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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 29 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135726
Prefixes after maximum aggregation: 82533
Unique aggregates announced to Internet: 65496
Total ASes present in the Internet Routing Table: 16932
Origin-only ASes present in the Internet Routing Table: 14693
Origin ASes announcing only one prefix: 6780
Transit ASes present in the Internet Routing Table: 2239
Transit-only ASes present in the Internet Routing Table: 76
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: 17
Number of addresses announced to Internet: 1289785188
Equivalent to 76 /8s, 224 /16s and 143 /24s
Percentage of available address space announced: 34.8
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 60667
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25496
Total APNIC prefixes after maximum aggregation: 13357
Prefixes being announced from the APNIC address blocks: 23829
Unique aggregates announced from the APNIC address blocks: 13247
APNIC Region origin ASes present in the Internet Routing Table: 2031
APNIC Region origin ASes announcing only one prefix: 608
APNIC Region transit ASes present in the Internet Routing Table: 319
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 139042944
Equivalent to 8 /8s, 73 /16s and 160 /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: 78617
Total ARIN prefixes after maximum aggregation: 48566
Prefixes being announced from the ARIN address blocks: 60691
Unique aggregates announced from the ARIN address blocks: 21282
ARIN Region origin ASes present in the Internet Routing Table: 9061
ARIN Region origin ASes announcing only one prefix: 3218
ARIN Region transit ASes present in the Internet Routing Table: 887
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 220995872
Equivalent to 13 /8s, 44 /16s and 33 /24s
Percentage of available ARIN address space announced: 73.2
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: 24699
Total RIPE prefixes after maximum aggregation: 17724
Prefixes being announced from the RIPE address blocks: 21555
Unique aggregates announced from the RIPE address blocks: 14228
RIPE Region origin ASes present in the Internet Routing Table: 5302
RIPE Region origin ASes announcing only one prefix: 2829
RIPE Region transit ASes present in the Internet Routing Table: 919
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157333504
Equivalent to 9 /8s, 96 /16s and 184 /24s
Percentage of available RIPE address space announced: 72.1
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: 5716
Total LACNIC prefixes after maximum aggregation: 2204
Prefixes being announced from the LACNIC address blocks: 5409
Unique aggregates announced from the LACNIC address blocks: 3395
LACNIC Region origin ASes present in the Internet Routing Table: 370
LACNIC Region origin ASes announcing only one prefix: 100
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14383360
Equivalent to 0 /8s, 219 /16s and 121 /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: 1196
Total AfriNIC prefixes after maximum aggregation: 682
Prefixes being announced from the AfriNIC address blocks: 736
Unique aggregates announced from the AfriNIC address blocks: 556
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: 11
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1837056
Equivalent to 0 /8s, 28 /16s and 8 /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 867 1107 628 Telstra Pty Ltd
4134 665 2847 117 Data Communications Bureau
4766 459 2916 250 Korea Internet Exchange for "
9583 419 44 11 Satyam Infoway Ltd.,
4755 365 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 355 69 80 Primus Telecommunications
703 340 374 262 UUNET
17557 328 23 167 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 296 275 241 connect.com.au pty ltd
7474 273 300 214 Optus Communications Pty Ltd
9942 230 72 132 COMindico Australia
9929 228 155 30 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9498 197 31 41 BHARTI BT INTERNET LTD.
4780 188 193 26 Digital United Inc.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 153 23 44 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1414 7021 995 AT&T
701 1323 8577 952 UUNET Technologies, Inc.
1239 951 3051 648 Sprint
3356 880 10942 683 Level 3 Communications, LLC
209 728 3503 512 Qwest
4323 695 559 199 Time Warner Communications, I
18566 693 192 8 Covad Communications
6197 690 458 270 BellSouth Network Solutions,
20115 597 349 311 Charter Communications
6198 550 354 195 BellSouth Network Solutions,
7843 536 610 119 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 428 579 231 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
690 397 58 267 Merit Network
4355 396 323 103 EarthLink, Inc.
