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 02 Apr, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 351604 Prefixes after maximum aggregation: 159727 Deaggregation factor: 2.20 Unique aggregates announced to Internet: 174049 Total ASes present in the Internet Routing Table: 37146 Prefixes per ASN: 9.47 Origin-only ASes present in the Internet Routing Table: 31182 Origin ASes announcing only one prefix: 15020 Transit ASes present in the Internet Routing Table: 5019 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: 24 Max AS path prepend of ASN (36992) 22 Prefixes from unregistered ASNs in the Routing Table: 516 Unregistered ASNs in the Routing Table: 226 Number of 32-bit ASNs allocated by the RIRs: 1247 Number of 32-bit ASNs visible in the Routing Table: 945 Prefixes from 32-bit ASNs in the Routing Table: 2086 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 194 Number of addresses announced to Internet: 2393096992 Equivalent to 142 /8s, 163 /16s and 195 /24s Percentage of available address space announced: 64.6 Percentage of allocated address space announced: 64.6 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 90.1 Total number of prefixes smaller than registry allocations: 145654 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 87503 Total APNIC prefixes after maximum aggregation: 29875 APNIC Deaggregation factor: 2.93 Prefixes being announced from the APNIC address blocks: 84414 Unique aggregates announced from the APNIC address blocks: 36682 APNIC Region origin ASes present in the Internet Routing Table: 4385 APNIC Prefixes per ASN: 19.25 APNIC Region origin ASes announcing only one prefix: 1219 APNIC Region transit ASes present in the Internet Routing Table: 696 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 20 Number of APNIC region 32-bit ASNs visible in the Routing Table: 45 Number of APNIC addresses announced to Internet: 601819680 Equivalent to 35 /8s, 223 /16s and 10 /24s Percentage of available APNIC address space announced: 76.3 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: 138612 Total ARIN prefixes after maximum aggregation: 70802 ARIN Deaggregation factor: 1.96 Prefixes being announced from the ARIN address blocks: 111113 Unique aggregates announced from the ARIN address blocks: 45000 ARIN Region origin ASes present in the Internet Routing Table: 14282 ARIN Prefixes per ASN: 7.78 ARIN Region origin ASes announcing only one prefix: 5446 ARIN Region transit ASes present in the Internet Routing Table: 1486 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: 10 Number of ARIN addresses announced to Internet: 797373184 Equivalent to 47 /8s, 134 /16s and 243 /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: 83154 Total RIPE prefixes after maximum aggregation: 47505 RIPE Deaggregation factor: 1.75 Prefixes being announced from the RIPE address blocks: 76419 Unique aggregates announced from the RIPE address blocks: 50301 RIPE Region origin ASes present in the Internet Routing Table: 15463 RIPE Prefixes per ASN: 4.94 RIPE Region origin ASes announcing only one prefix: 7788 RIPE Region transit ASes present in the Internet Routing Table: 2418 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 23 Number of RIPE region 32-bit ASNs visible in the Routing Table: 698 Number of RIPE addresses announced to Internet: 465539072 Equivalent to 27 /8s, 191 /16s and 144 /24s Percentage of available RIPE address space announced: 75.0 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, 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: 32380 Total LACNIC prefixes after maximum aggregation: 7383 LACNIC Deaggregation factor: 4.39 Prefixes being announced from the LACNIC address blocks: 31277 Unique aggregates announced from the LACNIC address blocks: 16289 LACNIC Region origin ASes present in the Internet Routing Table: 1442 LACNIC Prefixes per ASN: 21.69 LACNIC Region origin ASes announcing only one prefix: 436 LACNIC Region transit ASes present in the Internet Routing Table: 264 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: 187 Number of LACNIC addresses announced to Internet: 81603200 Equivalent to 4 /8s, 221 /16s and 42 /24s Percentage of available LACNIC address space announced: 54.0 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: 7606 Total AfriNIC prefixes after maximum aggregation: 1823 AfriNIC Deaggregation factor: 4.17 Prefixes being announced from the AfriNIC address blocks: 5989 Unique aggregates announced from the AfriNIC address blocks: 1872 AfriNIC Region origin ASes present in the Internet Routing Table: 440 AfriNIC Prefixes per ASN: 13.61 AfriNIC Region origin ASes announcing only one prefix: 131 AfriNIC Region transit ASes present in the Internet Routing Table: 98 Average AfriNIC Region AS path length visible: 5.1 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: 22723328 Equivalent to 1 /8s, 90 /16s and 187 /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 2431 9514 905 Korea Telecom (KIX) 7545 1543 301 83 TPG Internet Pty Ltd 17974 1445 480 33 PT TELEKOMUNIKASI INDONESIA 4755 1435 634 167 TATA Communications formerly 24560 1135 322 204 Bharti Airtel Ltd., Telemedia 9583 1055 77 494 Sify Limited 4808 1024 2100 290 CNCGROUP IP network: China169 9829 1006 869 51 BSNL National Internet Backbo 17488 940 162 98 Hathway IP Over Cable Interne 18101 935 116 139 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 3670 3838 257 bellsouth.net, inc. 4323 2559 1090 396 Time Warner Telecom 1785 1787 681 131 PaeTec Communications, Inc. 18566 1606 331 195 Covad Communications 6478 1591 304 44 AT&T Worldnet Services 20115 1532 1541 641 Charter Communications 19262 1489 4935 303 Verizon Global Networks 7018 1356 6785 882 AT&T WorldNet Services 11492 1327 240 15 Cable One 22773 1292 2865 84 Cox Communications, Inc. 