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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 01 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136087
Prefixes after maximum aggregation: 82768
Unique aggregates announced to Internet: 65886
Total ASes present in the Internet Routing Table: 16963
Origin-only ASes present in the Internet Routing Table: 14706
Origin ASes announcing only one prefix: 6797
Transit ASes present in the Internet Routing Table: 2257
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1290885092
Equivalent to 76 /8s, 241 /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: 60938
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25675
Total APNIC prefixes after maximum aggregation: 13531
Prefixes being announced from the APNIC address blocks: 24000
Unique aggregates announced from the APNIC address blocks: 13526
APNIC Region origin ASes present in the Internet Routing Table: 2034
APNIC Region origin ASes announcing only one prefix: 608
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: 140315904
Equivalent to 8 /8s, 93 /16s and 13 /24s
Percentage of available APNIC address space announced: 75.6
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: 78764
Total ARIN prefixes after maximum aggregation: 48600
Prefixes being announced from the ARIN address blocks: 60775
Unique aggregates announced from the ARIN address blocks: 21353
ARIN Region origin ASes present in the Internet Routing Table: 9075
ARIN Region origin ASes announcing only one prefix: 3224
ARIN Region transit ASes present in the Internet Routing Table: 893
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221093152
Equivalent to 13 /8s, 45 /16s and 157 /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: 24700
Total RIPE prefixes after maximum aggregation: 17757
Prefixes being announced from the RIPE address blocks: 21579
Unique aggregates announced from the RIPE address blocks: 14262
RIPE Region origin ASes present in the Internet Routing Table: 5314
RIPE Region origin ASes announcing only one prefix: 2839
RIPE Region transit ASes present in the Internet Routing Table: 931
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157414400
Equivalent to 9 /8s, 97 /16s and 244 /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: 5742
Total LACNIC prefixes after maximum aggregation: 2196
Prefixes being announced from the LACNIC address blocks: 5421
Unique aggregates announced from the LACNIC address blocks: 3402
LACNIC Region origin ASes present in the Internet Routing Table: 370
LACNIC Region origin ASes announcing only one prefix: 101
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: 14389504
Equivalent to 0 /8s, 219 /16s and 145 /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: 1205
Total AfriNIC prefixes after maximum aggregation: 684
Prefixes being announced from the AfriNIC address blocks: 739
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: 11
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 697 2975 117 Data Communications Bureau
4766 461 2916 251 Korea Internet Exchange for "
9583 428 38 107 Satyam Infoway Ltd.,
4755 367 129 53 Videsh Sanchar Nigam Ltd. Aut
9443 355 69 80 Primus Telecommunications
2907 350 1828 327 SINET Japan
703 341 374 263 UUNET
17557 326 23 165 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
2764 296 275 241 connect.com.au pty ltd
9929 289 155 30 China Netcom Corp.
7474 271 300 215 Optus Communications Pty Ltd
9942 226 71 129 COMindico Australia
9800 214 347 55 CHINA UNICOM
4780 188 193 26 Digital United Inc.
9498 185 31 39 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 153 23 44 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1417 6996 993 AT&T
701 1324 8561 953 UUNET Technologies, Inc.
1239 945 3040 641 Sprint
3356 882 10942 685 Level 3 Communications, LLC
209 729 3502 510 Qwest
4323 694 559 199 Time Warner Communications, I
18566 693 192 8 Covad Communications
6197 690 458 270 BellSouth Network Solutions,
20115 598 349 310 Charter Communications
6198 551 354 196 BellSouth Network Solutions,
7843 537 612 113 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7132 478 7838 329 Southwestern Bell Internet Se
2386 429 579 232 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
4355 396 323 103 EarthLink, Inc.
690 394 57 267 Merit Network
22909 380 839 26 Comcast Cable Corporation
376 377 343 113 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 670 2039 560 UUNET - Commercial IP service
3320 287 2477 235 Deutsche Telekom AG
3301 272 984 263 TeliaNet Sweden
8220 264 412 252 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 234 510 195 SWIPnet Swedish IP Network
719 231 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 195 451 193 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 131 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 379 123 64 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 139 220 93 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 70 18 9 Red de Interconexion Universi
11311 69 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
14988 25 16 1 Botswana Telecommunications C
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
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
2609 13 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 693 685 Covad Communications
4134 697 580 Data Communications Bureau
4323 694 495 Time Warner Communications, I
7843 537 424 Adelphia Corp.
6197 690 420 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1324 371 UUNET Technologies, Inc.
6198 551 355 BellSouth Network Solutions,
22909 380 354 Comcast Cable Corporation
5668 363 348 Century Telephone
9583 428 321 Satyam Infoway Ltd.,
22773 360 321 Cox Communications, Inc. Atla
6140 379 315 ImpSat
4755 367 314 Videsh Sanchar Nigam Ltd. Aut
1239 945 304 Sprint
4355 396 293 EarthLink, Inc.
20115 598 288 Charter Communications
6347 371 287 SAVVIS Communications Corpora
9443 355 275 Primus Telecommunications
17676 308 266 XTAGE CORPORATION
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 /8:19 /9:3 /10:6 /11:15 /12:57
/13:108 /14:293 /15:510 /16:7648 /17:1953 /18:3537
/19:9221 /20:9603 /21:6999 /22:9830 /23:11366 /24:74211
/25:191 /26:270 /27:161 /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 530 690 BellSouth Network Solutions,
7018 514 1417 AT&T
3356 486 882 Level 3 Communications, LLC
702 408 670 UUNET - Commercial IP service
6198 399 551 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 394 499 Virginia Polytechnic Institut
701 363 1324 UUNET Technologies, Inc.
690 357 394 Merit Network
1239 356 945 Sprint
20115 349 598 Charter Communications
5668 322 363 Century Telephone
4766 283 461 Korea Internet Exchange for "
9583 277 428 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
19029 239 368 New Edge Networks
3320 234 287 Deutsche Telekom AG
13609 232 272 Choice One Communications Inc
14824 232 257 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:819 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 61:378 62:479 63:1821
64:1902 65:1937 66:2499 67:287 68:589 69:462
80:465 81:256 82:146 83:21 128:139 129:263
130:93 131:78 132:16 134:181 135:16 136:189
137:105 138:148 139:42 140:146 141:147 142:109
143:49 144:89 145:40 146:298 147:77 148:371
149:90 150:96 151:63 152:216 153:62 154:1
155:125 156:61 157:55 158:146 159:153 160:50
161:55 162:374 163:80 164:326 165:164 166:98
167:211 168:211 169:101 170:293 171:8 192:5508
193:2638 194:2028 195:1362 196:523 198:3656 199:2984
200:3236 201:7 202:4518 203:5457 204:2981 205:1983
206:2221 207:2586 208:2320 209:2908 210:1265 211:526
212:910 213:1076 214:26 215:26 216:3337 217:890
218:160 219:105 220:196 221:25 222:14
End of report
