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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 23 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136857
Prefixes after maximum aggregation: 83179
Unique aggregates announced to Internet: 66315
Total ASes present in the Internet Routing Table: 17082
Origin-only ASes present in the Internet Routing Table: 14814
Origin ASes announcing only one prefix: 6844
Transit ASes present in the Internet Routing Table: 2268
Transit-only ASes present in the Internet Routing Table: 81
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 26
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: 1282538752
Equivalent to 76 /8s, 113 /16s and 253 /24s
Percentage of available address space announced: 34.6
Percentage of allocated address space announced: 57.6
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61444
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 26018
Total APNIC prefixes after maximum aggregation: 13656
Prefixes being announced from the APNIC address blocks: 24329
Unique aggregates announced from the APNIC address blocks: 13671
APNIC Region origin ASes present in the Internet Routing Table: 2045
APNIC Region origin ASes announcing only one prefix: 610
APNIC Region transit ASes present in the Internet Routing Table: 329
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 144975232
Equivalent to 8 /8s, 164 /16s and 37 /24s
Percentage of available APNIC address space announced: 78.1
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: 78848
Total ARIN prefixes after maximum aggregation: 48719
Prefixes being announced from the ARIN address blocks: 60825
Unique aggregates announced from the ARIN address blocks: 21470
ARIN Region origin ASes present in the Internet Routing Table: 9113
ARIN Region origin ASes announcing only one prefix: 3233
ARIN Region transit ASes present in the Internet Routing Table: 890
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 222107424
Equivalent to 13 /8s, 61 /16s and 23 /24s
Percentage of available ARIN address space announced: 73.5
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: 25048
Total RIPE prefixes after maximum aggregation: 17917
Prefixes being announced from the RIPE address blocks: 21859
Unique aggregates announced from the RIPE address blocks: 14401
RIPE Region origin ASes present in the Internet Routing Table: 5380
RIPE Region origin ASes announcing only one prefix: 2875
RIPE Region transit ASes present in the Internet Routing Table: 930
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 159577600
Equivalent to 9 /8s, 130 /16s and 246 /24s
Percentage of available RIPE address space announced: 56.0
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, 80/5, 88/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5797
Total LACNIC prefixes after maximum aggregation: 2213
Prefixes being announced from the LACNIC address blocks: 5442
Unique aggregates announced from the LACNIC address blocks: 3392
LACNIC Region origin ASes present in the Internet Routing Table: 373
LACNIC Region origin ASes announcing only one prefix: 104
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: 15
Number of LACNIC addresses announced to Internet: 14623488
Equivalent to 0 /8s, 223 /16s and 35 /24s
Percentage of available LACNIC address space announced: 43.6
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1144
Total AfriNIC prefixes after maximum aggregation: 674
Prefixes being announced from the AfriNIC address blocks: 756
Unique aggregates announced from the AfriNIC address blocks: 562
AfriNIC Region origin ASes present in the Internet Routing Table: 90
AfriNIC Region origin ASes announcing only one prefix: 22
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1840384
Equivalent to 0 /8s, 28 /16s and 21 /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 858 1091 625 Telstra Pty Ltd
4134 724 3171 120 Data Communications Bureau
4766 471 2914 250 Korea Internet Exchange for "
9583 438 39 95 Satyam Infoway Ltd.,
2907 356 1862 332 SINET Japan
9443 354 69 78 Primus Telecommunications
9929 349 155 31 China Netcom Corp.
17676 341 5084 33 XTAGE CORPORATION
703 336 374 259 UUNET
17557 322 23 164 Pakistan Telecom
2764 293 273 239 connect.com.au pty ltd
7474 273 300 215 Optus Communications Pty Ltd
4755 226 129 53 Videsh Sanchar Nigam Ltd. Aut
9942 223 71 126 COMindico Australia
9800 217 348 58 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 204 31 44 BHARTI BT INTERNET LTD.
4837 179 1571 102 chinanet IDC center beijing n
9304 169 159 24 Hutchison Telecom (HK)
7633 159 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1424 6964 994 AT&T
701 1317 8554 944 UUNET Technologies, Inc.
1239 939 3033 637 Sprint
3356 895 10968 690 Level 3 Communications, LLC
209 757 3495 519 Qwest
4323 720 559 200 Time Warner Communications, I
18566 699 192 8 Covad Communications
6197 693 507 255 BellSouth Network Solutions,
6198 565 368 207 BellSouth Network Solutions,
20115 550 343 293 Charter Communications
7843 541 624 112 Adelphia Corp.
852 513 1127 404 Telus Advanced Communications
7066 501 208 274 Virginia Polytechnic Institut
7132 450 7847 332 Southwestern Bell Internet Se
2386 432 579 234 AT&T Data Communications Serv
27364 405 29 23 Armstrong Cable Services
4355 393 323 103 EarthLink, Inc.
