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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 12 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123503
Prefixes after maximum aggregation: 77921
Unique aggregates announced to Internet: 58826
Total ASes present in the Internet Routing Table: 14969
Origin-only ASes present in the Internet Routing Table: 12980
Origin ASes announcing only one prefix: 5892
Transit ASes present in the Internet Routing Table: 1989
Transit-only ASes present in the Internet Routing Table: 72
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1206614528
Equivalent to 71 /8s, 235 /16s and 122 /24s
Percentage of available address space announced: 32.6
Percentage of allocated address space announced: 58.2
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 57973
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20674
Total APNIC prefixes after maximum aggregation: 12199
Prefixes being announced from the APNIC address blocks: 19182
Unique aggregates announced from the APNIC address blocks: 11868
APNIC Region origin ASes present in the Internet Routing Table: 1768
APNIC Region origin ASes announcing only one prefix: 520
APNIC Region transit ASes present in the Internet Routing Table: 289
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109839584
Equivalent to 6 /8s, 140 /16s and 4 /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: 76239
Total ARIN prefixes after maximum aggregation: 47776
Prefixes being announced from the ARIN address blocks: 54941
Unique aggregates announced from the ARIN address blocks: 16312
ARIN Region origin ASes present in the Internet Routing Table: 8295
ARIN Region origin ASes announcing only one prefix: 2828
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: 190377216
Equivalent to 11 /8s, 88 /16s and 237 /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: 21365
Total RIPE prefixes after maximum aggregation: 15745
Prefixes being announced from the RIPE address blocks: 17883
Unique aggregates announced from the RIPE address blocks: 12004
RIPE Region origin ASes present in the Internet Routing Table: 4502
RIPE Region origin ASes announcing only one prefix: 2457
RIPE Region transit ASes present in the Internet Routing Table: 809
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128999680
Equivalent to 7 /8s, 176 /16s and 97 /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: 5223
Total LACNIC prefixes after maximum aggregation: 2201
Prefixes being announced from the LACNIC address blocks: 4669
Unique aggregates announced from the LACNIC address blocks: 2962
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12428544
Equivalent to 0 /8s, 189 /16s and 165 /24s
Percentage of available LACNIC address space announced: 37.0
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 1102 1105 792 Telstra Pty Ltd
703 395 365 313 UUNET
2907 379 1974 358 SINET Japan
17557 379 28 143 Pakistan Telecom
2764 323 341 291 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 270 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
17676 239 3686 26 XTAGE CORPORATION
4134 235 1999 122 Data Communications Bureau
4755 232 135 74 Videsh Sanchar Nigam Ltd. Aut
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 129 57 118 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1600 8895 1124 UUNET Technologies, Inc.
7018 1360 7172 941 AT&T
1239 971 3120 684 Sprint
3908 934 1571 476 Supernet, Inc.
7132 806 6313 185 Southwestern Bell Internet Se
1 772 2846 493 GENUITY
189 706 341 291 Genuity
4151 701 691 58 USDA
7843 646 401 163 Adelphia Corp.
3561 585 2351 337 Cable & Wireless USA
4323 568 498 165 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 540 128 6 Covad Communications
209 535 2140 303 Qwest
2386 508 482 269 AT&T Data Communications Serv
690 495 73 316 Merit Network
705 487 229 215 UUNET Technologies, Inc.
7066 484 204 254 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 196 97 110 BT Ignite European Backbone
5515 196 779 168 Sonera Solution Autonomous Sy
719 195 307 125 LANLINK autonomous system
786 179 1858 179 The JANET IP Service
8220 169 298 159 COLT Internet - International
20858 161 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 144 517 143 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 241 35 64 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
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 73 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 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
15034 60 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 701 643 USDA
7132 806 621 Southwestern Bell Internet Se
18566 540 534 Covad Communications
7843 646 483 Adelphia Corp.
3908 934 458 Supernet, Inc.
7018 1360 419 AT&T
189 706 415 Genuity
4323 568 403 Time Warner Communications, I
1221 1102 310 Telstra Pty Ltd
1239 971 287 Sprint
6347 367 286 SAVVIS Communications Corpora
6198 455 281 BellSouth Network Solutions,
22927 295 281 TELEFONICA DE ARGENTINA
6197 476 280 BellSouth Network Solutions,
1 772 279 GENUITY
705 487 272 UUNET Technologies, Inc.
4355 373 272 EarthLink, Inc.
4814 270 255 China Telecom (Group)
3561 585 248 Cable & Wireless USA
27364 266 248 Armstrong Cable Services
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
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 /8:17 /9:5 /10:8 /11:13 /12:50
/13:93 /14:250 /15:463 /16:7357 /17:1634 /18:2942
/19:8300 /20:8203 /21:5902 /22:8815 /23:10584 /24:68414
/25:122 /26:172 /27:42 /28:26 /29:13 /30:42
/31:0 /32:36
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 593 934 Supernet, Inc.
18566 534 540 Covad Communications
702 485 779 UUNET - Commercial IP service
701 480 1600 UUNET Technologies, Inc.
7018 476 1360 AT&T
690 444 495 Merit Network
7843 393 646 Adelphia Corp.
7066 383 484 Virginia Polytechnic Institut
1239 371 971 Sprint
6198 359 455 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 304 508 AT&T Data Communications Serv
20115 299 426 Charter Communications
22927 294 295 TELEFONICA DE ARGENTINA
6140 281 294 ImpSat
1 272 772 GENUITY
27364 259 266 Armstrong Cable Services
7303 240 241 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:677 13:1 15:4 17:3 20:9
24:801 25:1 32:86 38:63 40:18 44:2
55:1 57:17 61:407 62:518 63:1882 64:1561
65:1920 66:2356 67:160 68:339 69:102 80:332
81:119 128:96 129:149 130:43 131:79 132:10
133:2 134:123 135:4 136:28 137:110 138:56
139:66 140:114 141:90 142:86 143:46 144:112
145:16 146:256 147:93 148:271 149:70 150:46
151:68 152:244 153:57 154:2 155:106 156:46
157:46 158:124 159:141 160:36 161:75 162:129
163:80 164:309 165:136 166:75 167:328 168:405
169:56 170:316 171:7 192:5344 193:2418 194:1989
195:994 196:463 198:3559 199:3395 200:2900 202:3680
203:5079 204:3073 205:2010 206:2432 207:2421 208:2662
209:2880 210:749 211:339 212:985 213:780 214:20
215:21 216:3301 217:636 218:85 219:12 220:55
End of report
