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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 31 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123066
Prefixes after maximum aggregation: 78035
Unique aggregates announced to Internet: 59096
Total ASes present in the Internet Routing Table: 14882
Origin-only ASes present in the Internet Routing Table: 12897
Origin ASes announcing only one prefix: 5829
Transit ASes present in the Internet Routing Table: 1985
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1219989381
Equivalent to 72 /8s, 183 /16s and 143 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 57826
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20726
Total APNIC prefixes after maximum aggregation: 12261
Prefixes being announced from the APNIC address blocks: 19176
Unique aggregates announced from the APNIC address blocks: 11839
APNIC Region origin ASes present in the Internet Routing Table: 1759
APNIC Region origin ASes announcing only one prefix: 515
APNIC Region transit ASes present in the Internet Routing Table: 288
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 108423680
Equivalent to 6 /8s, 118 /16s and 106 /24s
Percentage of available APNIC address space announced: 64.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75807
Total ARIN prefixes after maximum aggregation: 47976
Prefixes being announced from the ARIN address blocks: 54008
Unique aggregates announced from the ARIN address blocks: 16827
ARIN Region origin ASes present in the Internet Routing Table: 8266
ARIN Region origin ASes announcing only one prefix: 2785
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: 16
Number of ARIN addresses announced to Internet: 189056576
Equivalent to 11 /8s, 68 /16s and 198 /24s
Percentage of available ARIN address space announced: 70.4
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: 21300
Total RIPE prefixes after maximum aggregation: 15594
Prefixes being announced from the RIPE address blocks: 17843
Unique aggregates announced from the RIPE address blocks: 11837
RIPE Region origin ASes present in the Internet Routing Table: 4453
RIPE Region origin ASes announcing only one prefix: 2443
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128211456
Equivalent to 7 /8s, 164 /16s and 90 /24s
Percentage of available RIPE address space announced: 76.4
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: 5231
Total LACNIC prefixes after maximum aggregation: 2204
Prefixes being announced from the LACNIC address blocks: 4645
Unique aggregates announced from the LACNIC address blocks: 2950
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 86
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: 15
Number of LACNIC addresses announced to Internet: 12398336
Equivalent to 0 /8s, 189 /16s and 47 /24s
Percentage of available LACNIC address space announced: 73.9
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1098 1106 805 Telstra Pty Ltd
703 403 370 314 UUNET
2907 379 1958 358 SINET Japan
17557 372 27 136 Pakistan Telecom
2764 319 339 289 connect.com.au pty ltd
4134 314 2698 104 Data Communications Bureau
7474 307 276 208 Optus Communications Pty Ltd
4814 267 79 15 China Telecom (Group)
3786 253 776 214 DACOM Corporation
17676 237 3654 25 XTAGE CORPORATION
4755 226 135 72 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2074 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 175 222 47 CHINA UNICOM
9238 135 8 17 TATA ISP
4716 129 733 123 TTnet
4739 127 57 116 Commerical Internet eXchange
7539 125 166 119 TANet2, sponsored by NSC, TAI
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1574 8901 1114 UUNET Technologies, Inc.
7018 1354 7159 940 AT&T
3908 1059 1587 477 Supernet, Inc.
1239 973 3122 691 Sprint
1 690 8073 427 GENUITY
7132 674 5939 475 Southwestern Bell Internet Se
7843 608 404 156 Adelphia Corp.
4151 595 691 58 USDA
3561 587 2353 338 Cable & Wireless USA
4323 565 491 177 Time Warner Communications, I
852 553 1107 436 Telus Advanced Communications
18566 544 123 13 Covad Communications
705 537 208 271 UUNET Technologies, Inc.
209 532 2105 338 Qwest
690 503 73 316 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
2386 484 465 246 AT&T Data Communications Serv
6197 476 338 196 BellSouth Network Solutions,
6198 448 222 175 BellSouth Network Solutions,
20115 418 173 274 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 785 2236 652 UUNET - Commercial IP service
3301 311 1174 301 TeliaNet Sweden
3215 310 835 174 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
5400 222 77 106 BT Ignite European Backbone
1257 217 328 191 SWIPnet Swedish IP Network
719 202 307 125 LANLINK autonomous system
5515 187 779 161 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 154 42 150 Romania Data Systems S.A.
20858 154 17 3 This AS will be used to conne
3303 145 517 144 Swisscom Ltd
8220 136 215 128 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3246 110 384 107 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 289 97 106 ImpSat
7303 242 36 60 Telecom Argentina Stet-France
8151 217 349 116 UniNet S.A. de C.V.
11172 165 66 33 Servicios Alestra S.A de C.V
6503 155 191 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
6147 76 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
11992 75 8 36 Integrated Systems
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 40 Global One Colombia
13999 60 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1059 582 Supernet, Inc.
4151 595 537 USDA
18566 544 531 Covad Communications
7843 608 452 Adelphia Corp.
7018 1354 414 AT&T
4323 565 388 Time Warner Communications, I
1221 1098 293 Telstra Pty Ltd
6347 371 289 SAVVIS Communications Corpora
1239 973 282 Sprint
6197 476 280 BellSouth Network Solutions,
4355 386 277 EarthLink, Inc.
6198 448 273 BellSouth Network Solutions,
22927 286 272 TELEFONICA DE ARGENTINA
705 537 266 UUNET Technologies, Inc.
1 690 263 GENUITY
4814 267 252 China Telecom (Group)
3561 587 249 Cable & Wireless USA
27364 265 247 Armstrong Cable Services
2386 484 238 AT&T Data Communications Serv
17557 372 236 Pakistan Telecom
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
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
192.43.230.0/24 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 /12:47
/13:91 /14:243 /15:454 /16:7360 /17:1638 /18:2942
/19:8273 /20:8234 /21:5864 /22:8848 /23:10634 /24:67508
/25:196 /26:199 /27:129 /28:125 /29:78 /30:89
/31:4 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 659 1059 Supernet, Inc.
18566 539 544 Covad Communications
702 489 785 UUNET - Commercial IP service
7018 466 1354 AT&T
701 459 1574 UUNET Technologies, Inc.
690 452 503 Merit Network
7066 384 485 Virginia Polytechnic Institut
1239 373 973 Sprint
7843 357 608 Adelphia Corp.
6197 355 476 BellSouth Network Solutions,
6198 355 448 BellSouth Network Solutions,
11305 295 318 Interland Incorporated
20115 291 418 Charter Communications
2386 286 484 AT&T Data Communications Serv
22927 285 286 TELEFONICA DE ARGENTINA
705 283 537 UUNET Technologies, Inc.
6140 276 289 ImpSat
27364 258 265 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
3215 234 310 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:670 13:1 15:4 17:2 20:10
24:772 25:1 32:93 38:66 40:18 44:2
55:1 57:16 61:458 62:516 63:1946 64:1483
65:1904 66:1616 67:201 68:301 69:72 80:324
81:112 128:149 129:210 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:106
139:67 140:149 141:84 142:97 143:39 144:102
145:16 146:266 147:90 148:275 149:74 150:42
151:66 152:248 153:52 154:2 155:112 156:46
157:44 158:123 159:140 160:33 161:62 162:130
163:78 164:309 165:145 166:75 167:322 168:399
169:56 170:316 171:6 192:5302 193:2390 194:1986
195:978 196:478 198:3565 199:3286 200:2877 202:3656
203:5032 204:3063 205:2023 206:2391 207:2399 208:2672
209:2889 210:735 211:332 212:989 213:776 214:20
215:21 216:3248 217:608 218:82 219:11 220:54
End of report
