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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 17 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128848
Prefixes after maximum aggregation: 80609
Unique aggregates announced to Internet: 62199
Total ASes present in the Internet Routing Table: 15992
Origin-only ASes present in the Internet Routing Table: 13889
Origin ASes announcing only one prefix: 6300
Transit ASes present in the Internet Routing Table: 2103
Transit-only ASes present in the Internet Routing Table: 70
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 22
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: 14
Number of addresses announced to Internet: 1246835244
Equivalent to 74 /8s, 81 /16s and 50 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 57012
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22894
Total APNIC prefixes after maximum aggregation: 12878
Prefixes being announced from the APNIC address blocks: 21318
Unique aggregates announced from the APNIC address blocks: 12455
APNIC Region origin ASes present in the Internet Routing Table: 1914
APNIC Region origin ASes announcing only one prefix: 548
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 123768064
Equivalent to 7 /8s, 96 /16s and 141 /24s
Percentage of available APNIC address space announced: 66.7
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: 77318
Total ARIN prefixes after maximum aggregation: 48725
Prefixes being announced from the ARIN address blocks: 54888
Unique aggregates announced from the ARIN address blocks: 17408
ARIN Region origin ASes present in the Internet Routing Table: 8728
ARIN Region origin ASes announcing only one prefix: 3006
ARIN Region transit ASes present in the Internet Routing Table: 839
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198309920
Equivalent to 11 /8s, 209 /16s and 248 /24s
Percentage of available ARIN address space announced: 73.9
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 23140
Total RIPE prefixes after maximum aggregation: 16758
Prefixes being announced from the RIPE address blocks: 19577
Unique aggregates announced from the RIPE address blocks: 13057
RIPE Region origin ASes present in the Internet Routing Table: 4932
RIPE Region origin ASes announcing only one prefix: 2644
RIPE Region transit ASes present in the Internet Routing Table: 861
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 137664576
Equivalent to 8 /8s, 52 /16s and 152 /24s
Percentage of available RIPE address space announced: 74.6
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, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5493
Total LACNIC prefixes after maximum aggregation: 2248
Prefixes being announced from the LACNIC address blocks: 4989
Unique aggregates announced from the LACNIC address blocks: 3201
LACNIC Region origin ASes present in the Internet Routing Table: 349
LACNIC Region origin ASes announcing only one prefix: 102
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13359872
Equivalent to 0 /8s, 203 /16s and 219 /24s
Percentage of available LACNIC address space announced: 39.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 963 1109 681 Telstra Pty Ltd
4755 388 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 368 1879 345 SINET Japan
4134 359 2229 108 Data Communications Bureau
703 332 356 266 UUNET
2764 296 289 259 connect.com.au pty ltd
17557 286 20 143 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
7474 265 306 211 Optus Communications Pty Ltd
9583 243 43 9 Satyam Infoway Ltd.,
4766 241 2462 176 Korea Internet Exchange for "
3786 233 773 203 DACOM Corporation
9800 202 331 51 CHINA UNICOM
9942 196 69 118 COMindico Australia
9929 188 160 36 China Netcom Corp.
9498 185 20 18 BHARTI BT INTERNET LTD.
9443 182 62 81 Primus Telecommunications
4538 176 1714 21 China Education and Research
17642 153 40 115 RequestDSL BGP AS# for Sydney
4739 143 58 132 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1452 8667 1008 UUNET Technologies, Inc.
7018 1364 7081 945 AT&T
3908 939 1561 511 Supernet, Inc.
1239 921 3004 660 Sprint
18566 709 176 8 Covad Communications
4323 679 576 198 Time Warner Communications, I
6197 644 454 240 BellSouth Network Solutions,
3356 592 10813 495 Level 3 Communications, LLC
6198 574 333 195 BellSouth Network Solutions,
7843 528 470 141 Adelphia Corp.
852 517 1123 411 Telus Advanced Communications
209 516 2148 291 Qwest
7066 510 207 271 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 411 59 276 Merit Network
705 398 184 242 UUNET Technologies, Inc.
4355 394 331 106 EarthLink, Inc.
2386 381 508 199 AT&T Data Communications Serv
376 360 359 115 Reseau Interordinateurs Scien
6347 343 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 711 2100 592 UUNET - Commercial IP service
3301 299 1169 286 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 244 438 191 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
719 193 307 123 LANLINK autonomous system
5400 187 173 135 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
3215 184 704 95 France Telecom Transpac
786 176 1857 176 The JANET IP Service
8708 158 111 154 Romania Data Systems S.A.
