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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 21 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136944
Prefixes after maximum aggregation: 83134
Unique aggregates announced to Internet: 66295
Total ASes present in the Internet Routing Table: 17059
Origin-only ASes present in the Internet Routing Table: 14796
Origin ASes announcing only one prefix: 6832
Transit ASes present in the Internet Routing Table: 2263
Transit-only ASes present in the Internet Routing Table: 82
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: 1281920256
Equivalent to 76 /8s, 104 /16s and 141 /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: 61402
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 26083
Total APNIC prefixes after maximum aggregation: 13652
Prefixes being announced from the APNIC address blocks: 24391
Unique aggregates announced from the APNIC address blocks: 13654
APNIC Region origin ASes present in the Internet Routing Table: 2044
APNIC Region origin ASes announcing only one prefix: 607
APNIC Region transit ASes present in the Internet Routing Table: 327
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 144604032
Equivalent to 8 /8s, 158 /16s and 123 /24s
Percentage of available APNIC address space announced: 77.9
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: 78925
Total ARIN prefixes after maximum aggregation: 48713
Prefixes being announced from the ARIN address blocks: 60888
Unique aggregates announced from the ARIN address blocks: 21446
ARIN Region origin ASes present in the Internet Routing Table: 9105
ARIN Region origin ASes announcing only one prefix: 3233
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: 16
Number of ARIN addresses announced to Internet: 221912608
Equivalent to 13 /8s, 58 /16s and 30 /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: 24989
Total RIPE prefixes after maximum aggregation: 17890
Prefixes being announced from the RIPE address blocks: 21808
Unique aggregates announced from the RIPE address blocks: 14386
RIPE Region origin ASes present in the Internet Routing Table: 5366
RIPE Region origin ASes announcing only one prefix: 2867
RIPE Region transit ASes present in the Internet Routing Table: 932
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 159533824
Equivalent to 9 /8s, 130 /16s and 75 /24s
Percentage of available RIPE address space announced: 55.9
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: 2204
Prefixes being announced from the LACNIC address blocks: 5446
Unique aggregates announced from the LACNIC address blocks: 3419
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: 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: 14618880
Equivalent to 0 /8s, 223 /16s and 17 /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: 1148
Total AfriNIC prefixes after maximum aggregation: 675
Prefixes being announced from the AfriNIC address blocks: 752
Unique aggregates announced from the AfriNIC address blocks: 564
AfriNIC Region origin ASes present in the Internet Routing Table: 91
AfriNIC Region origin ASes announcing only one prefix: 23
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1832960
Equivalent to 0 /8s, 27 /16s and 248 /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 859 1091 625 Telstra Pty Ltd
4134 717 3155 119 Data Communications Bureau
4766 472 2916 251 Korea Internet Exchange for "
9583 438 39 95 Satyam Infoway Ltd.,
4755 358 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 356 1862 332 SINET Japan
9443 353 69 78 Primus Telecommunications
9929 347 155 31 China Netcom Corp.
17676 341 5084 33 XTAGE CORPORATION
703 337 374 259 UUNET
17557 322 23 164 Pakistan Telecom
2764 293 273 239 connect.com.au pty ltd
7474 274 300 215 Optus Communications Pty Ltd
9942 222 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 174 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 1420 6964 996 AT&T
701 1315 8554 943 UUNET Technologies, Inc.
1239 938 3033 637 Sprint
3356 894 10968 690 Level 3 Communications, LLC
209 760 3494 519 Qwest
4323 716 559 198 Time Warner Communications, I
18566 699 192 8 Covad Communications
6197 691 507 253 BellSouth Network Solutions,
6198 568 366 207 BellSouth Network Solutions,
20115 562 343 302 Charter Communications
7843 535 620 110 Adelphia Corp.
852 513 1127 404 Telus Advanced Communications
7066 502 208 274 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 391 323 101 EarthLink, Inc.
