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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 16 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135142
Prefixes after maximum aggregation: 82443
Unique aggregates announced to Internet: 65405
Total ASes present in the Internet Routing Table: 16851
Origin-only ASes present in the Internet Routing Table: 14618
Origin ASes announcing only one prefix: 6760
Transit ASes present in the Internet Routing Table: 2233
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.8
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: 1284130340
Equivalent to 76 /8s, 138 /16s and 70 /24s
Percentage of available address space announced: 34.6
Percentage of allocated address space announced: 59.5
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 60263
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25254
Total APNIC prefixes after maximum aggregation: 13418
Prefixes being announced from the APNIC address blocks: 23601
Unique aggregates announced from the APNIC address blocks: 13541
APNIC Region origin ASes present in the Internet Routing Table: 2024
APNIC Region origin ASes announcing only one prefix: 601
APNIC Region transit ASes present in the Internet Routing Table: 320
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 138479936
Equivalent to 8 /8s, 65 /16s and 9 /24s
Percentage of available APNIC address space announced: 74.6
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: 78331
Total ARIN prefixes after maximum aggregation: 48422
Prefixes being announced from the ARIN address blocks: 60600
Unique aggregates announced from the ARIN address blocks: 21110
ARIN Region origin ASes present in the Internet Routing Table: 9031
ARIN Region origin ASes announcing only one prefix: 3215
ARIN Region transit ASes present in the Internet Routing Table: 884
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 220331552
Equivalent to 13 /8s, 33 /16s and 254 /24s
Percentage of available ARIN address space announced: 73.0
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: 24650
Total RIPE prefixes after maximum aggregation: 17709
Prefixes being announced from the RIPE address blocks: 21408
Unique aggregates announced from the RIPE address blocks: 14097
RIPE Region origin ASes present in the Internet Routing Table: 5258
RIPE Region origin ASes announcing only one prefix: 2815
RIPE Region transit ASes present in the Internet Routing Table: 909
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 153353728
Equivalent to 9 /8s, 35 /16s and 254 /24s
Percentage of available RIPE address space announced: 70.3
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: 5693
Total LACNIC prefixes after maximum aggregation: 2207
Prefixes being announced from the LACNIC address blocks: 5356
Unique aggregates announced from the LACNIC address blocks: 3321
LACNIC Region origin ASes present in the Internet Routing Table: 370
LACNIC Region origin ASes announcing only one prefix: 103
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: 16
Number of LACNIC addresses announced to Internet: 14359552
Equivalent to 0 /8s, 219 /16s and 28 /24s
Percentage of available LACNIC address space announced: 42.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1212
Total AfriNIC prefixes after maximum aggregation: 687
Prefixes being announced from the AfriNIC address blocks: 751
Unique aggregates announced from the AfriNIC address blocks: 560
AfriNIC Region origin ASes present in the Internet Routing Table: 93
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1836032
Equivalent to 0 /8s, 28 /16s and 4 /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 884 1102 629 Telstra Pty Ltd
4134 661 2750 116 Data Communications Bureau
4766 444 2914 242 Korea Internet Exchange for "
9583 390 37 105 Satyam Infoway Ltd.,
4755 363 130 59 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 356 70 81 Primus Telecommunications
703 339 374 261 UUNET
17557 337 24 171 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 298 274 242 connect.com.au pty ltd
7474 270 304 210 Optus Communications Pty Ltd
9942 243 72 140 COMindico Australia
9929 228 155 30 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9498 196 31 38 BHARTI BT INTERNET LTD.
4837 169 1571 102 chinanet IDC center beijing n
9304 164 157 20 Hutchison Telecom (HK)
7633 155 23 42 Software Technology Parks of
4739 150 60 138 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1412 7195 988 AT&T
701 1331 8575 953 UUNET Technologies, Inc.
1239 954 3068 655 Sprint
3356 849 10940 675 Level 3 Communications, LLC
209 721 3534 508 Qwest
18566 691 192 8 Covad Communications
4323 690 559 199 Time Warner Communications, I
6197 679 442 268 BellSouth Network Solutions,
20115 628 350 331 Charter Communications
6198 548 354 196 BellSouth Network Solutions,
852 514 1127 404 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7843 493 597 120 Adelphia Corp.
7132 471 7834 324 Southwestern Bell Internet Se
2386 430 579 230 AT&T Data Communications Serv
690 397 58 267 Merit Network
4355 397 323 103 EarthLink, Inc.
