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July 2011

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Weekly Routing Table Report
by Routing Analysis Role Account 01 Jul '11

01 Jul '11

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(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 02 Jul, 2011 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 362404 Prefixes after maximum aggregation: 164721 Deaggregation factor: 2.20 Unique aggregates announced to Internet: 179786 Total ASes present in the Internet Routing Table: 38071 Prefixes per ASN: 9.52 Origin-only ASes present in the Internet Routing Table: 31670 Origin ASes announcing only one prefix: 15223 Transit ASes present in the Internet Routing Table: 5179 Transit-only ASes present in the Internet Routing Table: 136 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 33 Max AS path prepend of ASN (22394) 27 Prefixes from unregistered ASNs in the Routing Table: 877 Unregistered ASNs in the Routing Table: 484 Number of 32-bit ASNs allocated by the RIRs: 1514 Number of 32-bit ASNs visible in the Routing Table: 1222 Prefixes from 32-bit ASNs in the Routing Table: 2774 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 134 Number of addresses announced to Internet: 2492654912 Equivalent to 148 /8s, 146 /16s and 229 /24s Percentage of available address space announced: 67.3 Percentage of allocated address space announced: 67.3 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 91.0 Total number of prefixes smaller than registry allocations: 151058 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 90072 Total APNIC prefixes after maximum aggregation: 30234 APNIC Deaggregation factor: 2.98 Prefixes being announced from the APNIC address blocks: 86827 Unique aggregates announced from the APNIC address blocks: 37040 APNIC Region origin ASes present in the Internet Routing Table: 4494 APNIC Prefixes per ASN: 19.32 APNIC Region origin ASes announcing only one prefix: 1243 APNIC Region transit ASes present in the Internet Routing Table: 708 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 18 Number of APNIC region 32-bit ASNs visible in the Routing Table: 53 Number of APNIC addresses announced to Internet: 621139616 Equivalent to 37 /8s, 5 /16s and 214 /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 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: 141388 Total ARIN prefixes after maximum aggregation: 72780 ARIN Deaggregation factor: 1.94 Prefixes being announced from the ARIN address blocks: 113365 Unique aggregates announced from the ARIN address blocks: 46607 ARIN Region origin ASes present in the Internet Routing Table: 14460 ARIN Prefixes per ASN: 7.84 ARIN Region origin ASes announcing only one prefix: 5524 ARIN Region transit ASes present in the Internet Routing Table: 1519 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 30 Number of ARIN region 32-bit ASNs visible in the Routing Table: 13 Number of ARIN addresses announced to Internet: 819612288 Equivalent to 48 /8s, 218 /16s and 74 /24s Percentage of available ARIN address space announced: 65.1 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, 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: 86326 Total RIPE prefixes after maximum aggregation: 49069 RIPE Deaggregation factor: 1.76 Prefixes being announced from the RIPE address blocks: 79752 Unique aggregates announced from the RIPE address blocks: 52675 RIPE Region origin ASes present in the Internet Routing Table: 15768 RIPE Prefixes per ASN: 5.06 RIPE Region origin ASes announcing only one prefix: 7871 RIPE Region transit ASes present in the Internet Routing Table: 2503 