22909 383 839 23 Comcast Cable Corporation
376 380 343 112 Reseau Interordinateurs Scien
6347 375 386 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 293 2477 235 Deutsche Telekom AG
3301 268 984 258 TeliaNet Sweden
8220 265 412 253 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
719 200 288 103 LANLINK autonomous system
3246 197 451 194 Song Networks
5515 197 778 140 Sonera Solution Autonomous Sy
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
25186 169 187 110 France Telecom Transpac's Tra
3215 167 815 71 France Telecom Transpac
5400 157 241 140 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 145 78 20 Telefonica Del Peru
7303 141 53 26 Telecom Argentina Stet-France
6503 136 220 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 71 7 16 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
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
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
6713 25 38 9 Itissalat Al-MAGHRIB
16637 25 9 18 Johnnic e-Ventures
12455 24 4 2 Jambonet Autonomous system
8524 23 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 717 598 Data Communications Bureau
4323 716 518 Time Warner Communications, I
6197 691 438 BellSouth Network Solutions,
7843 535 425 Adelphia Corp.
27364 405 382 Armstrong Cable Services
701 1315 372 UUNET Technologies, Inc.
6198 568 361 BellSouth Network Solutions,
22909 383 360 Comcast Cable Corporation
5668 366 350 Century Telephone
9583 438 343 Satyam Infoway Ltd.,
22773 360 324 Cox Communications, Inc. Atla
9929 347 316 China Netcom Corp.
6140 380 311 ImpSat
17676 341 308 XTAGE CORPORATION
4755 358 305 Videsh Sanchar Nigam Ltd. Aut
1239 938 301 Sprint
4355 391 290 EarthLink, Inc.
6347 375 290 SAVVIS Communications Corpora
9443 353 275 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18416 UNALLOCATED 61.56.96.0/20 9919 New Century InfoComm
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
65500 PRIVATE 213.190.3.0/24 12769 Iber-X
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 /16:7715 /17:1985 /18:3550
/19:9297 /20:9702 /21:7030 /22:9936 /23:11405 /24:74618
/25:207 /26:250 /27:142 /28:29 /29:3 /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 531 1420 AT&T
6197 527 691 BellSouth Network Solutions,
3356 494 894 Level 3 Communications, LLC
6198 408 568 BellSouth Network Solutions,
702 402 664 UUNET - Commercial IP service
27364 398 405 Armstrong Cable Services
7066 396 502 Virginia Polytechnic Institut
701 365 1315 UUNET Technologies, Inc.
1239 353 938 Sprint
690 326 363 Merit Network
5668 320 366 Century Telephone
20115 317 562 Charter Communications
4766 292 472 Korea Internet Exchange for "
9583 279 438 Satyam Infoway Ltd.,
9929 276 347 China Netcom Corp.
14824 250 275 NewSouth Communications Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
3320 240 293 Deutsche Telekom AG
19029 239 366 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 24:811 32:82 38:62 40:54 44:3
55:1 56:4 57:13 61:407 62:459 63:1820
64:1891 65:1943 66:2512 67:297 68:550 69:494
80:502 81:264 82:154 83:30 128:148 129:252
130:101 131:88 132:17 134:183 135:17 136:193
137:106 138:151 139:38 140:147 141:133 142:108
143:48 144:92 145:40 146:299 147:77 148:367
149:92 150:92 151:63 152:203 153:62 154:1
155:130 156:59 157:54 158:144 159:159 160:51
161:53 162:377 163:79 164:329 165:164 166:98
167:209 168:215 169:102 170:289 171:8 192:5529
193:2647 194:2022 195:1347 196:535 198:3656 199:3006
200:3272 201:8 202:4547 203:5492 204:2985 205:1983
206:2273 207:2557 208:2303 209:2847 210:1361 211:523
212:947 213:1136 214:35 215:23 216:3346 217:890
218:165 219:96 220:205 221:28 222:23
End of report
