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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 17 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135297
Prefixes after maximum aggregation: 82437
Unique aggregates announced to Internet: 64885
Total ASes present in the Internet Routing Table: 16864
Origin-only ASes present in the Internet Routing Table: 14625
Origin ASes announcing only one prefix: 6762
Transit ASes present in the Internet Routing Table: 2239
Transit-only ASes present in the Internet Routing Table: 79
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 31
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: 16
Number of addresses announced to Internet: 1288463460
Equivalent to 76 /8s, 204 /16s and 100 /24s
Percentage of available address space announced: 34.8
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 60431
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25303
Total APNIC prefixes after maximum aggregation: 13430
Prefixes being announced from the APNIC address blocks: 23649
Unique aggregates announced from the APNIC address blocks: 13539
APNIC Region origin ASes present in the Internet Routing Table: 2026
APNIC Region origin ASes announcing only one prefix: 602
APNIC Region transit ASes present in the Internet Routing Table: 320
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 138510208
Equivalent to 8 /8s, 65 /16s and 127 /24s
Percentage of available APNIC address space announced: 74.6
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: 78312
Total ARIN prefixes after maximum aggregation: 48395
Prefixes being announced from the ARIN address blocks: 60643
Unique aggregates announced from the ARIN address blocks: 21119
ARIN Region origin ASes present in the Internet Routing Table: 9031
ARIN Region origin ASes announcing only one prefix: 3209
ARIN Region transit ASes present in the Internet Routing Table: 889
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 220395296
Equivalent to 13 /8s, 34 /16s and 247 /24s
Percentage of available ARIN address space announced: 73.0
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, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 24709
Total RIPE prefixes after maximum aggregation: 17723
Prefixes being announced from the RIPE address blocks: 21513
Unique aggregates announced from the RIPE address blocks: 13614
RIPE Region origin ASes present in the Internet Routing Table: 5267
RIPE Region origin ASes announcing only one prefix: 2823
RIPE Region transit ASes present in the Internet Routing Table: 913
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157775360
Equivalent to 9 /8s, 103 /16s and 118 /24s
Percentage of available RIPE address space announced: 72.3
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: 5723
Total LACNIC prefixes after maximum aggregation: 2204
Prefixes being announced from the LACNIC address blocks: 5359
Unique aggregates announced from the LACNIC address blocks: 3315
LACNIC Region origin ASes present in the Internet Routing Table: 369
LACNIC Region origin ASes announcing only one prefix: 102
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 14354688
Equivalent to 0 /8s, 219 /16s and 9 /24s
Percentage of available LACNIC address space announced: 42.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1248
Total AfriNIC prefixes after maximum aggregation: 685
Prefixes being announced from the AfriNIC address blocks: 747
Unique aggregates announced from the AfriNIC address blocks: 560
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1836032
Equivalent to 0 /8s, 28 /16s and 4 /24s
Percentage of available AfriNIC address space announced: 10.9
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 884 1102 629 Telstra Pty Ltd
4134 662 2750 117 Data Communications Bureau
4766 445 2914 243 Korea Internet Exchange for "
9583 391 37 106 Satyam Infoway Ltd.,
4755 369 130 59 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 357 70 81 Primus Telecommunications
703 339 374 261 UUNET
17557 337 24 171 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 297 274 241 connect.com.au pty ltd
7474 270 304 210 Optus Communications Pty Ltd
9942 244 72 141 COMindico Australia
9929 228 155 30 China Netcom Corp.
9800 215 347 55 CHINA UNICOM
9498 196 31 38 BHARTI BT INTERNET LTD.
4837 171 1571 102 chinanet IDC center beijing n
9304 164 157 20 Hutchison Telecom (HK)
7633 155 23 42 Software Technology Parks of
4739 150 60 138 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1412 7195 988 AT&T
701 1332 8575 954 UUNET Technologies, Inc.
1239 954 3068 655 Sprint
3356 848 10940 674 Level 3 Communications, LLC
209 716 3502 504 Qwest
4323 692 559 199 Time Warner Communications, I
18566 691 192 8 Covad Communications
6197 682 458 270 BellSouth Network Solutions,
20115 624 350 328 Charter Communications
6198 548 354 196 BellSouth Network Solutions,
7843 536 597 120 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 495 206 269 Virginia Polytechnic Institut
7132 471 7834 324 Southwestern Bell Internet Se
2386 431 579 230 AT&T Data Communications Serv
690 397 58 267 Merit Network
4355 397 323 103 EarthLink, Inc.
