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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 05 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125717
Prefixes after maximum aggregation: 78841
Unique aggregates announced to Internet: 59220
Total ASes present in the Internet Routing Table: 15265
Origin-only ASes present in the Internet Routing Table: 13235
Origin ASes announcing only one prefix: 5979
Transit ASes present in the Internet Routing Table: 2030
Transit-only ASes present in the Internet Routing Table: 72
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1232835424
Equivalent to 73 /8s, 123 /16s and 147 /24s
Percentage of available address space announced: 33.3
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55407
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21727
Total APNIC prefixes after maximum aggregation: 12581
Prefixes being announced from the APNIC address blocks: 20125
Unique aggregates announced from the APNIC address blocks: 12111
APNIC Region origin ASes present in the Internet Routing Table: 1811
APNIC Region origin ASes announcing only one prefix: 523
APNIC Region transit ASes present in the Internet Routing Table: 297
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 114458272
Equivalent to 6 /8s, 210 /16s and 126 /24s
Percentage of available APNIC address space announced: 61.7
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: 77038
Total ARIN prefixes after maximum aggregation: 48044
Prefixes being announced from the ARIN address blocks: 55165
Unique aggregates announced from the ARIN address blocks: 16395
ARIN Region origin ASes present in the Internet Routing Table: 8437
ARIN Region origin ASes announcing only one prefix: 2872
ARIN Region transit ASes present in the Internet Routing Table: 820
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 192146944
Equivalent to 11 /8s, 115 /16s and 238 /24s
Percentage of available ARIN address space announced: 71.6
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: 21589
Total RIPE prefixes after maximum aggregation: 15955
Prefixes being announced from the RIPE address blocks: 18075
Unique aggregates announced from the RIPE address blocks: 12153
RIPE Region origin ASes present in the Internet Routing Table: 4611
RIPE Region origin ASes announcing only one prefix: 2498
RIPE Region transit ASes present in the Internet Routing Table: 815
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 131789312
Equivalent to 7 /8s, 218 /16s and 242 /24s
Percentage of available RIPE address space announced: 71.4
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: 2261
Prefixes being announced from the LACNIC address blocks: 4801
Unique aggregates announced from the LACNIC address blocks: 3029
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 86
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12646912
Equivalent to 0 /8s, 192 /16s and 250 /24s
Percentage of available LACNIC address space announced: 37.7
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 1076 1103 770 Telstra Pty Ltd
4755 418 134 72 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 350 SINET Japan
17557 358 25 146 Pakistan Telecom
703 343 371 273 UUNET
2764 312 341 278 connect.com.au pty ltd
4814 296 86 19 China Telecom (Group)
7474 268 290 202 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 238 2047 119 Data Communications Bureau
9583 230 34 18 Satyam Infoway Ltd.,
4766 212 2475 159 Korea Internet Exchange for "
9443 182 58 82 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 146 10 20 BHARTI BT INTERNET LTD.
4739 138 57 126 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 130 156 104 TANet2, sponsored by NSC, TAI
4716 128 745 122 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1553 8929 1093 UUNET Technologies, Inc.
7018 1338 7193 924 AT&T
7132 988 6475 207 Southwestern Bell Internet Se
1239 946 3018 665 Sprint
3908 920 1557 482 Supernet, Inc.
189 705 341 292 Genuity
11305 657 171 82 Interland Incorporated
1 636 2623 431 GENUITY
7843 611 350 176 Adelphia Corp.
4323 596 525 175 Time Warner Communications, I
18566 586 160 8 Covad Communications
852 523 1123 414 Telus Advanced Communications
705 511 273 334 UUNET Technologies, Inc.
2386 498 527 283 AT&T Data Communications Serv
209 493 2106 301 Qwest
6197 490 343 194 BellSouth Network Solutions,
7066 482 204 259 Virginia Polytechnic Institut
6198 465 230 177 BellSouth Network Solutions,
20115 462 194 283 Charter Communications
690 452 66 296 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 749 2173 636 UUNET - Commercial IP service
3301 302 1172 289 TeliaNet Sweden
3215 294 864 167 France Telecom Transpac
3320 265 2004 226 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 226 311 188 SWIPnet Swedish IP Network
5400 223 140 132 BT Ignite European Backbone
8220 223 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5515 181 795 152 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 152 44 149 Romania Data Systems S.A.
