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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 22 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124562
Prefixes after maximum aggregation: 78121
Unique aggregates announced to Internet: 58912
Total ASes present in the Internet Routing Table: 15039
Origin-only ASes present in the Internet Routing Table: 13047
Origin ASes announcing only one prefix: 5924
Transit ASes present in the Internet Routing Table: 1992
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1224782336
Equivalent to 73 /8s, 0 /16s and 178 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 53967
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21041
Total APNIC prefixes after maximum aggregation: 12251
Prefixes being announced from the APNIC address blocks: 19475
Unique aggregates announced from the APNIC address blocks: 11899
APNIC Region origin ASes present in the Internet Routing Table: 1776
APNIC Region origin ASes announcing only one prefix: 518
APNIC Region transit ASes present in the Internet Routing Table: 296
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110459360
Equivalent to 6 /8s, 149 /16s and 121 /24s
Percentage of available APNIC address space announced: 59.5
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: 76863
Total ARIN prefixes after maximum aggregation: 47893
Prefixes being announced from the ARIN address blocks: 54996
Unique aggregates announced from the ARIN address blocks: 16389
ARIN Region origin ASes present in the Internet Routing Table: 8333
ARIN Region origin ASes announcing only one prefix: 2851
ARIN Region transit ASes present in the Internet Routing Table: 790
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190800896
Equivalent to 11 /8s, 95 /16s and 100 /24s
Percentage of available ARIN address space announced: 71.1
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: 15756
Prefixes being announced from the RIPE address blocks: 17914
Unique aggregates announced from the RIPE address blocks: 12033
RIPE Region origin ASes present in the Internet Routing Table: 4525
RIPE Region origin ASes announcing only one prefix: 2466
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129139840
Equivalent to 7 /8s, 178 /16s and 132 /24s
Percentage of available RIPE address space announced: 70.0
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: 5291
Total LACNIC prefixes after maximum aggregation: 2221
Prefixes being announced from the LACNIC address blocks: 4717
Unique aggregates announced from the LACNIC address blocks: 2977
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 89
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12437504
Equivalent to 0 /8s, 189 /16s and 200 /24s
Percentage of available LACNIC address space announced: 37.1
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 1097 1104 787 Telstra Pty Ltd
4755 411 136 75 Videsh Sanchar Nigam Ltd. Aut
703 396 381 310 UUNET
2907 384 1976 361 SINET Japan
17557 374 28 137 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 274 80 16 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 243 3750 22 XTAGE CORPORATION
4134 226 2022 115 Data Communications Bureau
9583 219 33 13 Satyam Infoway Ltd.,
4766 213 2078 158 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1587 8924 1109 UUNET Technologies, Inc.
7018 1365 7175 944 AT&T
1239 971 3120 686 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 939 1571 479 Supernet, Inc.
4151 838 691 60 USDA
1 739 2769 472 GENUITY
189 705 341 290 Genuity
7843 680 402 178 Adelphia Corp.
4323 573 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 511 483 269 AT&T Data Communications Serv
3561 507 2341 331 Cable & Wireless USA
209 496 2120 299 Qwest
690 494 72 312 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 481 340 196 BellSouth Network Solutions,
6198 458 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 773 2186 644 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 306 1173 296 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 200 98 111 BT Ignite European Backbone
8220 198 364 187 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 157 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 107 750 31 Ibernet, Internet Access Netw
2874 95 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 247 36 65 Telecom Argentina Stet-France
8151 216 334 118 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 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 88 8 36 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 74 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 25 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 838 778 USDA
7132 959 750 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 680 502 Adelphia Corp.
3908 939 460 Supernet, Inc.
7018 1365 421 AT&T
189 705 415 Genuity
4323 573 404 Time Warner Communications, I
4755 411 336 Videsh Sanchar Nigam Ltd. Aut
1221 1097 310 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 367 288 SAVVIS Communications Corpora
1239 971 285 Sprint
6197 481 285 BellSouth Network Solutions,
6198 458 283 BellSouth Network Solutions,
22927 296 282 TELEFONICA DE ARGENTINA
4355 384 275 EarthLink, Inc.
1 739 267 GENUITY
4814 274 258 China Telecom (Group)
27364 270 252 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
192.83.16.0/20 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
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 /9:4 /10:8 /11:13 /12:50
/13:93 /14:252 /15:464 /16:7384 /17:1670 /18:2972
/19:8349 /20:8312 /21:5991 /22:8891 /23:10586 /24:69007
/25:163 /26:193 /27:52 /28:25 /29:13 /30:24
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 595 939 Supernet, Inc.
18566 535 541 Covad Communications
7018 481 1365 AT&T
702 480 773 UUNET - Commercial IP service
690 443 494 Merit Network
701 440 1587 UUNET Technologies, Inc.
7843 425 680 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 366 971 Sprint
6198 361 458 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 306 511 AT&T Data Communications Serv
4814 264 274 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 739 GENUITY
3215 235 312 France Telecom Transpac
22927 235 296 TELEFONICA DE ARGENTINA
20115 225 346 Charter Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:677 13:1 15:4 17:3 20:8 24:781
25:1 32:84 38:65 40:18 44:2 55:1
57:16 61:428 62:525 63:1894 64:1532 65:1927
66:2364 67:166 68:359 69:111 80:338 81:120
128:155 129:177 130:45 131:82 132:11 133:2
134:153 135:4 136:112 137:105 138:108 139:66
140:147 141:93 142:95 143:45 144:112 145:14
146:270 147:94 148:277 149:72 150:44 151:68
152:246 153:57 154:2 155:107 156:45 157:40
158:124 159:144 160:38 161:75 162:137 163:76
164:313 165:137 166:84 167:329 168:406 169:57
170:317 171:7 192:5347 193:2405 194:1995 195:995
196:461 198:3553 199:3529 200:2943 202:3744 203:5163
204:3073 205:2001 206:2404 207:2398 208:2650 209:2810
210:752 211:339 212:960 213:791 214:17 215:21
216:3352 217:624 218:86 219:20 220:57
End of report
