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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 22 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 129065
Prefixes after maximum aggregation: 80632
Unique aggregates announced to Internet: 62306
Total ASes present in the Internet Routing Table: 16033
Origin-only ASes present in the Internet Routing Table: 13906
Origin ASes announcing only one prefix: 6337
Transit ASes present in the Internet Routing Table: 2127
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 23
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1247613484
Equivalent to 74 /8s, 93 /16s and 18 /24s
Percentage of available address space announced: 33.7
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 57037
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 23017
Total APNIC prefixes after maximum aggregation: 12923
Prefixes being announced from the APNIC address blocks: 21438
Unique aggregates announced from the APNIC address blocks: 12484
APNIC Region origin ASes present in the Internet Routing Table: 1923
APNIC Region origin ASes announcing only one prefix: 554
APNIC Region transit ASes present in the Internet Routing Table: 306
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 123870976
Equivalent to 7 /8s, 98 /16s and 31 /24s
Percentage of available APNIC address space announced: 66.7
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: 77367
Total ARIN prefixes after maximum aggregation: 48661
Prefixes being announced from the ARIN address blocks: 54919
Unique aggregates announced from the ARIN address blocks: 17445
ARIN Region origin ASes present in the Internet Routing Table: 8737
ARIN Region origin ASes announcing only one prefix: 3019
ARIN Region transit ASes present in the Internet Routing Table: 848
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198476576
Equivalent to 11 /8s, 212 /16s and 131 /24s
Percentage of available ARIN address space announced: 73.9
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: 23121
Total RIPE prefixes after maximum aggregation: 16793
Prefixes being announced from the RIPE address blocks: 19571
Unique aggregates announced from the RIPE address blocks: 13064
RIPE Region origin ASes present in the Internet Routing Table: 4949
RIPE Region origin ASes announcing only one prefix: 2660
RIPE Region transit ASes present in the Internet Routing Table: 875
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 137898560
Equivalent to 8 /8s, 56 /16s and 42 /24s
Percentage of available RIPE address space announced: 74.7
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
30720 - 31743
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: 5557
Total LACNIC prefixes after maximum aggregation: 2255
Prefixes being announced from the LACNIC address blocks: 5041
Unique aggregates announced from the LACNIC address blocks: 3220
LACNIC Region origin ASes present in the Internet Routing Table: 353
LACNIC Region origin ASes announcing only one prefix: 104
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 14
Number of LACNIC addresses announced to Internet: 13394944
Equivalent to 0 /8s, 204 /16s and 100 /24s
Percentage of available LACNIC address space announced: 39.9
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 966 1110 682 Telstra Pty Ltd
4755 391 134 70 Videsh Sanchar Nigam Ltd. Aut
4134 369 2295 114 Data Communications Bureau
2907 367 1879 344 SINET Japan
703 331 356 266 UUNET
2764 296 289 257 connect.com.au pty ltd
17557 287 20 144 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
9583 262 44 11 Satyam Infoway Ltd.,
7474 261 305 208 Optus Communications Pty Ltd
4766 242 2462 177 Korea Internet Exchange for "
3786 233 773 203 DACOM Corporation
4538 215 1714 21 China Education and Research
9800 202 334 55 CHINA UNICOM
9942 200 69 117 COMindico Australia
9443 188 72 83 Primus Telecommunications
9929 188 160 36 China Netcom Corp.
9498 183 20 18 BHARTI BT INTERNET LTD.
17642 157 40 116 RequestDSL BGP AS# for Sydney
4739 143 58 132 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1450 8667 1005 UUNET Technologies, Inc.
7018 1361 7081 942 AT&T
3908 946 1561 514 Supernet, Inc.
1239 923 3052 659 Sprint
18566 715 176 8 Covad Communications
4323 684 577 199 Time Warner Communications, I
6197 642 455 240 BellSouth Network Solutions,
3356 598 10814 499 Level 3 Communications, LLC
6198 570 336 196 BellSouth Network Solutions,
20115 542 275 310 Charter Communications
7843 530 473 138 Adelphia Corp.
209 521 2140 295 Qwest
852 518 1123 411 Telus Advanced Communications
7066 510 207 271 Virginia Polytechnic Institut
690 410 59 275 Merit Network
4355 400 332 108 EarthLink, Inc.
705 395 183 239 UUNET Technologies, Inc.
