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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 25 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135362
Prefixes after maximum aggregation: 82452
Unique aggregates announced to Internet: 65432
Total ASes present in the Internet Routing Table: 16919
Origin-only ASes present in the Internet Routing Table: 14686
Origin ASes announcing only one prefix: 6785
Transit ASes present in the Internet Routing Table: 2233
Transit-only ASes present in the Internet Routing Table: 79
Average AS path length visible in the Internet Routing Table: 4.7
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: 1288551268
Equivalent to 76 /8s, 205 /16s and 187 /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: 60461
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25345
Total APNIC prefixes after maximum aggregation: 13372
Prefixes being announced from the APNIC address blocks: 23673
Unique aggregates announced from the APNIC address blocks: 13285
APNIC Region origin ASes present in the Internet Routing Table: 2031
APNIC Region origin ASes announcing only one prefix: 610
APNIC Region transit ASes present in the Internet Routing Table: 318
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 139019136
Equivalent to 8 /8s, 73 /16s and 67 /24s
Percentage of available APNIC address space announced: 74.9
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: 78359
Total ARIN prefixes after maximum aggregation: 48417
Prefixes being announced from the ARIN address blocks: 60566
Unique aggregates announced from the ARIN address blocks: 21253
ARIN Region origin ASes present in the Internet Routing Table: 9050
ARIN Region origin ASes announcing only one prefix: 3222
ARIN Region transit ASes present in the Internet Routing Table: 886
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 220653600
Equivalent to 13 /8s, 38 /16s and 232 /24s
Percentage of available ARIN address space announced: 73.1
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
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: 24716
Total RIPE prefixes after maximum aggregation: 17775
Prefixes being announced from the RIPE address blocks: 21519
Unique aggregates announced from the RIPE address blocks: 14206
RIPE Region origin ASes present in the Internet Routing Table: 5296
RIPE Region origin ASes announcing only one prefix: 2826
RIPE Region transit ASes present in the Internet Routing Table: 915
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 156655360
Equivalent to 9 /8s, 86 /16s and 95 /24s
Percentage of available RIPE address space announced: 71.8
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: 5725
Total LACNIC prefixes after maximum aggregation: 2202
Prefixes being announced from the LACNIC address blocks: 5410
Unique aggregates announced from the LACNIC address blocks: 3374
LACNIC Region origin ASes present in the Internet Routing Table: 371
LACNIC Region origin ASes announcing only one prefix: 102
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14382848
Equivalent to 0 /8s, 219 /16s and 119 /24s
Percentage of available LACNIC address space announced: 42.9
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1215
Total AfriNIC prefixes after maximum aggregation: 686
Prefixes being announced from the AfriNIC address blocks: 749
Unique aggregates announced from the AfriNIC address blocks: 561
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 25
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1840128
Equivalent to 0 /8s, 28 /16s and 20 /24s
Percentage of available AfriNIC address space announced: 11.0
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 871 1107 630 Telstra Pty Ltd
4134 665 2847 117 Data Communications Bureau
4766 459 2916 250 Korea Internet Exchange for "
9583 382 42 32 Satyam Infoway Ltd.,
4755 364 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 356 70 81 Primus Telecommunications
703 342 374 264 UUNET
17557 328 23 168 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 296 275 241 connect.com.au pty ltd
7474 270 300 213 Optus Communications Pty Ltd
9942 230 72 132 COMindico Australia
9929 226 155 30 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9498 196 31 40 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 169 159 23 Hutchison Telecom (HK)
4780 168 193 26 Digital United Inc.
7633 159 23 44 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1414 7020 990 AT&T
701 1326 8573 954 UUNET Technologies, Inc.
1239 951 3067 650 Sprint
3356 867 10941 678 Level 3 Communications, LLC
209 723 3502 510 Qwest
4323 696 558 200 Time Warner Communications, I
18566 692 192 8 Covad Communications
6197 682 458 270 BellSouth Network Solutions,
20115 602 348 317 Charter Communications
6198 550 354 195 BellSouth Network Solutions,
7843 537 600 116 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 500 207 272 Virginia Polytechnic Institut
7132 478 7834 330 Southwestern Bell Internet Se
2386 429 579 230 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
690 397 58 267 Merit Network
4355 396 323 103 EarthLink, Inc.