27364 388 28 23 Armstrong Cable Services
376 380 343 112 Reseau Interordinateurs Scien
19029 373 168 247 New Edge Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 672 2038 563 UUNET - Commercial IP service
3301 338 1178 317 TeliaNet Sweden
3320 287 1965 235 Deutsche Telekom AG
8220 265 412 252 COLT Internet - International
680 242 2027 238 DFN-IP service G-WiN
1257 236 510 195 SWIPnet Swedish IP Network
719 233 288 105 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 192 449 189 Song Networks
786 175 1826 175 The JANET IP Service
8708 172 111 162 Romania Data Systems S.A.
5515 168 762 135 Sonera Solution Autonomous Sy
1273 167 172 99 Cable & Wireless Deutschland
25186 164 186 107 France Telecom Transpac's Tra
3215 163 800 78 France Telecom Transpac
5400 151 223 134 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 125 1037 65 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 375 123 64 ImpSat
8151 259 384 127 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 142 220 98 AVANTEL, S.A.
7303 138 52 31 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 132 90 92 Global One Communicaoes Ltda
11992 100 9 28 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
15311 78 18 38 Telefonica Empresas
4270 70 18 9 Red de Interconexion Universi
11311 70 7 17 Sinectis S.A.
14535 68 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 62 234 14 Telecomunicacoes da Bahia S.A
10292 62 6 26 TELECOMMUNICATIONS OF JAMAICA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 251 632 218 The Internet Solution
5536 105 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 33 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
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
15825 16 1 9 Network Computer Systems Auto
12258 15 3 10 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 691 683 Covad Communications
4134 661 545 Data Communications Bureau
4323 690 491 Time Warner Communications, I
6197 679 411 BellSouth Network Solutions,
701 1331 378 UUNET Technologies, Inc.
7843 493 373 Adelphia Corp.
27364 388 365 Armstrong Cable Services
6198 548 352 BellSouth Network Solutions,
22909 372 346 Comcast Cable Corporation
5668 352 337 Century Telephone
22773 350 313 Cox Communications, Inc. Atla
6140 375 311 ImpSat
4755 363 304 Videsh Sanchar Nigam Ltd. Aut
1239 954 299 Sprint
20115 628 297 Charter Communications
4355 397 294 EarthLink, Inc.
6347 371 289 SAVVIS Communications Corpora
9583 390 285 Satyam Infoway Ltd.,
9443 356 275 Primus Telecommunications
376 380 268 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 /11:14 /12:57
/13:107 /14:292 /15:509 /16:7631 /17:1938 /18:3516
/19:9072 /20:9504 /21:6941 /22:9736 /23:11232 /24:73812
/25:199 /26:297 /27:162 /28:31 /29:8 /30:41
/31:0 /32:15
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 674 691 Covad Communications
6197 520 679 BellSouth Network Solutions,
7018 506 1412 AT&T
3356 459 849 Level 3 Communications, LLC
702 408 672 UUNET - Commercial IP service
6198 396 548 BellSouth Network Solutions,
7066 394 499 Virginia Polytechnic Institut
27364 381 388 Armstrong Cable Services
20115 380 628 Charter Communications
701 365 1331 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 350 954 Sprint
5668 311 352 Century Telephone
4766 266 444 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 373 New Edge Networks
9583 237 390 Satyam Infoway Ltd.,
3320 235 287 Deutsche Telekom AG
6517 230 252 Yipes Communications, Inc.
13609 220 260 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:800 13:1 15:4 16:1 17:3
20:6 24:831 32:84 38:52 40:56 44:3
55:1 56:1 57:12 61:386 62:484 63:1837
64:1881 65:1935 66:2377 67:279 68:559 69:434
80:476 81:259 82:124 83:10 128:137 129:242
130:73 131:78 132:16 134:177 135:16 136:186
137:107 138:152 139:44 140:149 141:135 142:109
143:49 144:75 145:37 146:289 147:76 148:369
149:85 150:97 151:62 152:215 153:60 154:1
155:125 156:62 157:57 158:128 159:143 160:51
161:55 162:376 163:80 164:323 165:163 166:111
167:210 168:210 169:99 170:302 171:8 192:5529
193:2633 194:2017 195:1354 196:529 198:3651 199:2960
200:3183 201:7 202:4482 203:5477 204:2988 205:1986
206:2253 207:2632 208:2386 209:2901 210:1163 211:485
212:920 213:1110 214:26 215:26 216:3338 217:859
218:154 219:105 220:195 221:19 222:6
End of report
