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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 31 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135897
Prefixes after maximum aggregation: 82565
Unique aggregates announced to Internet: 65519
Total ASes present in the Internet Routing Table: 16948
Origin-only ASes present in the Internet Routing Table: 14692
Origin ASes announcing only one prefix: 6786
Transit ASes present in the Internet Routing Table: 2256
Transit-only ASes present in the Internet Routing Table: 77
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1290033124
Equivalent to 76 /8s, 228 /16s and 87 /24s
Percentage of available address space announced: 34.8
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 60793
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25539
Total APNIC prefixes after maximum aggregation: 13374
Prefixes being announced from the APNIC address blocks: 23870
Unique aggregates announced from the APNIC address blocks: 13219
APNIC Region origin ASes present in the Internet Routing Table: 2035
APNIC Region origin ASes announcing only one prefix: 609
APNIC Region transit ASes present in the Internet Routing Table: 322
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 139418624
Equivalent to 8 /8s, 79 /16s and 92 /24s
Percentage of available APNIC address space announced: 75.1
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: 78642
Total ARIN prefixes after maximum aggregation: 48557
Prefixes being announced from the ARIN address blocks: 60671
Unique aggregates announced from the ARIN address blocks: 21320
ARIN Region origin ASes present in the Internet Routing Table: 9067
ARIN Region origin ASes announcing only one prefix: 3221
ARIN Region transit ASes present in the Internet Routing Table: 892
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221109024
Equivalent to 13 /8s, 45 /16s and 219 /24s
Percentage of available ARIN address space announced: 73.2
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: 24773
Total RIPE prefixes after maximum aggregation: 17756
Prefixes being announced from the RIPE address blocks: 21641
Unique aggregates announced from the RIPE address blocks: 14232
RIPE Region origin ASes present in the Internet Routing Table: 5308
RIPE Region origin ASes announcing only one prefix: 2831
RIPE Region transit ASes present in the Internet Routing Table: 927
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157377280
Equivalent to 9 /8s, 97 /16s and 99 /24s
Percentage of available RIPE address space announced: 72.2
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: 5738
Total LACNIC prefixes after maximum aggregation: 2195
Prefixes being announced from the LACNIC address blocks: 5419
Unique aggregates announced from the LACNIC address blocks: 3400
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: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14380800
Equivalent to 0 /8s, 219 /16s and 111 /24s
Percentage of available LACNIC address space announced: 42.9
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1203
Total AfriNIC prefixes after maximum aggregation: 683
Prefixes being announced from the AfriNIC address blocks: 738
Unique aggregates announced from the AfriNIC address blocks: 559
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 25
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: 1839616
Equivalent to 0 /8s, 28 /16s and 18 /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 866 1107 627 Telstra Pty Ltd
4134 696 2847 117 Data Communications Bureau
4766 461 2916 251 Korea Internet Exchange for "
9583 421 44 11 Satyam Infoway Ltd.,
4755 367 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 355 69 80 Primus Telecommunications
703 343 374 265 UUNET
17557 326 23 165 Pakistan Telecom
17676 304 4492 39 XTAGE CORPORATION
2764 296 275 241 connect.com.au pty ltd
7474 270 300 214 Optus Communications Pty Ltd
9929 255 155 30 China Netcom Corp.
9942 230 72 132 COMindico Australia
9800 214 347 55 CHINA UNICOM
4780 188 193 26 Digital United Inc.
9498 186 31 40 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
17974 156 32 81 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1415 6997 992 AT&T
701 1321 8577 950 UUNET Technologies, Inc.
1239 941 3024 639 Sprint
3356 882 10942 685 Level 3 Communications, LLC
209 726 3502 510 Qwest
4323 693 559 199 Time Warner Communications, I
18566 693 192 8 Covad Communications
6197 689 458 270 BellSouth Network Solutions,
20115 598 349 310 Charter Communications
6198 550 354 195 BellSouth Network Solutions,
7843 536 610 119 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7132 479 7846 329 Southwestern Bell Internet Se
2386 428 579 231 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
690 397 58 267 Merit Network
4355 396 323 103 EarthLink, Inc.
