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 19 Apr, 2008 Report Website: http://thyme.apnic.net Detailed Analysis: http://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 253162 Prefixes after maximum aggregation: 126760 Deaggregation factor: 2.00 Unique aggregates announced to Internet: 123363 Total ASes present in the Internet Routing Table: 27936 Prefixes per ASN: 9.06 Origin-only ASes present in the Internet Routing Table: 24339 Origin ASes announcing only one prefix: 11339 Transit ASes present in the Internet Routing Table: 3597 Transit-only ASes present in the Internet Routing Table: 82 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 19 Max AS path prepend of ASN (39375) 13 Prefixes from unregistered ASNs in the Routing Table: 25206 Unregistered ASNs in the Routing Table: 1878 Number of 32-bit ASNs allocated by the RIRs: 44 Prefixes from 32-bit ASNs in the Routing Table: 9 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 817 Number of addresses announced to Internet: 1863527072 Equivalent to 111 /8s, 19 /16s and 42 /24s Percentage of available address space announced: 50.3 Percentage of allocated address space announced: 61.7 Percentage of available address space allocated: 81.4 Percentage of address space in use by end-sites: 71.6 Total number of prefixes smaller than registry allocations: 121228 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 42770 Total APNIC prefixes after maximum aggregation: 13580 APNIC Deaggregation factor: 3.15 Prefixes being announced from the APNIC address blocks: 55042 Unique aggregates announced from the APNIC address blocks: 23982 APNIC Region origin ASes present in the Internet Routing Table: 1919 APNIC Prefixes per ASN: 28.68 APNIC Region origin ASes announcing only one prefix: 552 APNIC Region transit ASes present in the Internet Routing Table: 351 Average APNIC Region AS path length visible: 3.6 Max APNIC Region AS path length visible: 14 Number of APNIC addresses announced to Internet: 343577696 Equivalent to 20 /8s, 122 /16s and 148 /24s Percentage of available APNIC address space announced: 78.8 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: 107494 Total ARIN prefixes after maximum aggregation: 59206 ARIN Deaggregation factor: 1.82 Prefixes being announced from the ARIN address blocks: 86580 Unique aggregates announced from the ARIN address blocks: 34280 ARIN Region origin ASes present in the Internet Routing Table: 11728 ARIN Prefixes per ASN: 7.38 ARIN Region origin ASes announcing only one prefix: 4573 ARIN Region transit ASes present in the Internet Routing Table: 1051 Average ARIN Region AS path length visible: 3.4 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 362513664 Equivalent to 21 /8s, 155 /16s and 133 /24s Percentage of available ARIN address space announced: 74.5 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 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: 54327 Total RIPE prefixes after maximum aggregation: 33347 RIPE Deaggregation factor: 1.63 Prefixes being announced from the RIPE address blocks: 49539 Unique aggregates announced from the RIPE address blocks: 33168 RIPE Region origin ASes present in the Internet Routing Table: 11204 RIPE Prefixes per ASN: 4.42 RIPE Region origin ASes announcing only one prefix: 5857 RIPE Region transit ASes present in the Internet Routing Table: 1705 Average RIPE Region AS path length visible: 4.0 Max RIPE Region AS path length visible: 18 Number of RIPE addresses announced to Internet: 353545728 Equivalent to 21 /8s, 18 /16s and 174 /24s Percentage of available RIPE address space announced: 81.0 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: 19668 Total LACNIC prefixes after maximum aggregation: 4920 LACNIC Deaggregation factor: 4.00 Prefixes being announced from the LACNIC address blocks: 18046 Unique aggregates announced from the LACNIC address blocks: 9732 LACNIC Region origin ASes present in the Internet Routing Table: 893 LACNIC Prefixes per ASN: 20.21 LACNIC Region origin ASes announcing only one prefix: 279 LACNIC Region transit ASes present in the Internet Routing Table: 153 Average LACNIC Region AS path length visible: 4.0 Max LACNIC Region AS path length visible: 19 Number of LACNIC addresses announced to Internet: 50580736 Equivalent to 3 /8s, 3 /16s and 205 /24s Percentage of available LACNIC address space announced: 50.2 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: 3696 Total AfriNIC prefixes after maximum aggregation: 1150 AfriNIC Deaggregation factor: 3.21 Prefixes being announced from the AfriNIC address blocks: 4073 Unique aggregates announced from the AfriNIC address blocks: 1828 AfriNIC Region origin ASes present in the Internet Routing Table: 235 AfriNIC Prefixes per ASN: 17.33 AfriNIC Region origin ASes announcing only one prefix: 78 AfriNIC Region transit ASes present in the Internet Routing Table: 43 Average AfriNIC Region AS path length visible: 3.8 Max AfriNIC Region AS path length visible: 15 Number of AfriNIC addresses announced to Internet: 11336192 Equivalent to 0 /8s, 172 /16s and 250 /24s Percentage of available AfriNIC address space announced: 33.8 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 1632 387 89 Videsh Sanchar