3303 149 556 142 Swisscom Ltd
3246 127 375 125 Song Networks
12302 127 18 34 MobiFon S.A.
3269 121 885 66 TELECOM ITALIA
25186 121 161 81 France Telecom Transpac's Tra
2856 115 1293 106 BTnet UK Regional network
2647 101 4225 49 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 339 103 98 ImpSat
8151 233 366 122 UniNet S.A. de C.V.
7303 219 41 49 Telecom Argentina Stet-France
11172 184 77 42 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
6505 139 91 97 Global One Communicaoes Ltda
6503 129 205 93 AVANTEL, S.A.
10620 123 8 26 TVCABLE BOGOTA
11340 103 3 29 Red Universitaria Nacional
6147 96 70 19 Telefonica Del Peru
11992 86 24 30 Integrated Systems
8065 83 8 17 Empresas Publicas de Medellin
15311 76 16 39 Telefonica Empresas
6535 75 5 18 Chilesat Servicios Empresari
11830 75 22 24 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
5639 57 7 8 Telecommunications Services o
10292 57 5 28 TELECOMMUNICATIONS OF JAMAICA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 709 701 Covad Communications
4323 679 481 Time Warner Communications, I
3908 939 428 Supernet, Inc.
7018 1364 419 AT&T
6197 644 404 BellSouth Network Solutions,
7843 528 387 Adelphia Corp.
6198 574 379 BellSouth Network Solutions,
4755 388 317 Videsh Sanchar Nigam Ltd. Aut
27364 315 292 Armstrong Cable Services
5668 306 291 Century Telephone
22909 302 290 Comcast Cable Corporation
4355 394 288 EarthLink, Inc.
1221 963 282 Telstra Pty Ltd
22773 292 278 Cox Communications, Inc. Atla
6347 343 263 SAVVIS Communications Corpora
1239 921 261 Sprint
4134 359 251 Data Communications Bureau
376 360 245 Reseau Interordinateurs Scien
6140 339 241 ImpSat
25844 243 241 Skadden, Arps, Slate, Meagher
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
65400 PRIVATE 149.165.240.0/21 11537 University Corporati
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
65100 PRIVATE 210.104.28.0/25 9768 Korea 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
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
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.153.136.0/21 568 DISO-UNRRA
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 /9:4 /10:6 /11:12 /12:55
/13:98 /14:269 /15:469 /16:7436 /17:1782 /18:3205
/19:8503 /20:8929 /21:6553 /22:9415 /23:10857 /24:70547
/25:162 /26:205 /27:153 /28:43 /29:24 /30:59
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 703 709 Covad Communications
3908 596 939 Supernet, Inc.
6197 502 644 BellSouth Network Solutions,
7018 483 1364 AT&T
6198 447 574 BellSouth Network Solutions,
701 442 1452 UUNET Technologies, Inc.
702 429 711 UUNET - Commercial IP service
7066 402 510 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 325 921 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 284 592 Level 3 Communications, LLC
5668 272 306 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 220 278 Deutsche Telekom AG
4355 218 394 EarthLink, Inc.
7843 210 528 Adelphia Corp.
209 205 516 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:716 13:1 15:6 16:1 17:2
20:6 24:819 25:1 32:83 38:50 40:23
43:1 44:2 55:1 57:14 61:332 62:448
63:1879 64:1803 65:1983 66:2164 67:264 68:395
69:273 80:419 81:179 82:34 128:150 129:156
130:63 131:82 132:19 134:166 135:10 136:180
137:120 138:132 139:48 140:164 141:137 142:101
143:48 144:86 145:33 146:279 147:67 148:302
149:79 150:121 151:60 152:212 153:59 154:7
155:129 156:58 157:52 158:140 159:143 160:46
161:69 162:363 163:68 164:319 165:152 166:100
167:305 168:178 169:95 170:315 171:9 192:5443
193:2445 194:1992 195:1278 196:481 198:3574 199:2835
200:3025 201:1 202:4064 203:5314 204:2999 205:2053
206:2287 207:2525 208:2560 209:2786 210:928 211:384
212:938 213:952 214:15 215:22 216:3273 217:768
218:112 219:41 220:115 221:13 222:1
End of report
