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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 11 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 134526
Prefixes after maximum aggregation: 82275
Unique aggregates announced to Internet: 65252
Total ASes present in the Internet Routing Table: 16805
Origin-only ASes present in the Internet Routing Table: 14588
Origin ASes announcing only one prefix: 6737
Transit ASes present in the Internet Routing Table: 2217
Transit-only ASes present in the Internet Routing Table: 67
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 16
Number of addresses announced to Internet: 1282540068
Equivalent to 76 /8s, 114 /16s and 2 /24s
Percentage of available address space announced: 34.6
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 59924
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25020
Total APNIC prefixes after maximum aggregation: 13295
Prefixes being announced from the APNIC address blocks: 23397
Unique aggregates announced from the APNIC address blocks: 13438
APNIC Region origin ASes present in the Internet Routing Table: 2016
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: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 138041856
Equivalent to 8 /8s, 58 /16s and 90 /24s
Percentage of available APNIC address space announced: 74.4
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: 78135
Total ARIN prefixes after maximum aggregation: 48386
Prefixes being announced from the ARIN address blocks: 60516
Unique aggregates announced from the ARIN address blocks: 21035
ARIN Region origin ASes present in the Internet Routing Table: 9011
ARIN Region origin ASes announcing only one prefix: 3192
ARIN Region transit ASes present in the Internet Routing Table: 879
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 219522080
Equivalent to 13 /8s, 21 /16s and 164 /24s
Percentage of available ARIN address space announced: 72.7
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: 24480
Total RIPE prefixes after maximum aggregation: 17696
Prefixes being announced from the RIPE address blocks: 21235
Unique aggregates announced from the RIPE address blocks: 14076
RIPE Region origin ASes present in the Internet Routing Table: 5252
RIPE Region origin ASes announcing only one prefix: 2819
RIPE Region transit ASes present in the Internet Routing Table: 902
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 153140992
Equivalent to 9 /8s, 32 /16s and 191 /24s
Percentage of available RIPE address space announced: 70.2
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: 5692
Total LACNIC prefixes after maximum aggregation: 2219
Prefixes being announced from the LACNIC address blocks: 5342
Unique aggregates announced from the LACNIC address blocks: 3389
LACNIC Region origin ASes present in the Internet Routing Table: 368
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: 5.2
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14348800
Equivalent to 0 /8s, 218 /16s and 242 /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: 1197
Total AfriNIC prefixes after maximum aggregation: 679
Prefixes being announced from the AfriNIC address blocks: 741
Unique aggregates announced from the AfriNIC address blocks: 559
AfriNIC Region origin ASes present in the Internet Routing Table: 91
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: 16
Number of AfriNIC addresses announced to Internet: 1770496
Equivalent to 0 /8s, 27 /16s and 4 /24s
Percentage of available AfriNIC address space announced: 10.6
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 628 Telstra Pty Ltd
4134 650 2573 112 Data Communications Bureau
4766 449 2914 245 Korea Internet Exchange for "
9583 383 38 95 Satyam Infoway Ltd.,
2907 361 1847 338 SINET Japan
4755 360 130 59 Videsh Sanchar Nigam Ltd. Aut
9443 354 70 81 Primus Telecommunications
703 338 374 261 UUNET
17557 326 23 169 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 295 274 240 connect.com.au pty ltd
7474 270 304 210 Optus Communications Pty Ltd
9942 241 70 138 COMindico Australia
9929 228 155 30 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9498 194 30 36 BHARTI BT INTERNET LTD.
4837 169 1571 102 chinanet IDC center beijing n
9304 164 157 20 Hutchison Telecom (HK)
4739 151 60 138 Commerical Internet eXchange
17964 149 119 56 Beijing Dian-Xin-Tong Network
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1412 7203 987 AT&T
701 1341 8575 959 UUNET Technologies, Inc.
1239 931 3067 642 Sprint
3356 851 10945 680 Level 3 Communications, LLC
209 718 3532 506 Qwest
18566 691 192 8 Covad Communications
4323 688 558 200 Time Warner Communications, I
6197 677 442 272 BellSouth Network Solutions,
20115 625 347 332 Charter Communications
6198 546 354 196 BellSouth Network Solutions,
852 514 1123 401 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7843 491 585 119 Adelphia Corp.