22909 380 839 26 Comcast Cable Corporation
376 377 343 110 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 669 2039 559 UUNET - Commercial IP service
3320 287 2477 235 Deutsche Telekom AG
3301 271 984 262 TeliaNet Sweden
8220 264 412 252 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 236 510 195 SWIPnet Swedish IP Network
719 231 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 194 451 192 Song Networks
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
3215 166 819 72 France Telecom Transpac
5515 166 762 133 Sonera Solution Autonomous Sy
25186 163 187 105 France Telecom Transpac's Tra
5400 151 225 136 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 129 1069 64 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 380 123 65 ImpSat
8151 265 373 131 UniNet S.A. de C.V.
11172 207 75 43 Servicios Alestra S.A de C.V
16814 159 11 6 NSS, S.A.
6503 140 220 94 AVANTEL, S.A.
7303 139 52 29 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 132 90 92 Global One Communicaoes Ltda
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
4270 71 18 9 Red de Interconexion Universi
11311 70 7 16 Sinectis S.A.
14535 69 6 5 Techtel S.A.
14420 65 4 24 ANDINATEL S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
7738 62 234 14 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 252 632 219 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
2561 54 6 2 Egyptian Universities Network
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
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
14988 22 16 1 Botswana Telecommunications C
8524 21 1 3 AUCEGYPT Autonomous System
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
20928 15 16 1 Noor Advanced Technologies AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 693 685 Covad Communications
4134 696 579 Data Communications Bureau
4323 693 494 Time Warner Communications, I
6197 689 419 BellSouth Network Solutions,
7843 536 417 Adelphia Corp.
9583 421 410 Satyam Infoway Ltd.,
27364 404 381 Armstrong Cable Services
701 1321 371 UUNET Technologies, Inc.
6198 550 355 BellSouth Network Solutions,
22909 380 354 Comcast Cable Corporation
5668 367 352 Century Telephone
22773 360 321 Cox Communications, Inc. Atla
6140 380 315 ImpSat
4755 367 314 Videsh Sanchar Nigam Ltd. Aut
1239 941 302 Sprint
4355 396 293 EarthLink, Inc.
20115 598 288 Charter Communications
6347 371 287 SAVVIS Communications Corpora
9443 355 275 Primus Telecommunications
376 377 267 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
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 /8:19 /9:3 /10:6 /11:15 /12:57
/13:107 /14:292 /15:510 /16:7642 /17:1957 /18:3528
/19:9221 /20:9595 /21:6999 /22:9822 /23:11336 /24:74078
/25:192 /26:269 /27:163 /28:30 /29:4 /30:41
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 676 693 Covad Communications
6197 529 689 BellSouth Network Solutions,
7018 511 1415 AT&T
3356 486 882 Level 3 Communications, LLC
702 407 669 UUNET - Commercial IP service
6198 398 550 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 394 499 Virginia Polytechnic Institut
701 361 1321 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 354 941 Sprint
20115 349 598 Charter Communications
5668 325 367 Century Telephone
4766 283 461 Korea Internet Exchange for "
9583 264 421 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
19029 241 370 New Edge Networks
3320 234 287 Deutsche Telekom AG
6517 227 249 Yipes Communications, Inc.
14824 226 251 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:812 13:1 15:4 16:1 17:3
20:7 24:813 32:83 38:56 40:54 44:3
55:1 56:1 57:13 61:376 62:480 63:1819
64:1887 65:1929 66:2480 67:286 68:587 69:461
80:473 81:255 82:146 83:21 128:141 129:260
130:93 131:78 132:16 134:181 135:16 136:189
137:104 138:149 139:40 140:146 141:146 142:109
143:49 144:86 145:40 146:298 147:77 148:371
149:90 150:96 151:62 152:217 153:62 154:1
155:125 156:62 157:55 158:145 159:153 160:50
161:55 162:374 163:80 164:325 165:164 166:98
167:211 168:209 169:101 170:294 171:8 192:5515
193:2638 194:2029 195:1358 196:522 198:3652 199:2981
200:3233 201:7 202:4497 203:5458 204:2981 205:1985
206:2206 207:2591 208:2319 209:2899 210:1202 211:518
212:937 213:1105 214:26 215:26 216:3322 217:890
218:159 219:105 220:196 221:25 222:15
End of report
