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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 07 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136249
Prefixes after maximum aggregation: 82815
Unique aggregates announced to Internet: 65800
Total ASes present in the Internet Routing Table: 16981
Origin-only ASes present in the Internet Routing Table: 14730
Origin ASes announcing only one prefix: 6803
Transit ASes present in the Internet Routing Table: 2251
Transit-only ASes present in the Internet Routing Table: 73
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1275497956
Equivalent to 76 /8s, 6 /16s and 141 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 57.3
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61137
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25748
Total APNIC prefixes after maximum aggregation: 13532
Prefixes being announced from the APNIC address blocks: 24065
Unique aggregates announced from the APNIC address blocks: 13289
APNIC Region origin ASes present in the Internet Routing Table: 2037
APNIC Region origin ASes announcing only one prefix: 612
APNIC Region transit ASes present in the Internet Routing Table: 321
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 140526080
Equivalent to 8 /8s, 96 /16s and 66 /24s
Percentage of available APNIC address space announced: 75.7
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: 78752
Total ARIN prefixes after maximum aggregation: 48596
Prefixes being announced from the ARIN address blocks: 60768
Unique aggregates announced from the ARIN address blocks: 21442
ARIN Region origin ASes present in the Internet Routing Table: 9076
ARIN Region origin ASes announcing only one prefix: 3214
ARIN Region transit ASes present in the Internet Routing Table: 895
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221385760
Equivalent to 13 /8s, 50 /16s and 20 /24s
Percentage of available ARIN address space announced: 73.3
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: 24825
Total RIPE prefixes after maximum aggregation: 17810
Prefixes being announced from the RIPE address blocks: 21641
Unique aggregates announced from the RIPE address blocks: 14322
RIPE Region origin ASes present in the Internet Routing Table: 5333
RIPE Region origin ASes announcing only one prefix: 2853
RIPE Region transit ASes present in the Internet Routing Table: 918
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 158076416
Equivalent to 9 /8s, 108 /16s and 14 /24s
Percentage of available RIPE address space announced: 55.4
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: 5763
Total LACNIC prefixes after maximum aggregation: 2192
Prefixes being announced from the LACNIC address blocks: 5429
Unique aggregates announced from the LACNIC address blocks: 3371
LACNIC Region origin ASes present in the Internet Routing Table: 369
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: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14467072
Equivalent to 0 /8s, 220 /16s and 192 /24s
Percentage of available LACNIC address space announced: 43.1
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1160
Total AfriNIC prefixes after maximum aggregation: 685
Prefixes being announced from the AfriNIC address blocks: 748
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: 24
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: 1839872
Equivalent to 0 /8s, 28 /16s and 19 /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 867 1092 631 Telstra Pty Ltd
4134 699 3023 119 Data Communications Bureau
4766 462 2916 251 Korea Internet Exchange for "
9583 439 40 56 Satyam Infoway Ltd.,
4755 361 129 52 Videsh Sanchar Nigam Ltd. Aut
2907 358 1862 334 SINET Japan
9443 355 69 80 Primus Telecommunications
703 341 374 263 UUNET
9929 331 156 32 China Netcom Corp.
17557 321 23 160 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
2764 295 274 241 connect.com.au pty ltd
7474 271 300 215 Optus Communications Pty Ltd
9942 224 71 127 COMindico Australia
9800 217 348 58 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 194 31 44 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 171 161 24 Hutchison Telecom (HK)
7633 160 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1422 6978 996 AT&T
701 1320 8560 950 UUNET Technologies, Inc.
1239 941 3036 639 Sprint
3356 883 10926 684 Level 3 Communications, LLC
209 732 3487 510 Qwest
18566 697 192 8 Covad Communications
4323 695 559 198 Time Warner Communications, I
6197 687 458 270 BellSouth Network Solutions,
20115 597 349 309 Charter Communications
6198 558 355 203 BellSouth Network Solutions,
7843 531 612 106 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7132 482 7847 332 Southwestern Bell Internet Se
2386 431 579 233 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
4355 396 323 103 EarthLink, Inc.
