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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 08 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131480
Prefixes after maximum aggregation: 80867
Unique aggregates announced to Internet: 63254
Total ASes present in the Internet Routing Table: 16407
Origin-only ASes present in the Internet Routing Table: 14236
Origin ASes announcing only one prefix: 6534
Transit ASes present in the Internet Routing Table: 2171
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 30
Illegal AS announcements present in the Routing Table: 5
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1275771172
Equivalent to 76 /8s, 10 /16s and 185 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 57.3
Total number of prefixes smaller than registry allocations: 57974
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24228
Total APNIC prefixes after maximum aggregation: 13055
Prefixes being announced from the APNIC address blocks: 22714
Unique aggregates announced from the APNIC address blocks: 12896
APNIC Region origin ASes present in the Internet Routing Table: 1968
APNIC Region origin ASes announcing only one prefix: 578
APNIC Region transit ASes present in the Internet Routing Table: 312
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 133901440
Equivalent to 7 /8s, 251 /16s and 44 /24s
Percentage of available APNIC address space announced: 72.1
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: 77400
Total ARIN prefixes after maximum aggregation: 47850
Prefixes being announced from the ARIN address blocks: 59930
Unique aggregates announced from the ARIN address blocks: 20749
ARIN Region origin ASes present in the Internet Routing Table: 8828
ARIN Region origin ASes announcing only one prefix: 3097
ARIN Region transit ASes present in the Internet Routing Table: 844
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 213350304
Equivalent to 12 /8s, 183 /16s and 119 /24s
Percentage of available ARIN address space announced: 74.8
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
31744 - 32767
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 23298
Total RIPE prefixes after maximum aggregation: 17095
Prefixes being announced from the RIPE address blocks: 20157
Unique aggregates announced from the RIPE address blocks: 13417
RIPE Region origin ASes present in the Internet Routing Table: 5080
RIPE Region origin ASes announcing only one prefix: 2728
RIPE Region transit ASes present in the Internet Routing Table: 895
Average RIPE Region AS path length visible: 5.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 148213376
Equivalent to 8 /8s, 213 /16s and 142 /24s
Percentage of available RIPE address space announced: 68.0
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
30720 - 31743
RIPE Address Blocks 62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5396
Total LACNIC prefixes after maximum aggregation: 2186
Prefixes being announced from the LACNIC address blocks: 5018
Unique aggregates announced from the LACNIC address blocks: 3130
LACNIC Region origin ASes present in the Internet Routing Table: 364
LACNIC Region origin ASes announcing only one prefix: 104
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 13878272
Equivalent to 0 /8s, 211 /16s and 196 /24s
Percentage of available LACNIC address space announced: 41.4
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1153
Total AfriNIC prefixes after maximum aggregation: 681
Prefixes being announced from the AfriNIC address blocks: 731
Unique aggregates announced from the AfriNIC address blocks: 563
AfriNIC Region origin ASes present in the Internet Routing Table: 93
AfriNIC Region origin ASes announcing only one prefix: 27
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1749760
Equivalent to 0 /8s, 26 /16s and 179 /24s
Percentage of available AfriNIC address space announced: 10.4
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 907 1098 653 Telstra Pty Ltd
4134 717 2413 110 Data Communications Bureau
4766 396 2903 238 Korea Internet Exchange for "
2907 363 1847 340 SINET Japan
9443 345 69 79 Primus Telecommunications
703 338 372 262 UUNET
17557 307 22 152 Pakistan Telecom
17676 292 4300 38 XTAGE CORPORATION
2764 287 289 236 connect.com.au pty ltd
7474 268 305 212 Optus Communications Pty Ltd
4538 249 1811 21 China Education and Research
4755 222 130 58 Videsh Sanchar Nigam Ltd. Aut
9942 217 69 128 COMindico Australia
9929 215 154 27 China Netcom Corp.
9800 214 347 59 CHINA UNICOM
9583 207 44 12 Satyam Infoway Ltd.,
9498 178 22 32 BHARTI BT INTERNET LTD.
17964 153 121 62 Beijing Dian-Xin-Tong Network
17642 152 40 111 RequestDSL BGP AS# for Sydney
4837 150 1400 100 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1416 7044 978 AT&T
701 1414 8696 973 UUNET Technologies, Inc.
1239 944 3088 661 Sprint
6197 828 483 251 BellSouth Network Solutions,
18566 766 176 8 Covad Communications
3356 734 10941 585 Level 3 Communications, LLC
209 722 3529 507 Qwest
4323 674 589 202 Time Warner Communications, I
20115 578 323 332 Charter Communications
6198 546 340 195 BellSouth Network Solutions,
7843 509 531 118 Adelphia Corp.
852 505 1124 402 Telus Advanced Communications
7066 502 207 271 Virginia Polytechnic Institut
7132 461 7398 310 Southwestern Bell Internet Se
2386 412 543 213 AT&T Data Communications Serv
19029 406 172 262 New Edge Networks
690 399 58 269 Merit Network
4355 390 323 101 EarthLink, Inc.
705 381 196 236 UUNET Technologies, Inc.
27364 381 28 24 Armstrong Cable Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 697 2076 580 UUNET - Commercial IP service
3301 336 1159 315 TeliaNet Sweden
3320 280 1972 230 Deutsche Telekom AG
8220 265 412 250 COLT Internet - International
1257 246 505 192 SWIPnet Swedish IP Network
680 229 2022 226 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
3246 185 424 183 Song Networks
786 175 1826 175 The JANET IP Service
5515 173 762 135 Sonera Solution Autonomous Sy
25186 168 201 109 France Telecom Transpac's Tra
8708 165 111 158 Romania Data Systems S.A.
