This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats@lists.apnic.net For historical data, please see http://thyme.apnic.net. If you have any comments please contact Philip Smith <pfs@cisco.com>. Routing Table Report 04:00 +10GMT Sat 22 Mar, 2008 Report Website: http://thyme.apnic.net Detailed Analysis: http://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 249926 Prefixes after maximum aggregation: 125708 Deaggregation factor: 1.99 Unique aggregates announced to Internet: 121435 Total ASes present in the Internet Routing Table: 27716 Prefixes per ASN: 9.02 Origin-only ASes present in the Internet Routing Table: 24163 Origin ASes announcing only one prefix: 11205 Transit ASes present in the Internet Routing Table: 3553 Transit-only ASes present in the Internet Routing Table: 76 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 18 Max AS path prepend of ASN (43380) 13 Prefixes from unregistered ASNs in the Routing Table: 25270 Unregistered ASNs in the Routing Table: 1928 Number of 32-bit ASNs allocated by the RIRs: 46 Prefixes from 32-bit ASNs in the Routing Table: 8 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 874 Number of addresses announced to Internet: 1847560448 Equivalent to 110 /8s, 31 /16s and 137 /24s Percentage of available address space announced: 49.8 Percentage of allocated address space announced: 61.2 Percentage of available address space allocated: 81.4 Percentage of address space in use by end-sites: 71.0 Total number of prefixes smaller than registry allocations: 118974 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 42273 Total APNIC prefixes after maximum aggregation: 13276 APNIC Deaggregation factor: 3.18 Prefixes being announced from the APNIC address blocks: 54431 Unique aggregates announced from the APNIC address blocks: 23158 APNIC Region origin ASes present in the Internet Routing Table: 1905 APNIC Prefixes per ASN: 28.57 APNIC Region origin ASes announcing only one prefix: 553 APNIC Region transit ASes present in the Internet Routing Table: 348 Average APNIC Region AS path length visible: 3.6 Max APNIC Region AS path length visible: 16 Number of APNIC addresses announced to Internet: 336420960 Equivalent to 20 /8s, 13 /16s and 96 /24s Percentage of available APNIC address space announced: 77.1 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079 APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 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, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 106628 Total ARIN prefixes after maximum aggregation: 58657 ARIN Deaggregation factor: 1.82 Prefixes being announced from the ARIN address blocks: 85319 Unique aggregates announced from the ARIN address blocks: 33814 ARIN Region origin ASes present in the Internet Routing Table: 11645 ARIN Prefixes per ASN: 7.33 ARIN Region origin ASes announcing only one prefix: 4517 ARIN Region transit ASes present in the Internet Routing Table: 1035 Average ARIN Region AS path length visible: 3.4 Max ARIN Region AS path length visible: 15 Number of ARIN addresses announced to Internet: 360305408 Equivalent to 21 /8s, 121 /16s and 211 /24s Percentage of available ARIN address space announced: 74.1 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 ARIN Address Blocks 24/8, 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, 173/8, 174/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 53063 Total RIPE prefixes after maximum aggregation: 32987 RIPE Deaggregation factor: 1.61 Prefixes being announced from the RIPE address blocks: 48596 Unique aggregates announced from the RIPE address blocks: 32653 RIPE Region origin ASes present in the Internet Routing Table: 11060 RIPE Prefixes per ASN: 4.39 RIPE Region origin ASes announcing only one prefix: 5776 RIPE Region transit ASes present in the Internet Routing Table: 1682 Average RIPE Region AS path length visible: 4.0 Max RIPE Region AS path length visible: 18 Number of RIPE addresses announced to Internet: 347894304 