690 390 57 265 Merit Network
22909 381 840 27 Comcast Cable Corporation
376 378 343 112 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 672 2039 562 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 270 984 261 TeliaNet Sweden
8220 263 411 251 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
719 223 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 195 451 193 Song Networks
5515 194 762 140 Sonera Solution Autonomous Sy
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
3215 166 819 72 France Telecom Transpac
25186 163 187 105 France Telecom Transpac's Tra
5400 155 225 140 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 134 1101 65 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 378 122 69 ImpSat
8151 266 373 131 UniNet S.A. de C.V.
11172 207 75 43 Servicios Alestra S.A de C.V
16814 162 11 6 NSS, S.A.
7303 141 53 26 Telecom Argentina Stet-France
6503 138 220 93 AVANTEL, S.A.
6505 132 90 92 Global One Communicaoes Ltda
6147 131 78 19 Telefonica Del Peru
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
14420 73 5 29 ANDINATEL S.A.
4270 70 18 9 Red de Interconexion Universi
14259 69 4 5 GTD Internet S.A.
14535 69 6 5 Techtel S.A.
11311 68 7 16 Sinectis 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 105 7 13 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
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
8524 23 2 4 AUCEGYPT 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
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
12258 15 3 10 Vodacom Internet Company
8346 13 6 12 SONATEL-AS Autonomous System
17148 13 1 7 First National Bank
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 697 689 Covad Communications
4134 699 580 Data Communications Bureau
4323 695 497 Time Warner Communications, I
7843 531 425 Adelphia Corp.
6197 687 417 BellSouth Network Solutions,
9583 439 383 Satyam Infoway Ltd.,
27364 404 381 Armstrong Cable Services
701 1320 370 UUNET Technologies, Inc.
6198 558 355 BellSouth Network Solutions,
22909 381 354 Comcast Cable Corporation
5668 362 347 Century Telephone
22773 356 324 Cox Communications, Inc. Atla
6140 378 309 ImpSat
4755 361 309 Videsh Sanchar Nigam Ltd. Aut
1239 941 302 Sprint
9929 331 299 China Netcom Corp.
4355 396 293 EarthLink, Inc.
20115 597 288 Charter Communications
6347 370 287 SAVVIS Communications Corpora
9443 355 275 Primus Telecommunications
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
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 /12:57
/13:108 /14:295 /15:511 /16:7652 /17:1963 /18:3534
/19:9268 /20:9633 /21:6972 /22:9863 /23:11391 /24:74258
/25:190 /26:268 /27:158 /28:30 /29:4 /30:41
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 680 697 Covad Communications
6197 527 687 BellSouth Network Solutions,
7018 520 1422 AT&T
3356 485 883 Level 3 Communications, LLC
702 410 672 UUNET - Commercial IP service
6198 405 558 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 394 499 Virginia Polytechnic Institut
701 364 1320 UUNET Technologies, Inc.
1239 355 941 Sprint
690 353 390 Merit Network
20115 348 597 Charter Communications
5668 317 362 Century Telephone
4766 284 462 Korea Internet Exchange for "
9583 279 439 Satyam Infoway Ltd.,
9929 260 331 China Netcom Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 369 New Edge Networks
3320 240 293 Deutsche Telekom AG
13609 232 272 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:822 13:1 15:4 16:1 17:3
20:8 24:815 32:82 38:57 40:54 44:3
45:16 55:1 56:2 57:13 61:387 62:480
63:1815 64:1901 65:1944 66:2482 67:289 68:588
69:463 80:482 81:253 82:143 83:25 128:140
129:262 130:99 131:79 132:16 134:182 135:16
136:156 137:105 138:149 139:42 140:147 141:144
142:109 143:49 144:90 145:40 146:300 147:77
148:366 149:89 150:92 151:63 152:213 153:62
154:1 155:125 156:58 157:55 158:146 159:156
160:50 161:55 162:374 163:82 164:327 165:164
166:98 167:211 168:213 169:101 170:293 171:8
192:5505 193:2646 194:2026 195:1334 196:532 198:3652
199:2988 200:3245 201:7 202:4498 203:5453 204:2982
205:1969 206:2215 207:2598 208:2328 209:2922 210:1319
211:520 212:928 213:1085 214:26 215:26 216:3326
217:893 218:157 219:100 220:196 221:25 222:16
End of report
