announced to Internet: 175187 Total ASes present in the Internet Routing Table: 37330 Prefixes per ASN: 9.49 Origin-only ASes present in the Internet Routing Table: 31290 Origin ASes announcing only one prefix: 15055 Transit ASes present in the Internet Routing Table: 5039 Transit-only ASes present in the Internet Routing Table: 133 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: 598 Unregistered ASNs in the Routing Table: 263 Number of 32-bit ASNs allocated by the RIRs: 1295 Number of 32-bit ASNs visible in the Routing Table: 1001 Prefixes from 32-bit ASNs in the Routing Table: 2210 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 154 Number of addresses announced to Internet: 2411560512 Equivalent to 143 /8s, 189 /16s and 126 /24s Percentage of available address space announced: 65.1 Percentage of allocated address space announced: 65.1 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: 147006 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 88171 Total APNIC prefixes after maximum aggregation: 29869 APNIC Deaggregation factor: 2.95 Prefixes being announced from the APNIC address blocks: 85167 Unique aggregates announced from the APNIC address blocks: 37065 APNIC Region origin ASes present in the Internet Routing Table: 4407 APNIC Prefixes per ASN: 19.33 APNIC Region origin ASes announcing only one prefix: 1227 APNIC Region transit ASes present in the Internet Routing Table: 699 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 20 Number of APNIC region 32-bit ASNs visible in the Routing Table: 48 Number of APNIC addresses announced to Internet: 609096480 Equivalent to 36 /8s, 78 /16s and 19 /24s Percentage of available APNIC address space announced: 77.2 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: 139725 Total ARIN prefixes after maximum aggregation: 71044 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 112194 Unique aggregates announced from the ARIN address blocks: 45081 ARIN Region origin ASes present in the Internet Routing Table: 14325 ARIN Prefixes per ASN: 7.83 ARIN Region origin ASes announcing only one prefix: 5472 ARIN Region transit ASes present in the Internet Routing Table: 1489 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: 797865344 Equivalent to 47 /8s, 142 /16s and 117 /24s Percentage of available ARIN address space announced: 63.4 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: 83950 Total RIPE prefixes after maximum aggregation: 47756 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 77071 Unique aggregates announced from the RIPE address blocks: 50757 RIPE Region origin ASes present in the Internet Routing Table: 15521 RIPE Prefixes per ASN: 4.97 RIPE Region origin ASes announcing only one prefix: 7794 RIPE Region transit ASes present in the Internet Routing Table: 2431 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: 744 Number of RIPE addresses announced to Internet: 466827392 Equivalent to 27 /8s, 211 /16s and 56 /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: 32396 Total LACNIC prefixes after maximum aggregation: 7436 LACNIC Deaggregation factor: 4.36 Prefixes being announced from the LACNIC address blocks: 31349 Unique aggregates announced from the LACNIC address blocks: 16421 LACNIC Region origin ASes present in the Internet Routing Table: 1439 LACNIC Prefixes per ASN: 21.79 LACNIC Region origin ASes announcing only one prefix: 429 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: 193 Number of LACNIC addresses announced to Internet: 81899648 Equivalent to 4 /8s, 225 /16s and 176 /24s Percentage of available LACNIC address space announced: 54.2 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: 7714 Total AfriNIC prefixes after maximum aggregation: 1829 AfriNIC Deaggregation factor: 4.22 Prefixes being announced from the AfriNIC address blocks: 6082 Unique aggregates announced from the AfriNIC address blocks: 1881 AfriNIC Region origin ASes present in the Internet Routing Table: 448 AfriNIC Prefixes per ASN: 13.58 AfriNIC Region origin ASes announcing only one prefix: 133 AfriNIC Region transit ASes present in the Internet Routing Table: 99 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: 22753536 Equivalent to 1 /8s, 91 /16s and 49 /24s Percentage of available AfriNIC address space announced: 33.9 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 2433 9484 902 Korea Telecom (KIX) 17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA 7545 1543 300 80 TPG Internet Pty Ltd 4755 1445 638 166 TATA Communications formerly 24560 1137 322 203 Bharti Airtel Ltd., Telemedia 4808 1064 2140 293 CNCGROUP IP network: China169 9583 1055 77 496 Sify Limited 9829 1008 870 50 BSNL National Internet Backbo 17488 942 162 98 Hathway IP Over Cable Interne 18101 934 116 139 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 3662 3822 255 bellsouth.net, inc. 