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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 03 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125305
Prefixes after maximum aggregation: 78332
Unique aggregates announced to Internet: 59095
Total ASes present in the Internet Routing Table: 15118
Origin-only ASes present in the Internet Routing Table: 13120
Origin ASes announcing only one prefix: 5954
Transit ASes present in the Internet Routing Table: 1998
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: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1228411904
Equivalent to 73 /8s, 56 /16s and 20 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54328
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21227
Total APNIC prefixes after maximum aggregation: 12329
Prefixes being announced from the APNIC address blocks: 19670
Unique aggregates announced from the APNIC address blocks: 11991
APNIC Region origin ASes present in the Internet Routing Table: 1789
APNIC Region origin ASes announcing only one prefix: 523
APNIC Region transit ASes present in the Internet Routing Table: 300
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 112667360
Equivalent to 6 /8s, 183 /16s and 42 /24s
Percentage of available APNIC address space announced: 60.7
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: 77191
Total ARIN prefixes after maximum aggregation: 47976
Prefixes being announced from the ARIN address blocks: 55194
Unique aggregates announced from the ARIN address blocks: 16463
ARIN Region origin ASes present in the Internet Routing Table: 8366
ARIN Region origin ASes announcing only one prefix: 2862
ARIN Region transit ASes present in the Internet Routing Table: 787
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191331328
Equivalent to 11 /8s, 103 /16s and 124 /24s
Percentage of available ARIN address space announced: 71.3
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: 21583
Total RIPE prefixes after maximum aggregation: 15798
Prefixes being announced from the RIPE address blocks: 18142
Unique aggregates announced from the RIPE address blocks: 12055
RIPE Region origin ASes present in the Internet Routing Table: 4557
RIPE Region origin ASes announcing only one prefix: 2481
RIPE Region transit ASes present in the Internet Routing Table: 810
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 129880704
Equivalent to 7 /8s, 189 /16s and 210 /24s
Percentage of available RIPE address space announced: 70.4
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: 5303
Total LACNIC prefixes after maximum aggregation: 2229
Prefixes being announced from the LACNIC address blocks: 4753
Unique aggregates announced from the LACNIC address blocks: 2969
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: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12498944
Equivalent to 0 /8s, 190 /16s and 184 /24s
Percentage of available LACNIC address space announced: 37.2
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 1100 1104 787 Telstra Pty Ltd
4755 413 136 73 Videsh Sanchar Nigam Ltd. Aut
703 394 383 307 UUNET
2907 387 1992 364 SINET Japan
17557 372 26 142 Pakistan Telecom
2764 321 341 289 connect.com.au pty ltd
4814 297 85 23 China Telecom (Group)
7474 272 291 208 Optus Communications Pty Ltd
17676 245 3782 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 225 2022 115 Data Communications Bureau
9583 219 33 14 Satyam Infoway Ltd.,
4766 217 2478 163 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 136 57 125 Commerical Internet eXchange
9498 130 9 18 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1570 8938 1107 UUNET Technologies, Inc.
7018 1335 7143 925 AT&T
4151 1019 691 60 USDA
1239 971 3115 685 Sprint
7132 961 6475 207 Southwestern Bell Internet Se
3908 919 1570 471 Supernet, Inc.
1 731 2733 464 GENUITY
189 706 341 289 Genuity
7843 684 345 184 Adelphia Corp.
4323 587 514 169 Time Warner Communications, I
18566 550 144 5 Covad Communications
852 548 1110 431 Telus Advanced Communications
2386 546 484 271 AT&T Data Communications Serv
705 529 280 234 UUNET Technologies, Inc.
3561 506 2340 328 Cable & Wireless USA
209 498 2105 296 Qwest
690 487 71 317 Merit Network
7066 486 204 260 Virginia Polytechnic Institut
6197 478 340 196 BellSouth Network Solutions,
20115 476 191 296 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 759 2173 639 UUNET - Commercial IP service
3301 308 1173 298 TeliaNet Sweden
3215 304 852 174 France Telecom Transpac
3320 266 2004 227 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 226 327 188 SWIPnet Swedish IP Network
5400 206 112 114 BT Ignite European Backbone
8220 199 364 188 COLT Internet - International
719 193 307 125 LANLINK autonomous system
5515 187 779 160 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 162 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 123 1299 112 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 102 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 289 98 105 ImpSat
7303 255 36 65 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 166 66 36 Servicios Alestra S.A de C.V
6503 141 206 101 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 96 3 30 Red Universitaria Nacional
6147 91 62 20 Telefonica Del Peru
11992 88 8 37 Integrated Systems
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
6535 72 5 21 Chilesat Servicios Empresari
8065 72 6 15 Empresas Publicas de Medellin
15311 72 28 36 Telefonica Empresas
11830 68 5 27 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1019 959 USDA
7132 961 754 Southwestern Bell Internet Se
18566 550 545 Covad Communications
7843 684 500 Adelphia Corp.
3908 919 448 Supernet, Inc.
4323 587 418 Time Warner Communications, I
189 706 417 Genuity
7018 1335 410 AT&T
4755 413 340 Videsh Sanchar Nigam Ltd. Aut
1221 1100 313 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 369 289 SAVVIS Communications Corpora
1239 971 286 Sprint
6198 458 283 BellSouth Network Solutions,
6197 478 282 BellSouth Network Solutions,
4355 381 281 EarthLink, Inc.
22927 289 276 TELEFONICA DE ARGENTINA
2386 546 275 AT&T Data Communications Serv
4814 297 274 China Telecom (Group)
1 731 267 GENUITY
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
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 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
192.158.254.0/24 705 UUNET Technologies, Inc.
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 /8:17 /9:7 /10:8 /11:13 /12:51
/13:93 /14:253 /15:465 /16:7405 /17:1673 /18:2971
/19:8385 /20:8363 /21:5994 /22:8963 /23:10540 /24:69633
/25:157 /26:182 /27:46 /28:25 /29:13 /30:22
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 575 919 Supernet, Inc.
18566 544 550 Covad Communications
702 467 759 UUNET - Commercial IP service
7018 466 1335 AT&T
7843 452 684 Adelphia Corp.
690 436 487 Merit Network
701 435 1570 UUNET Technologies, Inc.
7066 383 486 Virginia Polytechnic Institut
1239 364 971 Sprint
6198 360 458 BellSouth Network Solutions,
6197 356 478 BellSouth Network Solutions,
20115 340 476 Charter Communications
2386 327 546 AT&T Data Communications Serv
4814 284 297 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 254 731 GENUITY
3215 227 304 France Telecom Transpac
22927 227 289 TELEFONICA DE ARGENTINA
705 219 529 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:692 13:1 15:4 17:3 20:8 24:816
25:1 32:87 38:121 40:19 44:2 55:1
57:16 61:440 62:539 63:1888 64:1568 65:1932
66:2444 67:164 68:372 69:121 80:360 81:154
128:151 129:178 130:44 131:81 132:11 133:2
134:153 135:4 136:112 137:106 138:109 139:67
140:151 141:110 142:97 143:44 144:104 145:17
146:268 147:94 148:283 149:73 150:44 151:78
152:244 153:55 154:2 155:108 156:46 157:42
158:126 159:148 160:36 161:74 162:144 163:76
164:307 165:143 166:94 167:332 168:395 169:57
170:308 171:7 192:5346 193:2423 194:1985 195:1014
196:460 198:3561 199:3694 200:2960 202:3787 203:5199
204:3041 205:2030 206:2376 207:2409 208:2621 209:2859
210:776 211:318 212:969 213:817 214:20 215:21
216:3226 217:638 218:90 219:21 220:94
End of report