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 899 Number of RIPE addresses announced to Internet: 478628096 Equivalent to 28 /8s, 135 /16s and 73 /24s Percentage of available RIPE address space announced: 77.1 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: 33414 Total LACNIC prefixes after maximum aggregation: 7555 LACNIC Deaggregation factor: 4.42 Prefixes being announced from the LACNIC address blocks: 32490 Unique aggregates announced from the LACNIC address blocks: 16972 LACNIC Region origin ASes present in the Internet Routing Table: 1473 LACNIC Prefixes per ASN: 22.06 LACNIC Region origin ASes announcing only one prefix: 440 LACNIC Region transit ASes present in the Internet Routing Table: 272 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: 253 Number of LACNIC addresses announced to Internet: 85702656 Equivalent to 5 /8s, 27 /16s and 184 /24s Percentage of available LACNIC address space announced: 56.8 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: 8217 Total AfriNIC prefixes after maximum aggregation: 1963 AfriNIC Deaggregation factor: 4.19 Prefixes being announced from the AfriNIC address blocks: 6492 Unique aggregates announced from the AfriNIC address blocks: 1972 AfriNIC Region origin ASes present in the Internet Routing Table: 466 AfriNIC Prefixes per ASN: 13.93 AfriNIC Region origin ASes announcing only one prefix: 145 AfriNIC Region transit ASes present in the Internet Routing Table: 103 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 24 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4 Number of AfriNIC addresses announced to Internet: 24304128 Equivalent to 1 /8s, 114 /16s and 218 /24s Percentage of available AfriNIC address space announced: 36.2 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 2460 9500 928 Korea Telecom (KIX) 17974 1835 461 42 PT TELEKOMUNIKASI INDONESIA 7545 1543 301 85 TPG Internet Pty Ltd 4755 1476 627 162 TATA Communications formerly 24560 1153 336 187 Bharti Airtel Ltd., Telemedia 9829 1098 914 45 BSNL National Internet Backbo 9583 1056 78 506 Sify Limited 4808 1050 2091 298 CNCGROUP IP network: China169 17488 960 186 103 Hathway IP Over Cable Interne 18101 932 116 139 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 3619 3819 245 bellsouth.net, inc. 18566 1913 365 241 Covad Communications 1785 1802 681 122 PaeTec Communications, Inc. 4323 1660 1082 399 Time Warner Telecom 20115 1589 1532 635 Charter Communications 19262 1450 4806 370 Verizon Global Networks 7018 1361 7053 887 AT&T WorldNet Services 22773 1347 2897 87 Cox Communications, Inc. 6478 1338 248 613 AT&T Worldnet Services 7029 1285 790 298 Windstream 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 34984 535 106 185 BILISIM TELEKOM 6830 513 1780 318 UPC Distribution Services 3292 469 2080 404 TDC Tele Danmark 20940 467 137 360 Akamai Technologies European 8866 451 134 26 Bulgarian Telecommunication C 29049 440 33 45 AzerSat LLC. 12479 438 593 7 Uni2 Autonomous System 3320 420 8151 367 Deutsche Telekom AG 8551 404 354 44 Bezeq International 702 396 1803 310 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 1541 282 157 TVCABLE BOGOTA 8151 1424 2742 356 UniNet S.A. de C.V. 28573 1271 996 80 NET Servicos de Comunicao S.A 7303 1000 507 175 Telecom Argentina Stet-France 6503 747 354 74 AVANTEL, S.A. 14420 685 55 81 CORPORACION NACIONAL DE TELEC 22047 576 322 17 VTR PUNTO NET S.A. 3816 535 232 92 Empresa Nacional de Telecomun 7738 516 986 31 Telecomunicacoes da Bahia S.A 27947 505 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 792 445 11 TEDATA 24863 789 147 37 LINKdotNET AS number 15475 524 74 8 Nile Online 36992 315 415 14 Etisalat