Nigam Ltd. Aut 9583 1166 99 211 Sify Limited 9498 1162 550 61 BHARTI BT INTERNET LTD. 17488 1016 69 78 Hathway IP Over Cable Interne 4134 856 12647 320 CHINANET-BACKBONE 4766 851 6006 344 Korea Telecom (KIX) 18101 681 132 54 Reliance Infocom Ltd Internet 9829 598 450 12 BSNL National Internet Backbo 1221 544 1918 418 Telstra Pty Ltd 4812 544 980 73 China Telecom (Shanghai) 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 4323 1428 1030 377 Time Warner Telecom 7018 1407 5978 1006 AT&T WorldNet Services 2386 1394 642 862 AT&T Data Communications Serv 11492 1214 146 45 Cable One 7011 1094 318 621 Citizens Utilities 18566 1043 296 10 Covad Communications 1785 1011 511 107 AppliedTheory Corporation 6197 984 597 507 BellSouth Network Solutions, 174 967 6835 801 Cogent Communications 20115 922 874 512 Charter 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 406 1787 368 TDC Tele Danmark 8452 356 188 7 TEDATA 9198 339 74 9 Kazakhtelecom Data Network Ad 3301 338 1459 307 TeliaNet Sweden 3320 327 7045 271 Deutsche Telekom AG 8866 293 78 24 Bulgarian Telecommunication C 8551 282 269 37 Bezeq International 3215 279 2679 89 France Telecom Transpac 5462 275 666 26 Telewest Broadband 6746 267 128 244 Dynamic Network Technologies, 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 1190 2433 221 UniNet S.A. de C.V. 11830 571 299 9 Instituto Costarricense de El 22047 558 270 14 VTR PUNTO NET S.A. 7303 448 220 59 Telecom Argentina Stet-France 16814 426 27 10 NSS, S.A. 11172 415 117 70 Servicios Alestra S.A de C.V 6471 413 85 46 ENTEL CHILE S.A. 10620 403 105 52 TVCABLE BOGOTA 14117 384 25 15 Telefonica del Sur S.A. 20299 300 36 31 NEWCOM AMERICAS 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 463 61 27 LINKdotNET AS number 3741 289 853 223 The Internet Solution 20858 217 34 3 EgyNet 2018 187 222 91 Tertiary Education Network 6713 143 135 11 Itissalat Al-MAGHRIB 33783 134 10 13 EEPAD TISP TELECOM & INTERNET 5536 121 8 16 Internet Egypt Network 29571 119 13 8 Ci Telecom Autonomous system 5713 105 507 83 Telkom SA Ltd 33776 99 6 7 Starcomms Nigeria Limited 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 2838 3020 115 bellsouth.net, inc. 23577 1640 34 701 Korea Telecom (ATM-MPLS) 4755 1632 387 89 Videsh Sanchar Nigam Ltd. Aut 4323 1428 1030 377 Time Warner Telecom 7018 1407 5978 1006 AT&T WorldNet Services 2386 1394 642 862 AT&T Data Communications Serv 11492 1214 146 45 Cable One 8151 1190 2433 221 UniNet S.A. de C.V. 9583 1166 99 211 Sify Limited 9498 1162 550 61 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 1632 1543 Videsh Sanchar Nigam Ltd. Aut 11492 1214 1169 Cable One 9498 1162 1101 BHARTI BT INTERNET LTD. 4323 1428 1051 Time Warner Telecom 18566 1043 1033 Covad Communications 8151 1190 969 UniNet S.A. de C.V. 9583 1166 955 Sify Limited 17676 1016 951 Softbank BB Corp. 23577 1640 939 Korea Telecom (ATM-MPLS) 17488 1016 938 Hathway IP Over Cable Interne 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 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 15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies, 32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic 13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications 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 7843 Adelphia Corp. 24.75.192.0/18 7843 Adelphia Corp. 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 /11:42 /12:138 /13:279 /14:507 /15:1008 /16:9837 /17:4360 /18:7294 /19:15314 /20:17741 /21:16990 /22:21579 /23:22563 /24:133179 /25:766 /26:908 /27:494 /28:101 /29:9 /30:1 /31:0 /32:8 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 11492 1200 1214 Cable One 2386 1092 1394 AT&T Data Communications Serv 18566 1024 1043 Covad Communications 9583 1004 1166 Sify Limited 7011 977 1094 Citizens Utilities 4755 970 1632 Videsh Sanchar Nigam Ltd. Aut 6478 910 911 AT&T Worldnet Services 6389 882 2838 bellsouth.net, inc. 9498 836 1162 BHARTI BT INTERNET LTD. 17488 828 1016 Hathway IP Over Cable Interne Complete listing at http://thyme.apnic.net/current/data/sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:9 8:105 12:2004 13:1 15:20 16:3 17:6 18:13 20:35 24:1061 25:1 32:61 33:4 38:415 40:94 41:633 44:2 47:8 52:3 55:3 56:3 57:22 58:517 59:452 60:410 61:980 62:1080 63:1958 64:3460 65:2395 66:3633 67:1154 68:672 69:2145 70:608 71:125 72:1688 73:6 74:942 75:225 76:291 77:628 78:578 79:146 80:889 81:851 82:590 83:364 84:561 85:1002 86:383 87:643 88:323 89:1259 90:11 91:1192 92:274 93:251 96:23 97:14 98:138 99:3 116:603 117:285 118:113 119:388 120:13 121:517 122:745 123:314 124:838 125:1111 128:318 129:199 130:126 131:397 132:65 133:9 134:180 135:32 136:220 137:111 138:147 139:61 140:489 141:96 142:430 143:279 144:346 145:50 146:346 147:142 148:501 149:181 150:128 151:176 152:142 153:121 154:10 155:265 156:175 157:264 158:168 159:221 160:253 161:110 162:209 163:196 164:510 165:445 166:299 167:316 168:606 169:127 170:427 171:28 172:2 189:162 190:1779 192:5769 193:4090 194:3251 195:2393 196:1037 198:3741 199:3236 200:5613 201:1401 202:7566 203:7808 204:3996 205:2124 206:2395 207:2744 208:3261 209:3472 210:2542 211:1043 212:1344 213:1649 214:449 215:48 216:4281 217:1218 218:353 219:407 220:1080 221:396 222:311 End of report