Equivalent to 20 /8s, 188 /16s and 114 /24s Percentage of available RIPE address space announced: 79.8 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 RIPE Address Blocks 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, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 19100 Total LACNIC prefixes after maximum aggregation: 4771 LACNIC Deaggregation factor: 4.00 Prefixes being announced from the LACNIC address blocks: 17466 Unique aggregates announced from the LACNIC address blocks: 9543 LACNIC Region origin ASes present in the Internet Routing Table: 882 LACNIC Prefixes per ASN: 19.80 LACNIC Region origin ASes announcing only one prefix: 279 LACNIC Region transit ASes present in the Internet Routing Table: 152 Average LACNIC Region AS path length visible: 4.0 Max LACNIC Region AS path length visible: 18 Number of LACNIC addresses announced to Internet: 49790848 Equivalent to 2 /8s, 247 /16s and 191 /24s Percentage of available LACNIC address space announced: 49.5 LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 3591 Total AfriNIC prefixes after maximum aggregation: 1135 AfriNIC Deaggregation factor: 3.16 Prefixes being announced from the AfriNIC address blocks: 4008 Unique aggregates announced from the AfriNIC address blocks: 1814 AfriNIC Region origin ASes present in the Internet Routing Table: 234 AfriNIC Prefixes per ASN: 17.13 AfriNIC Region origin ASes announcing only one prefix: 80 AfriNIC Region transit ASes present in the Internet Routing Table: 44 Average AfriNIC Region AS path length visible: 3.8 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC addresses announced to Internet: 10090752 Equivalent to 0 /8s, 153 /16s and 249 /24s Percentage of available AfriNIC address space announced: 30.1 AfriNIC AS Blocks 36864-37887 & ERX transfers AfriNIC Address Blocks 41/8, 196/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4755 1612 386 85 Videsh Sanchar Nigam Ltd. Aut 9583 1151 140 16 Sify Limited 9498 1123 551 65 BHARTI BT INTERNET LTD. 17488 1033 66 86 Hathway IP Over Cable Interne 4134 855 12473 317 CHINANET-BACKBONE 4766 849 6005 340 Korea Telecom (KIX) 18101 673 126 52 Reliance Infocom Ltd Internet 9829 594 449 11 BSNL National Internet Backbo 4812 561 967 91 China Telecom (Shanghai) 1221 545 1951 420 Telstra Pty Ltd Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7018 1413 5926 1000 AT&T WorldNet Services 2386 1390 657 850 AT&T Data Communications Serv 4323 1386 1028 367 Time Warner Telecom 11492 1216 146 23 Cable One 7011 1073 312 610 Citizens Utilities 18566 1046 296 10 Covad Communications 20115 1038 830 495 Charter Communications 1785 1008 479 107 AppliedTheory Corporation 6197 989 728 477 BellSouth Network Solutions, 174 968 6836 816 Cogent Communications Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 3292 395 1776 360 TDC Tele Danmark 8452 383 188 7 TEDATA 3301 341 1459 310 TeliaNet Sweden 3320 322 7045 267 Deutsche Telekom AG 8866 293 78 24 Bulgarian Telecommunication C 3215 277 2655 91 France Telecom Transpac 5462 275 666 26 Telewest Broadband 6746 263 127 241 Dynamic Network Technologies, 680 259 2046 258 DFN-IP service G-WiN 8708 254 421 245 Romania Data Systems S.A. Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 1186 2449 220 UniNet S.A. de C.V. 11830 556 299 9 Instituto Costarricense de El 7303 452 220 60 Telecom Argentina Stet-France 16814 426 27 10 NSS, S.A. 11172 406 116 68 Servicios Alestra S.A de C.V 6471 395 85 39 ENTEL CHILE S.A. 10620 392 103 51 TVCABLE BOGOTA 14117 352 25 15 Telefonica del Sur S.A. 22047 322 270 14 VTR PUNTO NET S.A. 10481 310 152 10 Prima S.A. Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 451 60 27 LINKdotNET AS number 3741 287 869 224 The Internet Solution 2018 254 265 126 Tertiary Education Network 20858 215 34 3 EgyNet 6713 143 135 11 Itissalat Al-MAGHRIB 33783 130 9 16 EEPAD TISP TELECOM & INTERNET 5536 121 8 16 Internet Egypt Network 33776 99 6 7 Starcomms Nigeria Limited 24835 89 48 7 RAYA Telecom - Egypt 29571 80 13 7 Ci Telecom Autonomous system Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 1768 2992 85 bellsouth.net, inc. 23577 1644 34 703 Korea Telecom (ATM-MPLS) 4755 1612 386 85 Videsh Sanchar Nigam Ltd. Aut 7018 1413 5926 1000 AT&T WorldNet Services 2386 1390 657 850 AT&T Data Communications Serv 4323 1386 1028 367 Time Warner Telecom 11492 1216 146 23 Cable One 8151 1186 2449 220 UniNet S.A. de C.V. 9583 1151 140 16 Sify Limited 9498 1123 551 65 BHARTI BT INTERNET LTD. Complete listing at http://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4755 1612 1527 Videsh Sanchar Nigam Ltd. Aut 11492 1216 1193 Cable One 9583 1151 1135 Sify Limited 9498 1123 1058 BHARTI BT INTERNET LTD. 18566 1046 1036 Covad Communications 4323 1386 1019 Time Warner Telecom 8151 1186 966 UniNet S.A. de C.V. 17676 1018 952 Softbank BB Corp. 17488 1033 947 Hathway IP Over Cable Interne 23577 1644 941 Korea Telecom (ATM-MPLS) Complete listing at http://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 14780 UNALLOCATED 4.79.181.0/24 10310 Yahoo! 12180 UNALLOCATED 4.79.248.0/24 1239 Sprint 26478 UNALLOCATED 8.7.228.0/24 6461 AboveNet Communicati 12180 UNALLOCATED 8.10.16.0/24 3549 Global Crossing 12180 UNALLOCATED 8.10.58.0/23 3549 Global Crossing 14779 UNALLOCATED 8.12.144.0/24 10310 Yahoo! 16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic 22492 UNALLOCATED 12.2.46.0/24 1239 Sprint 14984 UNALLOCATED 12.2.192.0/24 7132 SBC Internet Service 15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies, Complete listing at http://thyme.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 24.51.159.0/24 7843 Adelphia Corp. 24.54.224.0/19 20001 HoldCo LLC - Road Runner 24.75.160.0/19 19548 Adelphia Business Solutions 24.75.192.0/18 19548 Adelphia Business Solutions 24.142.40.0/21 7018 AT&T WorldNet Services 24.142.160.0/19 7018 AT&T WorldNet Services 24.246.0.0/17 7018 AT&T WorldNet Services 24.246.128.0/18 7018 AT&T WorldNet Services 62.61.220.0/24 24974 Tachyon Europe BV - Wireless 63.140.213.0/24 22555 Universal Talkware Corporatio Complete listing at http://thyme.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 /9:9 /10:16 /11:40 /12:137 /13:277 /14:499 /15:996 /16:9788 /17:4286 /18:7287 /19:15266 /20:17486 /21:16712 /22:21210 /23:22361 /24:131209 /25:769 /26:946 /27:488 /28:107 /29:9 /30:1 /31:0 /32:8 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 11492 1202 1216 Cable One 2386 1091 1390 AT&T Data Communications Serv 18566 1027 1046 Covad Communications 9583 987 1151 Sify Limited 4755 959 1612 Videsh Sanchar Nigam Ltd. Aut 7011 955 1073 Citizens Utilities 6478 933 934 AT&T Worldnet Services 17488 848 1033 Hathway IP Over Cable Interne 23577 813 1644 Korea Telecom (ATM-MPLS) 9498 796 1123 BHARTI BT INTERNET LTD. Complete listing at http://thyme.apnic.net/current/data/sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:9 8:102 11:1 12:1998 13:1 15:21 16:3 17:6 18:12 20:35 24:1046 25:1 32:59 33:4 38:406 40:95 41:621 44:2 47:8 52:3 55:3 56:3 57:22 58:514 59:427 60:422 61:983 62:1106 63:1963 64:3352 65:2360 66:3619 67:1064 68:661 69:2109 70:510 71:141 72:1521 73:6 74:886 75:222 76:275 77:626 78:528 79:120 80:884 81:848 82:611 83:364 84:549 85:943 86:388 87:632 88:309 89:1209 90:11 91:1119 92:235 93:141 96:18 97:16 98:100 99:3 116:568 117:278 118:77 119:350 121:470 122:722 123:298 124:803 125:1126 128:321 129:201 130:124 131:402 132:67 133:9 134:188 135:32 136:221 137:119 138:154 139:65 140:483 141:109 142:376 143:275 144:346 145:54 146:334 147:132 148:494 149:180 150:121 151:161 152:142 153:127 154:11 155:266 156:208 157:252 158:167 159:222 160:265 161:110 162:206 163:197 164:568 165:431 166:296 167:428 168:593 169:128 170:425 171:28 172:3 189:145 190:1530 192:5768 193:4100 194:3264 195:2380 196:1058 198:3762 199:3230 200:5498 201:1311 202:7535 203:7790 204:3998 205:2086 206:2414 207:2719 208:3206 209:3473 210:2524 211:1062 212:1288 213:1605 214:445 215:48 216:4228 217:1229 218:349 219:403 220:1056 221:403 222:313 End of report