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 514 1780 318 UPC Distribution Services 34984 484 97 186 BILISIM TELEKOM 3292 454 2013 391 TDC Tele Danmark 8866 446 134 26 Bulgarian Telecommunication C 20940 428 108 330 Akamai Technologies European 9198 424 267 15 Kazakhtelecom Data Network Ad 3320 413 7604 359 Deutsche Telekom AG 8551 403 353 46 Bezeq International 12479 398 577 6 Uni2 Autonomous System 702 395 1800 308 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 1405 262 152 TVCABLE BOGOTA 28573 1259 969 84 NET Servicos de Comunicao S.A 8151 1248 2680 372 UniNet S.A. de C.V. 6503 1116 354 72 AVANTEL, S.A. 7303 925 465 147 Telecom Argentina Stet-France 14420 642 52 91 CORPORACION NACIONAL DE TELEC 22047 567 310 15 VTR PUNTO NET S.A. 3816 515 225 98 Empresa Nacional de Telecomun 11172 486 83 79 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 839 445 11 TEDATA 24863 774 147 39 LINKdotNET AS number 15475 421 90 8 Nile Online 36992 292 271 14 Etisalat MISR 3741 265 985 227 The Internet Solution 24835 232 78 10 RAYA Telecom - Egypt 6713 231 215 12 Itissalat Al-MAGHRIB 33776 227 13 5 Starcomms Nigeria Limited 29571 192 17 11 Ci Telecom Autonomous system 16637 146 441 85 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 3670 3838 257 bellsouth.net, inc. 4323 2559 1090 396 Time Warner Telecom 4766 2431 9514 905 Korea Telecom (KIX) 23456 2086 503 1120 32-bit ASN transition 1785 1787 681 131 PaeTec Communications, Inc. 18566 1606 331 195 Covad Communications 6478 1591 304 44 AT&T Worldnet Services 7545 1543 301 83 TPG Internet Pty Ltd 20115 1532 1541 641 Charter Communications 19262 1489 4935 303 Verizon Global Networks 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 2559 2163 Time Warner Telecom 1785 1787 1656 PaeTec Communications, Inc. 6478 1591 1547 AT&T Worldnet Services 4766 2431 1526 Korea Telecom (KIX) 7545 1543 1460 TPG Internet Pty Ltd 17974 1445 1412 PT TELEKOMUNIKASI INDONESIA 18566 1606 1411 Covad Communications 11492 1327 1312 Cable One 4755 1435 1268 TATA Communications formerly 10620 1405 1253 TVCABLE BOGOTA 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 1.3.0.0/16 38639 NTT Communications Corporatio 2.56.0.0/16 44559 E-Rent LLC 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 31.170.224.0/19 29049 AzerSat LLC. 31.171.0.0/17 29049 AzerSat LLC. 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 /9:11 /10:26 /11:74 /12:218 /13:448 /14:769 /15:1375 /16:11576 /17:5715 /18:9422 /19:19073 /20:24863 /21:25322 /22:33630 /23:32170 /24:183709 /25:1139 /26:1280 /27:708 /28:40 /29:9 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2264 3670 bellsouth.net, inc. 18566 1585 1606 Covad Communications 6478 1545 1591 AT&T Worldnet Services 4323 1377 2559 Time Warner Telecom 10620 1295 1405 TVCABLE BOGOTA 11492 1276 1327 Cable One 23456 1108 2086 32-bit ASN transition 7011 1064 1164 Citizens Utilities 1785 1056 1787 PaeTec Communications, Inc. 6503 900 1116 AVANTEL, S.A. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:296 2:54 4:14 5:1 8:347 12:2014 13:1 14:430 15:15 16:3 17:8 20:9 23:5 24:1597 27:710 31:53 32:60 33:3 34:2 37:1 38:751 39:1 40:101 41:2370 42:1 44:3 46:791 47:4 49:141 50:139 52:13 55:7 56:2 57:30 58:827 59:487 60:387 61:1142 62:1008 63:1909 64:3876 65:2337 66:4321 67:1809 68:1079 69:2906 70:697 71:343 72:1895 73:1 74:2328 75:285 76:336 77:851 78:694 79:451 80:1080 81:820 82:507 83:464 84:646 85:1032 86:555 87:762 88:339 89:1555 90:174 91:3652 92:510 93:1040 94:1232 95:785 96:459 97:253 98:817 99:35 101:49 106:1 107:4 108:80 109:927 110:518 111:680 112:324 113:385 114:508 115:669 116:934 117:678 118:767 119:1130 120:287 121:710 122:1611 123:1057 124:1286 125:1249 128:265 129:174 130:172 131:561 132:109 133:20 134:216 135:49 136:212 137:142 138:300 139:105 140:486 141:173 142:378 143:390 144:483 145:52 146:442 147:202 148:639 149:271 150:166 151:187 152:298 153:180 154:3 155:390 156:187 157:349 158:131 159:381 160:317 161:211 162:277 163:166 164:493 165:349 166:503 167:414 168:722 169:154 170:784 171:74 172:2 173:1260 174:531 175:351 177:70 178:784 180:799 181:4 182:407 183:197 184:237 185:1 186:1117 187:905 188:925 189:1038 190:4807 192:5768 193:4796 194:3479 195:2942 196:1204 197:15 198:3594 199:3879 200:5570 201:1485 202:8366 203:8452 204:4129 205:2321 206:2647 207:3023 208:3914 209:3504 210:2720 211:1366 212:1970 213:1707 214:758 215:66 216:4849 217:1630 218:557 219:373 220:1194 221:480 222:318 223:104 End of report