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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 15 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125892
Prefixes after maximum aggregation: 78524
Unique aggregates announced to Internet: 59261
Total ASes present in the Internet Routing Table: 15172
Origin-only ASes present in the Internet Routing Table: 13138
Origin ASes announcing only one prefix: 5970
Transit ASes present in the Internet Routing Table: 2034
Transit-only ASes present in the Internet Routing Table: 73
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: 18
Number of addresses announced to Internet: 1230159168
Equivalent to 73 /8s, 82 /16s and 189 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54643
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21359
Total APNIC prefixes after maximum aggregation: 12396
Prefixes being announced from the APNIC address blocks: 19811
Unique aggregates announced from the APNIC address blocks: 12049
APNIC Region origin ASes present in the Internet Routing Table: 1800
APNIC Region origin ASes announcing only one prefix: 524
APNIC Region transit ASes present in the Internet Routing Table: 305
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 113244448
Equivalent to 6 /8s, 191 /16s and 249 /24s
Percentage of available APNIC address space announced: 61.0
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: 77494
Total ARIN prefixes after maximum aggregation: 48008
Prefixes being announced from the ARIN address blocks: 55556
Unique aggregates announced from the ARIN address blocks: 16528
ARIN Region origin ASes present in the Internet Routing Table: 8387
ARIN Region origin ASes announcing only one prefix: 2871
ARIN Region transit ASes present in the Internet Routing Table: 810
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191743488
Equivalent to 11 /8s, 109 /16s and 198 /24s
Percentage of available ARIN address space announced: 71.4
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: 21679
Total RIPE prefixes after maximum aggregation: 15874
Prefixes being announced from the RIPE address blocks: 18191
Unique aggregates announced from the RIPE address blocks: 12065
RIPE Region origin ASes present in the Internet Routing Table: 4579
RIPE Region origin ASes announcing only one prefix: 2490
RIPE Region transit ASes present in the Internet Routing Table: 816
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 130453888
Equivalent to 7 /8s, 198 /16s and 145 /24s
Percentage of available RIPE address space announced: 70.7
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
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: 5359
Total LACNIC prefixes after maximum aggregation: 2246
Prefixes being announced from the LACNIC address blocks: 4782
Unique aggregates announced from the LACNIC address blocks: 2980
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12575488
Equivalent to 0 /8s, 191 /16s and 227 /24s
Percentage of available LACNIC address space announced: 37.5
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 1081 1103 768 Telstra Pty Ltd
4755 412 133 71 Videsh Sanchar Nigam Ltd. Aut
2907 386 1976 363 SINET Japan
17557 372 26 147 Pakistan Telecom
703 369 380 296 UUNET
2764 318 342 282 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 272 291 206 Optus Communications Pty Ltd
17676 247 3814 19 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 226 2038 116 Data Communications Bureau
9583 223 34 17 Satyam Infoway Ltd.,
4766 214 2475 160 Korea Internet Exchange for "
9443 184 58 83 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
9238 139 8 17 TATA ISP
4739 136 57 125 Commerical Internet eXchange
9498 134 9 14 BHARTI BT INTERNET LTD.
4716 128 729 122 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1566 8936 1104 UUNET Technologies, Inc.
7018 1326 7150 919 AT&T
4151 1134 691 60 USDA
7132 966 6476 209 Southwestern Bell Internet Se
1239 941 3010 661 Sprint
3908 924 1573 477 Supernet, Inc.
189 704 341 287 Genuity
1 680 2698 464 GENUITY
7843 666 347 175 Adelphia Corp.
4323 588 514 169 Time Warner Communications, I
18566 577 160 8 Covad Communications
2386 571 484 269 AT&T Data Communications Serv
852 538 1155 423 Telus Advanced Communications
705 533 286 237 UUNET Technologies, Inc.
3561 507 2340 329 Cable & Wireless USA
209 492 2105 296 Qwest
7066 486 204 260 Virginia Polytechnic Institut
6197 483 341 194 BellSouth Network Solutions,
690 481 69 314 Merit Network
20115 473 194 287 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 762 2173 642 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 306 1157 296 TeliaNet Sweden
3215 301 852 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
719 216 307 125 LANLINK autonomous system
8220 216 368 205 COLT Internet - International
5400 203 112 114 BT Ignite European Backbone
5515 182 795 153 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 151 44 145 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 122 1299 112 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 113 383 110 Song Networks
3352 107 748 30 Ibernet, Internet Access Netw
2874 97 85 38 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 98 107 ImpSat
7303 255 36 64 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 139 205 99 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 93 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 78 8 16 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
6535 73 5 22 Chilesat Servicios Empresari
15311 71 12 35 Telefonica Empresas
4270 67 18 9 Red de Interconexion Universi
7738 66 186 12 Telecomunicacoes da Bahia S.A
11830 66 4 27 Instituto Costarricense de El
7927 65 5 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1134 1074 USDA
7132 966 757 Southwestern Bell Internet Se
18566 577 569 Covad Communications
7843 666 491 Adelphia Corp.
3908 924 447 Supernet, Inc.
4323 588 419 Time Warner Communications, I
189 704 417 Genuity
7018 1326 407 AT&T
4755 412 341 Videsh Sanchar Nigam Ltd. Aut
1221 1081 313 Telstra Pty Ltd
2386 571 302 AT&T Data Communications Serv
705 533 296 UUNET Technologies, Inc.
4355 395 291 EarthLink, Inc.
6197 483 289 BellSouth Network Solutions,
6347 368 289 SAVVIS Communications Corpora
6198 462 286 BellSouth Network Solutions,
1239 941 280 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 294 274 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
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
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 /12:51
/13:95 /14:252 /15:470 /16:7419 /17:1683 /18:2974
/19:8436 /20:8402 /21:6023 /22:9005 /23:10676 /24:69847
/25:160 /26:216 /27:52 /28:25 /29:13 /30:23
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 704 Genuity
3908 580 924 Supernet, Inc.
18566 571 577 Covad Communications
702 470 762 UUNET - Commercial IP service
7018 464 1326 AT&T
701 436 1566 UUNET Technologies, Inc.
690 431 481 Merit Network
7843 429 666 Adelphia Corp.
7066 383 486 Virginia Polytechnic Institut
6198 361 462 BellSouth Network Solutions,
6197 360 483 BellSouth Network Solutions,
2386 353 571 AT&T Data Communications Serv
1239 352 941 Sprint
20115 334 473 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 252 680 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 224 301 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:700 13:1 15:4 16:1 17:3 20:8
24:826 25:1 32:87 38:120 40:19 44:2
55:1 57:16 61:447 62:578 63:1866 64:1656
65:1926 66:2428 67:171 68:378 69:126 80:347
81:126 128:146 129:178 130:45 131:80 132:11
133:1 134:146 135:4 136:115 137:109 138:108
139:64 140:134 141:113 142:98 143:44 144:100
145:14 146:269 147:95 148:289 149:71 150:43
151:77 152:244 153:57 154:3 155:109 156:46
157:40 158:127 159:147 160:37 161:73 162:141
163:77 164:309 165:142 166:95 167:335 168:399
169:63 170:303 171:7 192:5312 193:2439 194:1979
195:1047 196:462 198:3565 199:3788 200:2970 202:3794
203:5220 204:3008 205:2057 206:2376 207:2391 208:2622
209:2868 210:781 211:326 212:931 213:801 214:20
215:23 216:3288 217:619 218:90 219:28 220:94
221:2
End of report
