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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 06 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123418
Prefixes after maximum aggregation: 78246
Unique aggregates announced to Internet: 58986
Total ASes present in the Internet Routing Table: 14909
Origin-only ASes present in the Internet Routing Table: 12927
Origin ASes announcing only one prefix: 5843
Transit ASes present in the Internet Routing Table: 1982
Transit-only ASes present in the Internet Routing Table: 73
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: 1222388704
Equivalent to 72 /8s, 220 /16s and 43 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.5
Total number of prefixes smaller than registry allocations: 58145
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20560
Total APNIC prefixes after maximum aggregation: 12233
Prefixes being announced from the APNIC address blocks: 19060
Unique aggregates announced from the APNIC address blocks: 11808
APNIC Region origin ASes present in the Internet Routing Table: 1759
APNIC Region origin ASes announcing only one prefix: 519
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: 109193216
Equivalent to 6 /8s, 130 /16s and 40 /24s
Percentage of available APNIC address space announced: 64.7
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 76341
Total ARIN prefixes after maximum aggregation: 48114
Prefixes being announced from the ARIN address blocks: 54620
Unique aggregates announced from the ARIN address blocks: 16681
ARIN Region origin ASes present in the Internet Routing Table: 8276
ARIN Region origin ASes announcing only one prefix: 2801
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190164416
Equivalent to 11 /8s, 85 /16s and 173 /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: 21251
Total RIPE prefixes after maximum aggregation: 15692
Prefixes being announced from the RIPE address blocks: 17760
Unique aggregates announced from the RIPE address blocks: 11903
RIPE Region origin ASes present in the Internet Routing Table: 4473
RIPE Region origin ASes announcing only one prefix: 2439
RIPE Region transit ASes present in the Internet Routing Table: 806
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 128696320
Equivalent to 7 /8s, 171 /16s and 192 /24s
Percentage of available RIPE address space announced: 76.7
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: 5263
Total LACNIC prefixes after maximum aggregation: 2207
Prefixes being announced from the LACNIC address blocks: 4661
Unique aggregates announced from the LACNIC address blocks: 2950
LACNIC Region origin ASes present in the Internet Routing Table: 329
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12418560
Equivalent to 0 /8s, 189 /16s and 126 /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 1099 1105 802 Telstra Pty Ltd
703 396 367 314 UUNET
2907 379 1974 358 SINET Japan
17557 378 28 143 Pakistan Telecom
2764 318 340 286 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 269 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
4134 243 2115 128 Data Communications Bureau
17676 237 3654 25 XTAGE CORPORATION
4755 230 135 74 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 174 226 48 CHINA UNICOM
9238 136 8 17 TATA ISP
4739 128 57 117 Commerical Internet eXchange
4716 127 715 121 TTnet
9498 127 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 1580 8873 1116 UUNET Technologies, Inc.
7018 1346 7136 931 AT&T
3908 987 1572 476 Supernet, Inc.
1239 970 3119 684 Sprint
1 782 2846 492 GENUITY
7132 727 6084 408 Southwestern Bell Internet Se
189 706 341 291 Genuity
4151 628 691 58 USDA
7843 627 401 161 Adelphia Corp.
3561 588 2353 339 Cable & Wireless USA
4323 564 498 164 Time Warner Communications, I
852 550 1107 433 Telus Advanced Communications
18566 536 125 9 Covad Communications
209 531 2095 339 Qwest
2386 503 481 273 AT&T Data Communications Serv
690 502 73 318 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
705 458 188 202 UUNET Technologies, Inc.
6198 458 226 178 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 780 2221 647 UUNET - Commercial IP service
3215 316 851 175 France Telecom Transpac
3301 309 1174 299 TeliaNet Sweden
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 328 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5400 195 93 109 BT Ignite European Backbone
5515 195 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 157 17 3 This AS will be used to conne
8708 153 44 150 Romania Data Systems S.A.
3303 144 517 143 Swisscom Ltd
8220 137 215 128 COLT Internet - International
12302 122 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 113 755 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 295 99 106 ImpSat
7303 242 36 61 Telecom Argentina Stet-France
8151 215 333 117 UniNet S.A. de C.V.
11172 164 66 33 Servicios Alestra S.A de C.V
6503 152 207 107 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 90 9 36 Integrated Systems
6147 78 62 20 Telefonica Del Peru
1916 74 306 44 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 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 628 570 USDA
18566 536 527 Covad Communications
3908 987 511 Supernet, Inc.
7843 627 466 Adelphia Corp.
7018 1346 415 AT&T
189 706 415 Genuity
4323 564 400 Time Warner Communications, I
7132 727 319 Southwestern Bell Internet Se
1221 1099 297 Telstra Pty Ltd
1 782 290 GENUITY
6347 371 288 SAVVIS Communications Corpora
1239 970 286 Sprint
22927 295 281 TELEFONICA DE ARGENTINA
6197 476 280 BellSouth Network Solutions,
6198 458 280 BellSouth Network Solutions,
4355 380 278 EarthLink, Inc.
705 458 256 UUNET Technologies, Inc.
4814 269 254 China Telecom (Group)
3561 588 249 Cable & Wireless USA
27364 266 248 Armstrong Cable Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64500 RESERVED 192.83.252.0/24 297 NASA Science Network
1877 UNALLOCATED 192.108.199.0/24 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 /14:249 /15:463 /16:7375 /17:1642 /18:2955
/19:8259 /20:8195 /21:5901 /22:8820 /23:10608 /24:68194
/25:171 /26:191 /27:52 /28:34 /29:20 /30:60
/31:0 /32:46
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 623 987 Supernet, Inc.
18566 531 536 Covad Communications
702 484 780 UUNET - Commercial IP service
701 469 1580 UUNET Technologies, Inc.
7018 465 1346 AT&T
690 451 502 Merit Network
7066 384 485 Virginia Polytechnic Institut
7843 377 627 Adelphia Corp.
1239 372 970 Sprint
6198 362 458 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 299 503 AT&T Data Communications Serv
20115 299 426 Charter Communications
22927 294 295 TELEFONICA DE ARGENTINA
1 285 782 GENUITY
6140 282 295 ImpSat
27364 259 266 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:666 13:1 15:4 17:2 20:10
24:790 25:1 32:86 38:64 40:18 44:2
55:1 57:17 61:413 62:494 63:1889 64:1514
65:1908 66:2334 67:177 68:323 69:77 80:332
81:119 128:149 129:176 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:105
139:48 140:149 141:88 142:94 143:45 144:109
145:16 146:263 147:90 148:275 149:72 150:42
151:66 152:248 153:53 154:2 155:109 156:46
157:44 158:125 159:140 160:34 161:60 162:126
163:75 164:306 165:135 166:75 167:325 168:408
169:56 170:314 171:7 192:5342 193:2397 194:1991
195:998 196:466 198:3555 199:3308 200:2888 202:3657
203:5041 204:3064 205:2015 206:2424 207:2393 208:2668
209:2876 210:737 211:334 212:955 213:757 214:20
215:21 216:3283 217:610 218:83 219:11 220:57
End of report