4323 2661 1090 396 Time Warner Telecom 1785 1788 681 128 PaeTec Communications, Inc. 18566 1759 349 229 Covad Communications 6478 1623 307 37 AT&T Worldnet Services 20115 1535 1552 639 Charter Communications 19262 1495 4949 298 Verizon Global Networks 7018 1350 6801 878 AT&T WorldNet Services 22773 1298 2865 84 Cox Communications, Inc. 2386 1269 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 518 1780 320 UPC Distribution Services 34984 505 98 183 BILISIM TELEKOM 29049 467 33 34 AzerSat LLC. 3292 454 1997 391 TDC Tele Danmark 8866 446 134 26 Bulgarian Telecommunication C 20940 436 126 335 Akamai Technologies European 3320 418 7607 364 Deutsche Telekom AG 12479 406 577 6 Uni2 Autonomous System 8551 403 353 46 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 1426 265 157 TVCABLE BOGOTA 28573 1274 972 86 NET Servicos de Comunicao S.A 8151 1252 2686 374 UniNet S.A. de C.V. 7303 924 465 147 Telecom Argentina Stet-France 6503 901 354 72 AVANTEL, S.A. 14420 663 53 91 CORPORACION NACIONAL DE TELEC 22047 568 310 15 VTR PUNTO NET S.A. 3816 516 225 98 Empresa Nacional de Telecomun 11172 487 99 81 Servicios Alestra S.A de C.V 27947 480 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 840 445 11 TEDATA 24863 778 147 39 LINKdotNET AS number 15475 422 90 8 Nile Online 36992 295 287 12 Etisalat MISR 3741 266 985 227 The Internet Solution 6713 235 215 13 Itissalat Al-MAGHRIB 33776 227 13 5 Starcomms Nigeria Limited 24835 222 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 3662 3822 255 bellsouth.net, inc. 4323 2661 1090 396 Time Warner Telecom 4766 2433 9484 902 Korea Telecom (KIX) 23456 2210 644 1206 32-bit ASN transition 17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA 1785 1788 681 128 PaeTec Communications, Inc. 18566 1759 349 229 Covad Communications 6478 1623 307 37 AT&T Worldnet Services 7545 1543 300 80 TPG Internet Pty Ltd 20115 1535 1552 639 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 2661 2265 Time Warner Telecom 17974 1813 1784 PT TELEKOMUNIKASI INDONESIA 1785 1788 1660 PaeTec Communications, Inc. 6478 1623 1586 AT&T Worldnet Services 4766 2433 1531 Korea Telecom (KIX) 18566 1759 1530 Covad Communications 7545 1543 1463 TPG Internet Pty Ltd 4755 1445 1279 TATA Communications formerly 10620 1426 1269 TVCABLE BOGOTA 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 45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network: 45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network: 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 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 31.7.168.0/21 48057 Company for interactive techn 31.10.32.0/20 42004 Unlimited Group 31.10.56.0/21 23456 32-bit ASN transition 31.134.48.0/20 48559 Infomex Sp. z o.o. 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 /10:26 /11:76 /12:219 /13:452 /14:774 /15:1376 /16:11604 /17:5737 /18:9469 /19:19145 /20:25180 /21:25557 /22:33681 /23:32570 /24:185400 /25:1120 /26:1274 /27:701 /28:40 /29:8 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2259 3662 bellsouth.net, inc. 18566 1727 1759 Covad Communications 6478 1577 1623 AT&T Worldnet Services 4323 1356 2661 Time Warner Telecom 10620 1316 1426 TVCABLE BOGOTA 11492 1211 1262 Cable One 23456 1143 2210 32-bit ASN transition 7011 1062 1161 Citizens Utilities 1785 1058 1788 PaeTec Communications, Inc. 22773 842 1298 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:256 2:62 4:14 5:1 8:347 12:2000 13:1 14:436 15:15 16:3 17:8 20:9 23:5 24:1604 27:721 31:220 32:60 33:3 34:2 37:1 38:764 40:101 41:2402 42:1 44:3 46:851 47:4 49:173 50:358 52:13 55:7 56:2 57:27 58:844 59:478 60:387 61:1238 62:1008 63:1920 64:3916 65:2325 66:4350 67:1814 68:1082 69:2956 70:700 71:345 72:1906 73:1 74:2337 75:299 76:337 77:840 78:688 79:460 80:1088 81:828 82:505 83:455 84:646 85:1067 86:564 87:761 88:339 89:1584 90:181 91:3711 92:513 93:1053 94:1257 95:792 96:453 97:250 98:821 99:35 101:62 103:1 106:1 107:4 108:80 109:954 110:543 111:694 112:325 113:389 114:524 115:681 116:940 117:675 118:805 119:1137 120:290 121:675 122:1631 123:1062 124:1247 125:1266 128:265 129:164 130:172 131:562 132:113 133:20 134:217 135:49 136:213 137:142 138:301 139:103 140:487 141:174 142:398 143:394 144:484 145:53 146:440 147:204 148:597 149:243 150:171 151:187 152:307 153:180 154:3 155:394 156:190 157:354 158:132 159:382 160:315 161:245 162:277 163:164 164:488 165:350 166:514 167:419 168:725 169:154 170:780 171:75 172:1 173:1492 174:530 175:356 177:71 178:852 180:815 181:7 182:419 183:196 184:243 185:1 186:1139 187:807 188:988 189:1001 190:4841 192:5784 193:4816 194:3468 195:2966 196:1208 197:16 198:3568 199:3919 200:5531 201:1500 202:8347 203:8452 204:4140 205:2323 206:2730 207:3027 208:3951 209:3501 210:2728 211:1361 212:1977 213:1719 214:732 215:67 216:4863 217:1659 218:556 219:385 220:1195 221:479 222:341 223:137 End of report