MISR 3741 261 937 223 The Internet Solution 6713 241 215 13 Itissalat Al-MAGHRIB 24835 211 78 10 RAYA Telecom - Egypt 33776 210 12 8 Starcomms Nigeria Limited 29571 192 17 11 Ci Telecom Autonomous system 16637 149 441 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 3619 3819 245 bellsouth.net, inc. 23456 2774 692 1512 32-bit ASN transition 4766 2460 9500 928 Korea Telecom (KIX) 18566 1913 365 241 Covad Communications 17974 1835 461 42 PT TELEKOMUNIKASI INDONESIA 1785 1802 681 122 PaeTec Communications, Inc. 4323 1660 1082 399 Time Warner Telecom 20115 1589 1532 635 Charter Communications 7545 1543 301 85 TPG Internet Pty Ltd 10620 1541 282 157 TVCABLE BOGOTA Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 17974 1835 1793 PT TELEKOMUNIKASI INDONESIA 1785 1802 1680 PaeTec Communications, Inc. 18566 1913 1672 Covad Communications 4766 2460 1532 Korea Telecom (KIX) 7545 1543 1458 TPG Internet Pty Ltd 10620 1541 1384 TVCABLE BOGOTA 4755 1476 1314 TATA Communications formerly 23456 2774 1262 32-bit ASN transition 4323 1660 1261 Time Warner Telecom 22773 1347 1260 Cox Communications, Inc. 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 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 23502 UNALLOCATED 12.44.44.0/24 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 27.0.128.0/17 7514 Media Exchange, Inc. 31.135.216.0/21 51388 UAB Marsatas 41.190.32.0/23 31856 CABSAS 41.190.34.0/23 31856 CABSAS 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 /8:22 /9:12 /10:28 /11:81 /12:231 /13:461 /14:801 /15:1396 /16:11983 /17:5875 /18:9808 /19:19455 /20:25864 /21:26151 /22:34633 /23:33577 /24:188712 /25:1089 /26:1268 /27:740 /28:200 /29:9 /30:2 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6389 2227 3619 bellsouth.net, inc. 18566 1869 1913 Covad Communications 10620 1436 1541 TVCABLE BOGOTA 23456 1369 2774 32-bit ASN transition 6478 1309 1338 AT&T Worldnet Services 11492 1090 1136 Cable One 7011 1055 1156 Citizens Utilities 1785 1052 1802 PaeTec Communications, Inc. 7029 1032 1285 Windstream Communications Inc 22773 862 1347 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:319 2:47 4:16 5:1 6:3 8:337 12:1976 13:1 14:472 15:15 16:3 17:8 20:10 23:13 24:1657 27:788 31:488 32:64 33:4 34:2 36:4 37:1 38:741 39:3 40:103 41:2550 42:23 44:3 46:992 47:3 49:196 50:431 52:13 54:2 55:4 56:2 57:33 58:859 59:476 60:386 61:1173 62:1048 63:1936 64:3947 65:2293 66:3875 67:1900 68:1095 69:3026 70:758 71:389 72:1890 74:2380 75:313 76:341 77:885 78:712 79:461 80:1118 81:844 82:501 83:457 84:686 85:1080 86:552 87:759 88:334 89:1532 90:211 91:3917 92:537 93:1053 94:1319 95:853 96:446 97:254 98:890 99:36 101:77 103:100 106:10 107:19 108:71 109:1019 110:608 111:712 112:304 113:407 114:544 115:669 116:969 117:668 118:854 119:1155 120:308 121:669 122:1612 123:969 124:1298 125:1236 128:246 129:173 130:168 131:564 132:112 133:21 134:213 135:48 136:215 137:136 138:298 139:115 140:474 141:241 142:403 143:416 144:481 145:54 146:448 147:213 148:659 149:247 150:163 151:190 152:330 153:180 154:4 155:399 156:199 157:351 158:138 159:452 160:314 161:211 162:309 163:164 164:510 165:354 166:529 167:432 168:737 169:158 170:847 171:78 172:1 173:1635 174:615 175:377 176:141 177:134 178:990 180:878 181:21 182:485 183:219 184:313 185:1 186:1253 187:733 188:872 189:944 190:4928 192:5894 193:4972 194:3495 195:3027 196:1224 197:41 198:3564 199:3959 200:5519 201:1513 202:8394 203:8418 204:4222 205:2347 206:2678 207:2812 208:3962 209:3460 210:2693 211:1455 212:2103 213:1743 214:770 215:70 216:4929 217:1644 218:544 219:361 220:1204 221:492 222:361 223:180 End of report

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