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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 05 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125269
Prefixes after maximum aggregation: 78345
Unique aggregates announced to Internet: 57987
Total ASes present in the Internet Routing Table: 15123
Origin-only ASes present in the Internet Routing Table: 13125
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: 1217547264
Equivalent to 72 /8s, 146 /16s and 76 /24s
Percentage of available address space announced: 32.8
Percentage of allocated address space announced: 58.7
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54336
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21222
Total APNIC prefixes after maximum aggregation: 12328
Prefixes being announced from the APNIC address blocks: 19660
Unique aggregates announced from the APNIC address blocks: 12013
APNIC Region origin ASes present in the Internet Routing Table: 1790
APNIC Region origin ASes announcing only one prefix: 523
APNIC Region transit ASes present in the Internet Routing Table: 299
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 112664800
Equivalent to 6 /8s, 183 /16s and 32 /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: 77177
Total ARIN prefixes after maximum aggregation: 47988
Prefixes being announced from the ARIN address blocks: 55187
Unique aggregates announced from the ARIN address blocks: 16459
ARIN Region origin ASes present in the Internet Routing Table: 8370
ARIN Region origin ASes announcing only one prefix: 2862
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191352576
Equivalent to 11 /8s, 103 /16s and 207 /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: 21571
Total RIPE prefixes after maximum aggregation: 15807
Prefixes being announced from the RIPE address blocks: 18131
Unique aggregates announced from the RIPE address blocks: 10924
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: 807
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 135909248
Equivalent to 8 /8s, 25 /16s and 207 /24s
Percentage of available RIPE address space announced: 73.6
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: 5298
Total LACNIC prefixes after maximum aggregation: 2222
Prefixes being announced from the LACNIC address blocks: 4751
Unique aggregates announced from the LACNIC address blocks: 2982
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: 12502272
Equivalent to 0 /8s, 190 /16s and 197 /24s
Percentage of available LACNIC address space announced: 37.3
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 1106 1105 790 Telstra Pty Ltd
4755 414 136 73 Videsh Sanchar Nigam Ltd. Aut
703 394 383 307 UUNET
2907 385 1976 362 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 220 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 1569 8906 1105 UUNET Technologies, Inc.
7018 1333 7127 923 AT&T
4151 1019 691 60 USDA
1239 969 3114 685 Sprint
7132 961 6475 207 Southwestern Bell Internet Se
3908 917 1570 471 Supernet, Inc.
1 728 2733 461 GENUITY
189 706 341 289 Genuity
7843 679 349 174 Adelphia Corp.
4323 584 514 169 Time Warner Communications, I
18566 553 144 7 Covad Communications
2386 546 484 271 AT&T Data Communications Serv
852 540 1110 432 Telus Advanced Communications
705 529 281 234 UUNET Technologies, Inc.
3561 506 2340 328 Cable & Wireless USA
209 497 2105 295 Qwest
690 486 70 317 Merit Network
7066 485 204 260 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
702 758 2172 638 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 200 365 189 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 140 206 100 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 36 Integrated Systems
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
8065 73 7 14 Empresas Publicas de Medellin
6535 72 5 21 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
4270 67 18 9 Red de Interconexion Universi
11830 67 5 27 Instituto Costarricense de El
7927 65 5 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
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 553 546 Covad Communications
7843 679 505 Adelphia Corp.
3908 917 446 Supernet, Inc.
189 706 417 Genuity
4323 584 415 Time Warner Communications, I
7018 1333 410 AT&T
4755 414 341 Videsh Sanchar Nigam Ltd. Aut
1221 1106 316 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 369 289 SAVVIS Communications Corpora
1239 969 284 Sprint
6198 459 284 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)
1 728 267 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 /8:19 /9:5 /10:8 /11:13 /12:51
/13:93 /14:253 /15:465 /16:7403 /17:1674 /18:2973
/19:8384 /20:8365 /21:5989 /22:8958 /23:10563 /24:69583
/25:155 /26:182 /27:47 /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 573 917 Supernet, Inc.
18566 547 553 Covad Communications
702 466 758 UUNET - Commercial IP service
7018 466 1333 AT&T
7843 444 679 Adelphia Corp.
690 435 486 Merit Network
701 435 1569 UUNET Technologies, Inc.
7066 382 485 Virginia Polytechnic Institut
1239 361 969 Sprint
6198 361 459 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
1 254 728 GENUITY
3215 227 304 France Telecom Transpac
22927 227 289 TELEFONICA DE ARGENTINA
705 220 529 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:694 13:1 15:4 17:3 20:8 24:815
25:1 32:87 38:121 40:19 44:2 55:1
57:16 61:440 62:541 63:1888 64:1576 65:1929
66:2447 67:165 68:369 69:121 80:357 81:155
128:152 129:178 130:44 131:81 132:11 133:2
134:152 135:4 136:113 137:106 138:109 139:66
140:148 141:110 142:98 143:44 144:103 145:17
146:269 147:94 148:287 149:72 150:44 151:78
152:244 153:55 154:2 155:107 156:46 157:42
158:126 159:148 160:37 161:74 162:143 163:75
164:306 165:143 166:94 167:332 168:397 169:57
170:309 171:7 192:5344 193:2417 194:1982 195:1012
196:458 198:3559 199:3683 200:2957 202:3791 203:5180
204:3032 205:2037 206:2359 207:2407 208:2620 209:2869
210:777 211:323 212:973 213:818 214:20 215:21
216:3219 217:634 218:90 219:21 220:94
End of report
