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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 10 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123963
Prefixes after maximum aggregation: 78387
Unique aggregates announced to Internet: 59125
Total ASes present in the Internet Routing Table: 14955
Origin-only ASes present in the Internet Routing Table: 12961
Origin ASes announcing only one prefix: 5873
Transit ASes present in the Internet Routing Table: 1994
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: 22
Number of addresses announced to Internet: 1223668768
Equivalent to 72 /8s, 239 /16s and 180 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 58472
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20734
Total APNIC prefixes after maximum aggregation: 12232
Prefixes being announced from the APNIC address blocks: 19103
Unique aggregates announced from the APNIC address blocks: 11825
APNIC Region origin ASes present in the Internet Routing Table: 1763
APNIC Region origin ASes announcing only one prefix: 520
APNIC Region transit ASes present in the Internet Routing Table: 287
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109673472
Equivalent to 6 /8s, 137 /16s and 124 /24s
Percentage of available APNIC address space announced: 59.1
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: 76564
Total ARIN prefixes after maximum aggregation: 48200
Prefixes being announced from the ARIN address blocks: 54802
Unique aggregates announced from the ARIN address blocks: 16704
ARIN Region origin ASes present in the Internet Routing Table: 8292
ARIN Region origin ASes announcing only one prefix: 2813
ARIN Region transit ASes present in the Internet Routing Table: 798
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190123008
Equivalent to 11 /8s, 85 /16s and 12 /24s
Percentage of available ARIN address space announced: 70.8
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: 21356
Total RIPE prefixes after maximum aggregation: 15739
Prefixes being announced from the RIPE address blocks: 17855
Unique aggregates announced from the RIPE address blocks: 11951
RIPE Region origin ASes present in the Internet Routing Table: 4498
RIPE Region origin ASes announcing only one prefix: 2455
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: 16
Number of RIPE addresses announced to Internet: 128812288
Equivalent to 7 /8s, 173 /16s and 133 /24s
Percentage of available RIPE address space announced: 76.8
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: 5307
Total LACNIC prefixes after maximum aggregation: 2216
Prefixes being announced from the LACNIC address blocks: 4685
Unique aggregates announced from the LACNIC address blocks: 2962
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 85
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: 15
Number of LACNIC addresses announced to Internet: 12425216
Equivalent to 0 /8s, 189 /16s and 152 /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 1100 1105 791 Telstra Pty Ltd
703 401 368 315 UUNET
2907 379 1974 358 SINET Japan
17557 379 28 140 Pakistan Telecom
2764 321 341 289 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 238 3670 25 XTAGE CORPORATION
4755 236 135 75 Videsh Sanchar Nigam Ltd. Aut
4134 233 1999 122 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 174 236 52 CHINA UNICOM
9238 141 8 18 TATA ISP
4716 128 731 122 TTnet
4739 128 57 117 Commerical Internet eXchange
9498 126 9 10 BHARTI BT INTERNET LTD.
2915 125 123 30 AT&T Jens Corporation
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1581 8890 1116 UUNET Technologies, Inc.
7018 1359 7171 940 AT&T
1239 966 3119 680 Sprint
3908 932 1571 476 Supernet, Inc.
1 770 2846 493 GENUITY
7132 764 6107 410 Southwestern Bell Internet Se
189 706 341 291 Genuity
4151 670 691 58 USDA
7843 643 401 163 Adelphia Corp.
3561 587 2351 338 Cable & Wireless USA
4323 567 498 165 Time Warner Communications, I
852 547 1106 432 Telus Advanced Communications
18566 538 128 6 Covad Communications
209 536 2140 302 Qwest
2386 507 482 274 AT&T Data Communications Serv
690 502 73 318 Merit Network
705 488 229 216 UUNET Technologies, Inc.
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 457 226 177 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 315 851 175 France Telecom Transpac
3301 310 1174 300 TeliaNet Sweden
3320 269 1997 231 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5400 195 92 109 BT Ignite European Backbone
5515 195 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8220 168 282 158 COLT Internet - International
20858 161 17 3 This AS will be used to conne
8708 154 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 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 294 99 105 ImpSat
7303 243 36 57 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
11340 109 3 37 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 90 9 36 Integrated Systems
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
8065 74 6 15 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
7927 65 5 40 Global One Venezuela
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7984 61 11 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 670 612 USDA
18566 538 532 Covad Communications
7843 643 480 Adelphia Corp.
3908 932 456 Supernet, Inc.
7018 1359 419 AT&T
189 706 415 Genuity
4323 567 402 Time Warner Communications, I
7132 764 354 Southwestern Bell Internet Se
1221 1100 309 Telstra Pty Ltd
6347 369 288 SAVVIS Communications Corpora
1239 966 286 Sprint
6197 476 280 BellSouth Network Solutions,
6198 457 280 BellSouth Network Solutions,
1 770 277 GENUITY
705 488 272 UUNET Technologies, Inc.
22927 286 272 TELEFONICA DE ARGENTINA
4355 372 271 EarthLink, Inc.
4814 270 255 China Telecom (Group)
3561 587 249 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
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
192.16.52.0/24 1239 Sprint
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.75.199.0/24 25745 Alentus Corporation
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 /9:5 /10:8 /11:13 /12:47
/13:92 /14:250 /15:464 /16:7390 /17:1640 /18:2947
/19:8302 /20:8204 /21:5914 /22:8847 /23:10626 /24:68608
/25:185 /26:186 /27:56 /28:35 /29:20 /30:59
/31:0 /32:47
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 592 932 Supernet, Inc.
18566 532 538 Covad Communications
702 485 779 UUNET - Commercial IP service
7018 475 1359 AT&T
701 467 1581 UUNET Technologies, Inc.
690 451 502 Merit Network
7843 391 643 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 368 966 Sprint
6198 361 457 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 302 507 AT&T Data Communications Serv
20115 299 426 Charter Communications
22927 285 286 TELEFONICA DE ARGENTINA
6140 281 294 ImpSat
1 272 770 GENUITY
27364 259 266 Armstrong Cable Services
7303 242 243 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:676 13:1 15:4 17:2 20:9
24:801 25:1 32:86 38:64 40:18 44:2
55:1 57:17 61:404 62:519 63:1880 64:1558
65:1909 66:2332 67:161 68:329 69:100 80:329
81:120 128:150 129:180 130:45 131:81 132:11
133:2 134:150 135:4 136:113 137:111 138:106
139:66 140:148 141:88 142:94 143:47 144:112
145:16 146:268 147:93 148:277 149:71 150:46
151:68 152:250 153:53 154:2 155:107 156:46
157:46 158:125 159:140 160:34 161:60 162:122
163:78 164:311 165:197 166:75 167:326 168:395
169:56 170:316 171:7 192:5353 193:2416 194:1994
195:988 196:472 198:3558 199:3365 200:2911 202:3670
203:5054 204:3069 205:2017 206:2431 207:2418 208:2656
209:2874 210:742 211:337 212:988 213:759 214:20
215:21 216:3291 217:636 218:84 219:13 220:54
End of report
