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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 15 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123998
Prefixes after maximum aggregation: 78087
Unique aggregates announced to Internet: 58818
Total ASes present in the Internet Routing Table: 14990
Origin-only ASes present in the Internet Routing Table: 12986
Origin ASes announcing only one prefix: 5902
Transit ASes present in the Internet Routing Table: 2004
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 21
Number of addresses announced to Internet: 1223880448
Equivalent to 72 /8s, 242 /16s and 239 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 58399
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20704
Total APNIC prefixes after maximum aggregation: 12175
Prefixes being announced from the APNIC address blocks: 19206
Unique aggregates announced from the APNIC address blocks: 11833
APNIC Region origin ASes present in the Internet Routing Table: 1767
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 292
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109903328
Equivalent to 6 /8s, 140 /16s and 253 /24s
Percentage of available APNIC address space announced: 59.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 76672
Total ARIN prefixes after maximum aggregation: 47951
Prefixes being announced from the ARIN address blocks: 54904
Unique aggregates announced from the ARIN address blocks: 16322
ARIN Region origin ASes present in the Internet Routing Table: 8310
ARIN Region origin ASes announcing only one prefix: 2836
ARIN Region transit ASes present in the Internet Routing Table: 792
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190375936
Equivalent to 11 /8s, 88 /16s and 232 /24s
Percentage of available ARIN address space announced: 70.9
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
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, 29695 - 30719
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21328
Total RIPE prefixes after maximum aggregation: 15736
Prefixes being announced from the RIPE address blocks: 17870
Unique aggregates announced from the RIPE address blocks: 11995
RIPE Region origin ASes present in the Internet Routing Table: 4507
RIPE Region origin ASes announcing only one prefix: 2457
RIPE Region transit ASes present in the Internet Routing Table: 819
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 129013504
Equivalent to 7 /8s, 176 /16s and 151 /24s
Percentage of available RIPE address space announced: 76.9
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5292
Total LACNIC prefixes after maximum aggregation: 2225
Prefixes being announced from the LACNIC address blocks: 4685
Unique aggregates announced from the LACNIC address blocks: 2972
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 88
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12452096
Equivalent to 0 /8s, 190 /16s and 1 /24s
Percentage of available LACNIC address space announced: 37.1
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1104 1105 794 Telstra Pty Ltd
703 396 366 311 UUNET
2907 379 1974 358 SINET Japan
17557 379 28 143 Pakistan Telecom
2764 323 341 291 connect.com.au pty ltd
7474 272 276 208 Optus Communications Pty Ltd
4814 270 79 15 China Telecom (Group)
3786 243 773 210 DACOM Corporation
17676 240 3702 27 XTAGE CORPORATION
4755 236 135 75 Videsh Sanchar Nigam Ltd. Aut
4134 235 2007 123 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1584 8894 1118 UUNET Technologies, Inc.
7018 1356 7172 938 AT&T
1239 973 3121 686 Sprint
3908 933 1571 475 Supernet, Inc.
7132 808 6313 186 Southwestern Bell Internet Se
1 757 2747 482 GENUITY
4151 723 691 58 USDA
189 705 341 290 Genuity
7843 653 402 175 Adelphia Corp.
4323 568 498 165 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
209 536 2140 303 Qwest
3561 513 2343 336 Cable & Wireless USA
2386 508 482 265 AT&T Data Communications Serv
705 506 251 226 UUNET Technologies, Inc.
690 496 73 314 Merit Network
7066 483 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 455 226 174 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 779 2203 646 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 308 1173 298 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 198 98 112 BT Ignite European Backbone
5515 196 779 168 Sonera Solution Autonomous Sy
719 195 307 125 LANLINK autonomous system
786 180 1874 180 The JANET IP Service
8220 170 298 160 COLT Internet - International
20858 163 17 3 This AS will be used to conne
8708 156 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 243 36 62 Telecom Argentina Stet-France
8151 217 334 119 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 76 6 15 Empresas Publicas de Medellin
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
11830 66 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 723 665 USDA
7132 808 622 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 653 478 Adelphia Corp.
3908 933 458 Supernet, Inc.
7018 1356 418 AT&T
189 705 415 Genuity
4323 568 403 Time Warner Communications, I
1221 1104 310 Telstra Pty Ltd
1239 973 287 Sprint
6347 367 286 SAVVIS Communications Corpora
6198 455 281 BellSouth Network Solutions,
705 506 280 UUNET Technologies, Inc.
6197 476 280 BellSouth Network Solutions,
1 757 275 GENUITY
22927 287 273 TELEFONICA DE ARGENTINA
4355 373 272 EarthLink, Inc.
4814 270 255 China Telecom (Group)
27364 266 248 Armstrong Cable Services
2386 508 243 AT&T Data Communications Serv
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24 27321 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:3 /10:8 /11:13 /12:50
/13:93 /14:250 /15:464 /16:7382 /17:1640 /18:2953
/19:8303 /20:8222 /21:5923 /22:8855 /23:10635 /24:68695
/25:158 /26:193 /27:52 /28:25 /29:12 /30:24
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 592 933 Supernet, Inc.
18566 535 541 Covad Communications
702 485 779 UUNET - Commercial IP service
7018 475 1356 AT&T
701 465 1584 UUNET Technologies, Inc.
690 445 496 Merit Network
7843 401 653 Adelphia Corp.
7066 382 483 Virginia Polytechnic Institut
1239 371 973 Sprint
6198 359 455 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 305 508 AT&T Data Communications Serv
20115 299 426 Charter Communications
22927 286 287 TELEFONICA DE ARGENTINA
6140 281 294 ImpSat
1 267 757 GENUITY
27364 259 266 Armstrong Cable Services
7303 242 243 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:677 13:1 15:4 17:3 20:9 24:790
25:1 32:86 38:64 40:18 44:2 55:1
57:17 61:422 62:520 63:1884 64:1555 65:1922
66:2365 67:160 68:355 69:103 80:331 81:120
128:149 129:179 130:45 131:83 132:11 133:2
134:153 135:4 136:112 137:111 138:103 139:66
140:116 141:91 142:95 143:45 144:114 145:16
146:263 147:93 148:279 149:71 150:45 151:68
152:246 153:57 154:2 155:107 156:46 157:47
158:123 159:141 160:37 161:75 162:139 163:77
164:310 165:139 166:74 167:328 168:395 169:56
170:316 171:7 192:5353 193:2414 194:1986 195:985
196:462 198:3558 199:3407 200:2910 202:3718 203:5076
204:3080 205:2012 206:2415 207:2410 208:2650 209:2850
210:743 211:339 212:988 213:772 214:20 215:21
216:3299 217:628 218:84 219:12 220:57
End of report