27364 388 28 23 Armstrong Cable Services
376 380 343 112 Reseau Interordinateurs Scien
19029 373 168 247 New Edge Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 673 2039 562 UUNET - Commercial IP service
3301 337 1178 316 TeliaNet Sweden
3320 288 2477 236 Deutsche Telekom AG
8220 264 412 251 COLT Internet - International
680 242 2027 238 DFN-IP service G-WiN
1257 237 510 196 SWIPnet Swedish IP Network
719 233 288 105 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 192 451 190 Song Networks
786 175 1826 175 The JANET IP Service
8708 172 111 162 Romania Data Systems S.A.
1273 167 172 99 Cable & Wireless Deutschland
5515 167 762 134 Sonera Solution Autonomous Sy
25186 165 186 107 France Telecom Transpac's Tra
3215 163 800 78 France Telecom Transpac
5400 151 223 134 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 127 1069 64 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 377 123 64 ImpSat
8151 261 384 127 UniNet S.A. de C.V.
11172 207 75 43 Servicios Alestra S.A de C.V
16814 156 11 6 NSS, S.A.
6503 142 220 98 AVANTEL, S.A.
7303 138 52 31 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 132 90 92 Global One Communicaoes Ltda
11992 100 9 28 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
15311 78 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 70 7 17 Sinectis S.A.
14535 69 6 5 Techtel S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
14420 64 4 23 ANDINATEL S.A.
7738 63 234 14 Telecomunicacoes da Bahia S.A
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 251 632 218 The Internet Solution
5536 105 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
20928 43 16 1 Noor Advanced Technologies AS
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 33 3 4 UUNET Kenya
16637 25 9 18 Johnnic e-Ventures
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 22 2 4 AUCEGYPT Autonomous System
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
15825 16 1 9 Network Computer Systems Auto
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 691 683 Covad Communications
4134 662 545 Data Communications Bureau
4323 692 493 Time Warner Communications, I
7843 536 416 Adelphia Corp.
6197 682 412 BellSouth Network Solutions,
701 1332 378 UUNET Technologies, Inc.
27364 388 365 Armstrong Cable Services
6198 548 352 BellSouth Network Solutions,
22909 372 346 Comcast Cable Corporation
5668 352 337 Century Telephone
6140 377 313 ImpSat
22773 350 313 Cox Communications, Inc. Atla
4755 369 310 Videsh Sanchar Nigam Ltd. Aut
1239 954 299 Sprint
20115 624 296 Charter Communications
4355 397 294 EarthLink, Inc.
6347 371 289 SAVVIS Communications Corpora
9583 391 285 Satyam Infoway Ltd.,
9443 357 276 Primus Telecommunications
376 380 268 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
29975 UNALLOCATED 196.46.160.0/20 3741 The Internet Solutio
64541 PRIVATE 209.120.215.0/24 22551 Anobi Technology Cor
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
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
164.234.0.0/18 721 DLA Systems Automation Center
164.234.0.0/16 721 DLA Systems Automation Center
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 /8:20 /9:3 /10:6 /11:15 /12:57
/13:107 /14:292 /15:508 /16:7633 /17:1943 /18:3517
/19:9072 /20:9514 /21:6941 /22:9740 /23:11253 /24:73911
/25:199 /26:309 /27:162 /28:31 /29:8 /30:41
/31:0 /32:15
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 674 691 Covad Communications
6197 522 682 BellSouth Network Solutions,
7018 506 1412 AT&T
3356 458 848 Level 3 Communications, LLC
702 409 673 UUNET - Commercial IP service
6198 396 548 BellSouth Network Solutions,
7066 390 495 Virginia Polytechnic Institut
27364 381 388 Armstrong Cable Services
20115 376 624 Charter Communications
701 366 1332 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 351 954 Sprint
5668 311 352 Century Telephone
4766 267 445 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 373 New Edge Networks
9583 238 391 Satyam Infoway Ltd.,
3320 235 288 Deutsche Telekom AG
14824 232 257 NewSouth Communications Corp.
6517 230 252 Yipes Communications, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:796 13:1 15:4 16:1 17:3
20:6 24:830 32:83 38:53 40:56 44:3
55:1 56:1 57:12 61:381 62:496 63:1840
64:1884 65:1938 66:2383 67:283 68:575 69:446
80:476 81:275 82:126 83:10 128:141 129:240
130:73 131:79 132:16 134:177 135:16 136:186
137:107 138:152 139:44 140:149 141:135 142:109
143:49 144:76 145:37 146:289 147:76 148:370
149:85 150:97 151:62 152:216 153:60 154:1
155:123 156:62 157:57 158:147 159:142 160:51
161:55 162:376 163:80 164:318 165:163 166:111
167:210 168:210 169:99 170:302 171:8 192:5494
193:2634 194:2022 195:1351 196:525 198:3655 199:2959
200:3188 201:7 202:4469 203:5486 204:2985 205:1994
206:2252 207:2626 208:2376 209:2900 210:1181 211:484
212:921 213:1112 214:26 215:26 216:3334 217:902
218:154 219:104 220:196 221:20 222:6
End of report