3303 140 549 137 Swisscom Ltd
8895 131 58 29 KACST/ISU Riyadh Autonomous S
12302 128 18 35 MobiFon S.A.
2856 124 1315 114 BTnet UK Regional network
3269 117 823 64 TELECOM ITALIA
3246 115 365 113 Song Networks
3352 109 780 32 Ibernet, Internet Access Netw
5511 95 177 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 98 110 ImpSat
7303 238 37 57 Telecom Argentina Stet-France
8151 214 350 117 UniNet S.A. de C.V.
11172 170 66 40 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 131 189 94 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 100 70 21 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 79 8 15 Empresas Publicas de Medellin
6535 74 5 23 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
13999 68 36 8 Mega Cable S.A. de C.V.
4270 67 18 9 Red de Interconexion Universi
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
15034 62 5 33 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 988 781 Southwestern Bell Internet Se
18566 586 578 Covad Communications
11305 657 575 Interland Incorporated
3908 920 438 Supernet, Inc.
7843 611 435 Adelphia Corp.
4323 596 421 Time Warner Communications, I
7018 1338 414 AT&T
189 705 413 Genuity
4755 418 346 Videsh Sanchar Nigam Ltd. Aut
1221 1076 306 Telstra Pty Ltd
27364 315 297 Armstrong Cable Services
6197 490 296 BellSouth Network Solutions,
4355 402 291 EarthLink, Inc.
6198 465 288 BellSouth Network Solutions,
6347 363 285 SAVVIS Communications Corpora
22927 298 285 TELEFONICA DE ARGENTINA
1239 946 281 Sprint
4814 296 277 China Telecom (Group)
376 379 264 Reseau Interordinateurs Scien
22909 274 264 Comcast Cable Corporation
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65516 PRIVATE 61.232.70.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.71.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.72.0/22 17621 China Netcom Corp.
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 /8:19 /9:5 /10:8 /11:13 /12:52
/13:98 /14:255 /15:469 /16:7421 /17:1682 /18:2978
/19:8441 /20:8493 /21:6141 /22:9052 /23:10616 /24:69433
/25:157 /26:216 /27:56 /28:40 /29:26 /30:21
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 628 705 Genuity
11305 583 657 Interland Incorporated
18566 580 586 Covad Communications
3908 575 920 Supernet, Inc.
7018 464 1338 AT&T
702 458 749 UUNET - Commercial IP service
701 436 1553 UUNET Technologies, Inc.
690 410 452 Merit Network
7066 379 482 Virginia Polytechnic Institut
7843 376 611 Adelphia Corp.
6197 366 490 BellSouth Network Solutions,
6198 363 465 BellSouth Network Solutions,
1239 354 946 Sprint
20115 323 462 Charter Communications
27364 308 315 Armstrong Cable Services
4814 281 296 China Telecom (Group)
2386 278 498 AT&T Data Communications Serv
22927 236 298 TELEFONICA DE ARGENTINA
1 234 636 GENUITY
3215 219 294 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:700 13:1 15:4 16:1 17:3
20:8 24:835 25:1 32:87 38:60 40:20
44:2 57:17 61:465 62:346 63:1861 64:1896
65:1958 66:2567 67:175 68:376 69:161 80:345
81:126 128:138 129:177 130:48 131:80 132:26
133:1 134:180 135:4 136:117 137:107 138:110
139:64 140:137 141:117 142:93 143:43 144:102
145:14 146:272 147:97 148:289 149:59 150:44
151:74 152:231 153:56 154:3 155:116 156:51
157:39 158:126 159:138 160:43 161:76 162:127
163:76 164:309 165:142 166:93 167:323 168:409
169:61 170:312 171:7 192:5321 193:2427 194:1953
195:1035 196:481 198:3561 199:2732 200:3004 202:3786
203:5241 204:2998 205:2029 206:2370 207:2408 208:2615
209:2895 210:826 211:334 212:1070 213:786 214:20
215:23 216:3530 217:622 218:85 219:39 220:92
221:2
End of report
