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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 15 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135069
Prefixes after maximum aggregation: 82386
Unique aggregates announced to Internet: 65385
Total ASes present in the Internet Routing Table: 16848
Origin-only ASes present in the Internet Routing Table: 14627
Origin ASes announcing only one prefix: 6765
Transit ASes present in the Internet Routing Table: 2221
Transit-only ASes present in the Internet Routing Table: 71
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: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 16
Number of addresses announced to Internet: 1283397092
Equivalent to 76 /8s, 127 /16s and 21 /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: 60233
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25237
Total APNIC prefixes after maximum aggregation: 13387
Prefixes being announced from the APNIC address blocks: 23594
Unique aggregates announced from the APNIC address blocks: 13553
APNIC Region origin ASes present in the Internet Routing Table: 2027
APNIC Region origin ASes announcing only one prefix: 604
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: 15
Number of APNIC addresses announced to Internet: 138193920
Equivalent to 8 /8s, 60 /16s and 172 /24s
Percentage of available APNIC address space announced: 74.5
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: 78285
Total ARIN prefixes after maximum aggregation: 48410
Prefixes being announced from the ARIN address blocks: 60570
Unique aggregates announced from the ARIN address blocks: 21092
ARIN Region origin ASes present in the Internet Routing Table: 9034
ARIN Region origin ASes announcing only one prefix: 3217
ARIN Region transit ASes present in the Internet Routing Table: 881
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 220211232
Equivalent to 13 /8s, 32 /16s and 40 /24s
Percentage of available ARIN address space announced: 72.9
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: 24638
Total RIPE prefixes after maximum aggregation: 17710
Prefixes being announced from the RIPE address blocks: 21393
Unique aggregates announced from the RIPE address blocks: 14094
RIPE Region origin ASes present in the Internet Routing Table: 5260
RIPE Region origin ASes announcing only one prefix: 2820
RIPE Region transit ASes present in the Internet Routing Table: 904
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 153336576
Equivalent to 9 /8s, 35 /16s and 187 /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: 5694
Total LACNIC prefixes after maximum aggregation: 2197
Prefixes being announced from the LACNIC address blocks: 5338
Unique aggregates announced from the LACNIC address blocks: 3311
LACNIC Region origin ASes present in the Internet Routing Table: 365
LACNIC Region origin ASes announcing only one prefix: 98
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 14342656
Equivalent to 0 /8s, 218 /16s and 218 /24s
Percentage of available LACNIC address space announced: 42.7
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1211
Total AfriNIC prefixes after maximum aggregation: 682
Prefixes being announced from the AfriNIC address blocks: 749
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: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 4.9
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 883 1102 628 Telstra Pty Ltd
4134 659 2600 115 Data Communications Bureau
4766 444 2914 242 Korea Internet Exchange for "
9583 388 37 104 Satyam Infoway Ltd.,
4755 364 130 59 Videsh Sanchar Nigam Ltd. Aut
2907 359 1847 335 SINET Japan
9443 356 70 81 Primus Telecommunications
703 339 374 261 UUNET
17557 338 24 172 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 297 274 241 connect.com.au pty ltd
7474 271 304 211 Optus Communications Pty Ltd
9942 241 70 138 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 1411 7195 987 AT&T
701 1333 8575 955 UUNET Technologies, Inc.
1239 953 3068 656 Sprint
3356 850 10940 675 Level 3 Communications, LLC
209 720 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 626 348 332 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
4355 397 323 103 EarthLink, Inc.
690 396 58 266 Merit Network
27364 388 28 23 Armstrong Cable Services
376 380 343 113 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
702 676 2039 565 UUNET - Commercial IP service
3301 338 1178 317 TeliaNet Sweden
3320 287 1965 235 Deutsche Telekom AG
8220 264 412 251 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 166 172 99 Cable & Wireless Deutschland
25186 165 186 108 France Telecom Transpac's Tra
3215 164 800 79 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 260 384 127 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 141 220 97 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 38 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
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 659 544 Data Communications Bureau
4323 690 491 Time Warner Communications, I
6197 679 411 BellSouth Network Solutions,
701 1333 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 351 336 Century Telephone
22773 350 313 Cox Communications, Inc. Atla
6140 375 311 ImpSat
4755 364 305 Videsh Sanchar Nigam Ltd. Aut
1239 953 297 Sprint
20115 626 294 Charter Communications
4355 397 294 EarthLink, Inc.
6347 371 289 SAVVIS Communications Corpora
9583 388 284 Satyam Infoway Ltd.,
9443 356 275 Primus Telecommunications
376 380 267 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65021 PRIVATE 128.216.1.0/24 619 Department of Navy
65021 PRIVATE 128.216.4.0/24 619 Department of Navy
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 /14:291 /15:509 /16:7623 /17:1939 /18:3519
/19:9069 /20:9495 /21:6935 /22:9740 /23:11226 /24:73785
/25:195 /26:282 /27:161 /28:30 /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 1411 AT&T
3356 460 850 Level 3 Communications, LLC
702 412 676 UUNET - Commercial IP service
6198 396 548 BellSouth Network Solutions,
7066 394 499 Virginia Polytechnic Institut
27364 381 388 Armstrong Cable Services
20115 380 626 Charter Communications
701 365 1333 UUNET Technologies, Inc.
690 360 396 Merit Network
1239 349 953 Sprint
5668 310 351 Century Telephone
4766 266 444 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 373 New Edge Networks
3320 235 287 Deutsche Telekom AG
9583 235 388 Satyam Infoway Ltd.,
6517 230 252 Yipes Communications, Inc.
13609 220 260 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:801 13:1 15:4 16:1 17:3
20:6 24:832 32:84 38:52 40:56 44:3
55:1 56:1 57:12 61:385 62:481 63:1827
64:1883 65:1931 66:2372 67:279 68:560 69:433
80:478 81:259 82:121 83:10 128:139 129:243
130:73 131:79 132:16 134:177 135:16 136:186
137:107 138:151 139:46 140:149 141:135 142:109
143:47 144:76 145:37 146:289 147:75 148:369
149:85 150:97 151:62 152:214 153:60 154:1
155:127 156:62 157:57 158:147 159:143 160:51
161:55 162:376 163:78 164:323 165:163 166:111
167:211 168:210 169:99 170:301 171:8 192:5521
193:2632 194:2021 195:1354 196:525 198:3651 199:2959
200:3172 201:7 202:4501 203:5463 204:2991 205:1989
206:2257 207:2623 208:2399 209:2888 210:1161 211:481
212:919 213:1098 214:26 215:26 216:3347 217:860
218:154 219:101 220:195 221:19 222:6
End of report