22909 380 839 26 Comcast Cable Corporation
376 379 343 112 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 670 2039 560 UUNET - Commercial IP service
3320 288 2477 236 Deutsche Telekom AG
3301 270 984 261 TeliaNet Sweden
8220 264 410 251 COLT Internet - International
680 244 2027 240 DFN-IP service G-WiN
1257 237 510 195 SWIPnet Swedish IP Network
719 231 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 194 451 192 Song Networks
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
5515 167 762 134 Sonera Solution Autonomous Sy
25186 167 187 109 France Telecom Transpac's Tra
3215 166 819 72 France Telecom Transpac
5400 150 225 135 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.
2856 116 1278 106 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 380 123 65 ImpSat
8151 263 373 131 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 140 220 94 AVANTEL, S.A.
7303 136 51 31 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 132 90 92 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
14535 70 6 5 Techtel S.A.
4270 69 18 9 Red de Interconexion Universi
11311 69 7 16 Sinectis S.A.
14420 65 4 24 ANDINATEL S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
7738 62 234 14 Telecomunicacoes da Bahia S.A
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 89 272 79 The Internetworking Company o
2561 52 6 2 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
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
8524 17 1 3 AUCEGYPT Autonomous System
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
12258 15 3 10 Vodacom Internet Company
20928 15 16 1 Noor Advanced Technologies AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 693 685 Covad Communications
4134 665 548 Data Communications Bureau
4323 695 496 Time Warner Communications, I
6197 690 420 BellSouth Network Solutions,
7843 536 417 Adelphia Corp.
9583 419 408 Satyam Infoway Ltd.,
27364 404 381 Armstrong Cable Services
701 1323 371 UUNET Technologies, Inc.
6198 550 355 BellSouth Network Solutions,
22909 380 354 Comcast Cable Corporation
5668 359 344 Century Telephone
22773 359 320 Cox Communications, Inc. Atla
6140 380 315 ImpSat
4755 365 312 Videsh Sanchar Nigam Ltd. Aut
1239 951 303 Sprint
4355 396 293 EarthLink, Inc.
6347 371 287 SAVVIS Communications Corpora
20115 597 286 Charter Communications
9443 355 275 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
156.154.16.0/22 7786 Lockheed Martin IMS
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
/13:107 /14:292 /15:509 /16:7641 /17:1954 /18:3526
/19:9177 /20:9577 /21:6984 /22:9821 /23:11321 /24:73994
/25:191 /26:282 /27:164 /28:30 /29:4 /30:41
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 676 693 Covad Communications
6197 530 690 BellSouth Network Solutions,
7018 510 1414 AT&T
3356 487 880 Level 3 Communications, LLC
702 409 670 UUNET - Commercial IP service
6198 398 550 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 395 500 Virginia Polytechnic Institut
701 361 1323 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 356 951 Sprint
20115 348 597 Charter Communications
5668 317 359 Century Telephone
4766 281 459 Korea Internet Exchange for "
9583 263 419 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
19029 241 370 New Edge Networks
3320 235 288 Deutsche Telekom AG
6517 227 249 Yipes Communications, Inc.
14824 219 244 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:809 13:1 15:4 16:1 17:3
20:7 24:813 32:83 38:56 40:54 44:3
55:1 56:1 57:13 61:381 62:476 63:1812
64:1889 65:1928 66:2477 67:288 68:587 69:453
80:475 81:251 82:144 83:22 128:140 129:252
130:84 131:78 132:16 134:180 135:17 136:183
137:104 138:149 139:41 140:146 141:147 142:109
143:49 144:77 145:40 146:299 147:77 148:371
149:90 150:96 151:62 152:216 153:62 154:1
155:123 156:61 157:55 158:146 159:153 160:50
161:55 162:374 163:78 164:323 165:166 166:98
167:210 168:209 169:99 170:296 171:8 192:5522
193:2636 194:2031 195:1350 196:521 198:3657 199:2976
200:3224 201:7 202:4507 203:5456 204:2982 205:1989
206:2210 207:2595 208:2322 209:2907 210:1190 211:518
212:934 213:1068 214:26 215:26 216:3336 217:879
218:161 219:105 220:194 221:25 222:15
End of report