7132 468 7834 321 Southwestern Bell Internet Se
2386 433 579 231 AT&T Data Communications Serv
690 397 58 267 Merit Network
4355 397 323 103 EarthLink, Inc.
27364 388 28 23 Armstrong Cable Services
376 381 359 114 Reseau Interordinateurs Scien
19029 374 168 248 New Edge Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 677 2039 566 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 190 447 188 Song Networks
786 175 1826 175 The JANET IP Service
8708 172 111 162 Romania Data Systems S.A.
1273 169 172 102 Cable & Wireless Deutschland
5515 168 762 135 Sonera Solution Autonomous Sy
3215 166 800 79 France Telecom Transpac
25186 166 186 109 France Telecom Transpac's Tra
5400 151 223 134 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 134 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 137 51 31 Telecom Argentina Stet-France
6505 132 90 92 Global One Communicaoes Ltda
6147 124 78 20 Telefonica Del Peru
11992 105 41 33 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 78 5 20 Chilesat Servicios Empresari
15311 78 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 70 7 17 Sinectis S.A.
14535 67 5 14 Techtel S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
14420 64 4 23 ANDINATEL S.A.
10292 62 6 26 TELECOMMUNICATIONS OF JAMAICA
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 250 632 217 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
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
8524 16 2 4 AUCEGYPT Autonomous System
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
12258 15 3 10 Vodacom Internet Company
17148 14 1 8 First National Bank
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 691 683 Covad Communications
4134 650 538 Data Communications Bureau
4323 688 488 Time Warner Communications, I
6197 677 405 BellSouth Network Solutions,
701 1341 382 UUNET Technologies, Inc.
7843 491 372 Adelphia Corp.
27364 388 365 Armstrong Cable Services
6198 546 350 BellSouth Network Solutions,
5668 349 334 Century Telephone
22909 361 333 Comcast Cable Corporation
22773 350 313 Cox Communications, Inc. Atla
6140 375 311 ImpSat
4755 360 301 Videsh Sanchar Nigam Ltd. Aut
4355 397 294 EarthLink, Inc.
20115 625 293 Charter Communications
1239 931 289 Sprint
9583 383 288 Satyam Infoway Ltd.,
6347 368 287 SAVVIS Communications Corpora
9443 354 273 Primus Telecommunications
376 381 267 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
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 /12:58
/13:106 /14:291 /15:509 /16:7620 /17:1923 /18:3502
/19:9025 /20:9463 /21:6894 /22:9678 /23:11203 /24:73478
/25:197 /26:282 /27:160 /28:30 /29:8 /30:42
/31:0 /32:15
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 674 691 Covad Communications
6197 517 677 BellSouth Network Solutions,
7018 504 1412 AT&T
3356 459 851 Level 3 Communications, LLC
702 413 677 UUNET - Commercial IP service
6198 394 546 BellSouth Network Solutions,
7066 394 499 Virginia Polytechnic Institut
27364 381 388 Armstrong Cable Services
20115 380 625 Charter Communications
701 374 1341 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 332 931 Sprint
5668 308 349 Century Telephone
4766 271 449 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 374 New Edge Networks
3320 235 287 Deutsche Telekom AG
6517 230 252 Yipes Communications, Inc.
9583 229 383 Satyam Infoway Ltd.,
13609 220 260 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:797 13:1 15:4 16:1 17:3
20:6 24:834 32:84 38:52 40:55 44:3
55:1 56:1 57:13 61:384 62:483 63:1824
64:1878 65:1925 66:2381 67:279 68:565 69:433
80:441 81:242 82:118 83:10 128:141 129:247
130:71 131:79 132:16 134:176 135:16 136:132
137:107 138:152 139:44 140:148 141:135 142:105
143:49 144:79 145:37 146:285 147:75 148:366
149:84 150:102 151:62 152:214 153:60 154:1
155:127 156:62 157:49 158:148 159:142 160:50
161:55 162:375 163:75 164:323 165:162 166:111
167:211 168:208 169:99 170:302 171:8 192:5526
193:2621 194:2015 195:1348 196:525 198:3648 199:2960
200:3178 201:7 202:4404 203:5462 204:2988 205:1990
206:2261 207:2614 208:2395 209:2893 210:1147 211:468
212:917 213:1076 214:26 215:26 216:3348 217:852
218:154 219:101 220:192 221:19 222:6
End of report