22909 384 839 23 Comcast Cable Corporation
376 380 343 112 Reseau Interordinateurs Scien
6347 377 386 85 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 664 2039 555 UUNET - Commercial IP service
3320 296 2477 236 Deutsche Telekom AG
3301 267 984 257 TeliaNet Sweden
8220 266 412 253 COLT Internet - International
680 244 2025 239 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
5515 201 779 143 Sonera Solution Autonomous Sy
719 200 288 103 LANLINK autonomous system
3246 198 451 195 Song Networks
25186 176 188 117 France Telecom Transpac's Tra
786 175 1826 175 The JANET IP Service
8708 174 111 163 Romania Data Systems S.A.
3215 167 815 71 France Telecom Transpac
5400 158 241 141 BT Ignite European Backbone
6746 136 28 114 Dynamic Network Technologies,
3303 135 610 135 Swisscom Ltd
3269 134 1101 65 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
1273 111 166 88 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 380 122 69 ImpSat
8151 265 357 130 UniNet S.A. de C.V.
11172 208 75 43 Servicios Alestra S.A de C.V
16814 163 11 6 NSS, S.A.
6147 147 78 20 Telefonica Del Peru
7303 140 53 27 Telecom Argentina Stet-France
6503 135 220 92 AVANTEL, S.A.
6505 132 90 91 Global One Communicaoes Ltda
11992 90 9 29 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
14420 76 5 32 ANDINATEL S.A.
15311 75 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 70 7 15 Sinectis S.A.
14535 70 6 5 Techtel S.A.
14259 69 4 5 GTD Internet S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 254 632 219 The Internet Solution
5536 106 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 89 272 79 The Internetworking Company o
11845 36 9 11 Data Pro Business Online
9129 32 3 4 UUNET Kenya
24835 31 18 6 RAYA Telecom - Egypt
5713 26 125 24 Telkom SA Ltd
12455 25 4 2 Jambonet Autonomous system
16637 25 9 18 Johnnic e-Ventures
6713 24 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
12258 15 3 10 Vodacom Internet Company
15808 14 1 6 Communication Solutions Ltd i
8346 13 6 12 SONATEL-AS Autonomous System
17148 13 1 7 First National Bank
2609 12 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 699 691 Covad Communications
4134 724 604 Data Communications Bureau
4323 720 520 Time Warner Communications, I
6197 693 438 BellSouth Network Solutions,
7843 541 429 Adelphia Corp.
27364 405 382 Armstrong Cable Services
701 1317 373 UUNET Technologies, Inc.
22909 384 361 Comcast Cable Corporation
6198 565 358 BellSouth Network Solutions,
5668 367 350 Century Telephone
9583 438 343 Satyam Infoway Ltd.,
22773 360 324 Cox Communications, Inc. Atla
9929 349 318 China Netcom Corp.
6140 380 311 ImpSat
17676 341 308 XTAGE CORPORATION
1239 939 302 Sprint
6347 377 292 SAVVIS Communications Corpora
4355 393 290 EarthLink, Inc.
9443 354 276 Primus Telecommunications
376 380 268 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18416 UNALLOCATED 61.56.96.0/20 9919 New Century InfoComm
65001 PRIVATE 61.203.160.0/20 10013 FreeBit.Com Co.,LTD.
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
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 /8:18 /9:3 /10:6 /11:15 /12:58
/13:112 /14:293 /15:508 /16:7740 /17:1989 /18:3548
/19:9305 /20:9719 /21:7037 /22:9931 /23:11409 /24:74473
/25:207 /26:250 /27:141 /28:29 /29:4 /30:50
/31:0 /32:12
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 682 699 Covad Communications
7018 535 1424 AT&T
6197 529 693 BellSouth Network Solutions,
3356 495 895 Level 3 Communications, LLC
6198 403 565 BellSouth Network Solutions,
702 402 664 UUNET - Commercial IP service
27364 398 405 Armstrong Cable Services
7066 395 501 Virginia Polytechnic Institut
701 366 1317 UUNET Technologies, Inc.
1239 354 939 Sprint
5668 320 367 Century Telephone
20115 306 550 Charter Communications
690 295 332 Merit Network
4766 293 471 Korea Internet Exchange for "
9583 279 438 Satyam Infoway Ltd.,
9929 278 349 China Netcom Corp.
14824 250 275 NewSouth Communications Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
3320 243 296 Deutsche Telekom AG
19029 236 362 New Edge Networks
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:820 13:1 15:4 16:1 17:3
20:8 24:795 32:81 38:62 40:54 44:3
55:1 56:4 57:13 61:408 62:460 63:1826
64:1891 65:1945 66:2511 67:298 68:551 69:493
80:501 81:265 82:153 83:30 128:146 129:252
130:97 131:89 132:19 134:182 135:17 136:193
137:106 138:151 139:38 140:150 141:133 142:108
143:50 144:92 145:41 146:299 147:77 148:368
149:92 150:93 151:63 152:189 153:62 154:1
155:130 156:59 157:54 158:146 159:159 160:51
161:53 162:377 163:79 164:328 165:158 166:98
167:209 168:215 169:103 170:289 171:8 192:5521
193:2649 194:2026 195:1347 196:538 198:3644 199:3020
200:3263 201:8 202:4543 203:5432 204:2982 205:1980
206:2270 207:2485 208:2286 209:2855 210:1368 211:520
212:957 213:1151 214:35 215:27 216:3347 217:893
218:170 219:87 220:207 221:30 222:23
End of report