376 379 343 112 Reseau Interordinateurs Scien
22909 375 835 25 Comcast Cable Corporation
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 672 2039 562 UUNET - Commercial IP service
3301 337 1178 316 TeliaNet Sweden
3320 288 2477 236 Deutsche Telekom AG
8220 264 410 251 COLT Internet - International
680 242 2027 238 DFN-IP service G-WiN
1257 236 510 196 SWIPnet Swedish IP Network
719 230 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 194 451 192 Song Networks
786 175 1826 175 The JANET IP Service
8708 172 111 162 Romania Data Systems S.A.
5515 167 762 134 Sonera Solution Autonomous Sy
3215 166 819 72 France Telecom Transpac
25186 166 186 108 France Telecom Transpac's Tra
5400 149 224 134 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 129 1069 64 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
1273 117 167 92 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 379 123 65 ImpSat
8151 260 371 128 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 144 221 98 AVANTEL, S.A.
7303 136 51 31 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 130 90 90 Global One Communicaoes Ltda
11556 88 73 25 Cable-Wireless Panama
11992 88 9 28 Integrated Systems
6535 79 5 19 Chilesat Servicios Empresari
15311 77 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 252 632 219 The Internet Solution
5536 104 7 12 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 54 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 32 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
15825 18 4 3 Network Computer Systems Auto
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
12258 15 3 10 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 692 684 Covad Communications
4134 665 548 Data Communications Bureau
4323 696 496 Time Warner Communications, I
7843 537 421 Adelphia Corp.
6197 682 412 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1326 372 UUNET Technologies, Inc.
6198 550 355 BellSouth Network Solutions,
9583 382 350 Satyam Infoway Ltd.,
22909 375 350 Comcast Cable Corporation
5668 357 340 Century Telephone
22773 354 315 Cox Communications, Inc. Atla
6140 379 314 ImpSat
4755 364 311 Videsh Sanchar Nigam Ltd. Aut
1239 951 301 Sprint
4355 396 293 EarthLink, Inc.
6347 374 290 SAVVIS Communications Corpora
20115 602 285 Charter Communications
9443 356 275 Primus Telecommunications
376 379 267 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 /8:19 /9:3 /10:6 /11:15 /12:57
/13:106 /14:292 /15:508 /16:7639 /17:1950 /18:3518
/19:9137 /20:9539 /21:6948 /22:9762 /23:11308 /24:73826
/25:196 /26:288 /27:161 /28:29 /29:4 /30:40
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 675 692 Covad Communications
6197 522 682 BellSouth Network Solutions,
7018 510 1414 AT&T
3356 484 867 Level 3 Communications, LLC
702 409 672 UUNET - Commercial IP service
6198 398 550 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 395 500 Virginia Polytechnic Institut
701 361 1326 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 354 951 Sprint
20115 354 602 Charter Communications
5668 315 357 Century Telephone
4766 281 459 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 240 369 New Edge Networks
9583 236 382 Satyam Infoway Ltd.,
3320 235 288 Deutsche Telekom AG
6517 231 253 Yipes Communications, Inc.
14824 219 244 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:803 13:1 15:4 16:1 17:3
20:6 24:825 32:83 38:54 40:58 44:3
55:1 56:1 57:13 61:380 62:482 63:1815
64:1886 65:1930 66:2432 67:288 68:579 69:450
80:478 81:234 82:139 83:14 128:142 129:253
130:82 131:78 132:16 134:179 135:17 136:189
137:105 138:150 139:38 140:145 141:146 142:109
143:49 144:74 145:40 146:298 147:76 148:371
149:87 150:96 151:62 152:216 153:60 154:1
155:124 156:61 157:55 158:146 159:151 160:51
161:55 162:375 163:79 164:319 165:164 166:98
167:210 168:210 169:99 170:299 171:8 192:5494
193:2650 194:2033 195:1352 196:526 198:3651 199:2970
200:3226 201:7 202:4474 203:5445 204:2988 205:1991
206:2226 207:2591 208:2326 209:2903 210:1163 211:516
212:933 213:1068 214:26 215:26 216:3331 217:873
218:160 219:105 220:192 221:25 222:6
End of report