3215 146 770 68 France Telecom Transpac
3303 143 557 138 Swisscom Ltd
5400 138 225 126 BT Ignite European Backbone
719 134 288 104 LANLINK autonomous system
12302 126 18 33 MobiFon S.A.
2856 119 1294 109 BTnet UK Regional network
3269 119 941 64 TELECOM ITALIA
3352 103 892 30 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 350 120 69 ImpSat
8151 240 336 124 UniNet S.A. de C.V.
11172 198 77 44 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
7303 139 52 17 Telecom Argentina Stet-France
6505 132 90 92 Global One Communicaoes Ltda
6503 126 220 93 AVANTEL, S.A.
6147 124 78 20 Telefonica Del Peru
11340 108 3 29 Red Universitaria Nacional
15311 78 18 38 Telefonica Empresas
6535 76 5 19 Chilesat Servicios Empresari
4270 69 17 8 Red de Interconexion Universi
11992 68 25 32 Integrated Systems
11311 66 7 22 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
1916 59 247 39 Fundacao de Amparo a Pesquisa
14420 59 4 22 ANDINATEL S.A.
5639 58 7 8 Telecommunications Services o
7738 58 218 13 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 249 632 218 The Internet Solution
5536 103 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
16637 26 9 19 Johnnic e-Ventures
9129 25 3 4 UUNET Kenya
5713 24 93 22 Telkom SA Ltd
12455 24 4 2 Jambonet Autonomous system
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
8524 18 2 4 AUCEGYPT Autonomous System
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 2 5 Sudatel Internet Exchange Aut
17148 14 1 8 First National Bank
2609 12 10 3 Tunisia BackBone AS
8346 12 6 12 SONATEL-AS Autonomous System
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 766 758 Covad Communications
4134 717 607 Data Communications Bureau
6197 828 577 BellSouth Network Solutions,
4323 674 472 Time Warner Communications, I
701 1414 441 UUNET Technologies, Inc.
7843 509 391 Adelphia Corp.
27364 381 357 Armstrong Cable Services
6198 546 351 BellSouth Network Solutions,
22909 325 308 Comcast Cable Corporation
5668 320 304 Century Telephone
22773 327 297 Cox Communications, Inc. Atla
4355 390 289 EarthLink, Inc.
1239 944 283 Sprint
6140 350 281 ImpSat
9443 345 266 Primus Telecommunications
1221 907 254 Telstra Pty Ltd
17676 292 254 XTAGE CORPORATION
6347 329 252 SAVVIS Communications Corpora
20115 578 246 Charter Communications
376 357 243 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64512 PRIVATE 131.95.1.240/28 16430 University of Southe
64198 RESERVED 192.107.195.0/24 22767 NASA Earth Science D
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
64198 RESERVED 198.10.49.0/24 22767 NASA Earth Science D
64512 PRIVATE 204.70.1.0/24 3561 Cable & Wireless USA
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 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
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 568 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 /9:4 /10:6 /11:15 /12:57
/13:104 /14:279 /15:493 /16:7524 /17:1854 /18:3427
/19:8857 /20:9313 /21:6715 /22:9412 /23:11066 /24:71683
/25:182 /26:233 /27:140 /28:32 /29:6 /30:47
/31:0 /32:12
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 751 766 Covad Communications
6197 673 828 BellSouth Network Solutions,
7018 529 1416 AT&T
701 433 1414 UUNET Technologies, Inc.
702 426 697 UUNET - Commercial IP service
6198 402 546 BellSouth Network Solutions,
7066 395 502 Virginia Polytechnic Institut
27364 375 381 Armstrong Cable Services
3356 371 734 Level 3 Communications, LLC
690 361 399 Merit Network
20115 360 578 Charter Communications
1239 334 944 Sprint
5668 283 320 Century Telephone
19029 264 406 New Edge Networks
25844 244 244 Skadden, Arps, Slate, Meagher
3320 227 280 Deutsche Telekom AG
4766 225 396 Korea Internet Exchange for "
6386 218 244 bellsouth.net, inc.
4355 215 390 EarthLink, Inc.
6517 215 240 Yipes Communications, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:764 13:1 15:6 16:1 17:3
20:7 24:877 32:81 38:44 40:26 44:1
55:1 56:1 57:11 61:342 62:444 63:1828
64:1801 65:1804 66:2226 67:249 68:709 69:379
80:434 81:179 82:60 128:141 129:263 130:69
131:78 132:17 134:176 135:16 136:129 137:115
138:126 139:38 140:158 141:133 142:111 143:48
144:83 145:39 146:290 147:74 148:317 149:85
150:119 151:60 152:209 153:59 154:1 155:130
156:61 157:55 158:134 159:142 160:46 161:51
162:367 163:71 164:332 165:165 166:104 167:212
168:176 169:96 170:294 171:8 192:5529 193:2512
194:2000 195:1302 196:515 198:3606 199:2834 200:2976
201:5 202:4295 203:5365 204:3027 205:2032 206:2250
207:2583 208:2448 209:2887 210:965 211:413 212:894
213:968 214:23 215:25 216:3392 217:788 218:116
219:80 220:154 221:18 222:1
End of report