2386 383 510 200 AT&T Data Communications Serv
376 361 359 115 Reseau Interordinateurs Scien
6347 347 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 706 2096 587 UUNET - Commercial IP service
3301 300 1169 285 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 249 438 190 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
719 193 307 123 LANLINK autonomous system
5400 186 171 134 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
3215 179 704 89 France Telecom Transpac
786 176 1857 176 The JANET IP Service
8708 159 110 153 Romania Data Systems S.A.
3303 147 557 142 Swisscom Ltd
25186 129 146 92 France Telecom Transpac's Tra
12302 127 18 34 MobiFon S.A.
3246 125 374 123 Song Networks
3269 120 881 65 TELECOM ITALIA
2856 118 1294 109 BTnet UK Regional network
2647 101 4225 49 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 337 104 99 ImpSat
8151 236 367 124 UniNet S.A. de C.V.
7303 219 41 49 Telecom Argentina Stet-France
11172 191 77 42 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
6505 140 91 98 Global One Communicaoes Ltda
6503 128 189 92 AVANTEL, S.A.
10620 123 8 26 TVCABLE BOGOTA
6147 107 70 19 Telefonica Del Peru
11340 103 3 29 Red Universitaria Nacional
11992 86 24 32 Integrated Systems
8065 84 10 18 Empresas Publicas de Medellin
15311 76 16 39 Telefonica Empresas
6535 75 5 18 Chilesat Servicios Empresari
11830 75 22 24 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
11311 68 7 18 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 715 707 Covad Communications
4323 684 485 Time Warner Communications, I
3908 946 432 Supernet, Inc.
7018 1361 419 AT&T
6197 642 402 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 570 374 BellSouth Network Solutions,
4755 391 321 Videsh Sanchar Nigam Ltd. Aut
4355 400 292 EarthLink, Inc.
27364 315 292 Armstrong Cable Services
5668 306 291 Century Telephone
22909 304 291 Comcast Cable Corporation
1221 966 284 Telstra Pty Ltd
22773 294 279 Cox Communications, Inc. Atla
6347 347 267 SAVVIS Communications Corpora
1239 923 264 Sprint
4134 369 255 Data Communications Bureau
9583 262 251 Satyam Infoway Ltd.,
376 361 246 Reseau Interordinateurs Scien
25844 243 241 Skadden, Arps, Slate, Meagher
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
65503 PRIVATE 202.133.192.0/20 4775 Telecom Carrier /
65100 PRIVATE 210.104.28.0/25 9768 Korea Telecom
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
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
192.153.136.0/21 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:4 /10:6 /11:12 /12:55
/13:98 /14:268 /15:471 /16:7443 /17:1789 /18:3212
/19:8532 /20:8975 /21:6578 /22:9428 /23:10855 /24:70623
/25:160 /26:207 /27:158 /28:45 /29:25 /30:59
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 709 715 Covad Communications
3908 604 946 Supernet, Inc.
6197 500 642 BellSouth Network Solutions,
7018 483 1361 AT&T
701 443 1450 UUNET Technologies, Inc.
6198 441 570 BellSouth Network Solutions,
702 427 706 UUNET - Commercial IP service
7066 402 510 Virginia Polytechnic Institut
690 371 410 Merit Network
20115 350 542 Charter Communications
1239 327 923 Sprint
27364 309 315 Armstrong Cable Services
3356 288 598 Level 3 Communications, LLC
5668 272 306 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
4355 221 400 EarthLink, Inc.
3320 220 278 Deutsche Telekom AG
7843 210 530 Adelphia Corp.
209 207 521 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:721 13:1 15:6 16:1 17:2
20:7 24:819 25:1 32:83 38:51 40:23
43:1 44:2 55:1 57:14 61:334 62:448
63:1879 64:1817 65:1975 66:2164 67:276 68:396
69:276 80:422 81:155 82:65 128:158 129:157
130:63 131:80 132:19 134:167 135:10 136:182
137:120 138:133 139:49 140:165 141:137 142:101
143:49 144:58 145:35 146:278 147:67 148:304
149:78 150:121 151:60 152:211 153:59 154:7
155:130 156:58 157:53 158:140 159:142 160:46
161:69 162:361 163:67 164:317 165:152 166:100
167:305 168:177 169:99 170:311 171:9 192:5447
193:2419 194:2000 195:1288 196:483 198:3567 199:2831
200:3059 201:3 202:4083 203:5328 204:3002 205:2050
206:2281 207:2560 208:2511 209:2773 210:945 211:395
212:936 213:943 214:14 215:21 216:3286 217:770
218:110 219:42 220:116 221:13 222:1
End of report
