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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 15 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128745
Prefixes after maximum aggregation: 80555
Unique aggregates announced to Internet: 62151
Total ASes present in the Internet Routing Table: 15985
Origin-only ASes present in the Internet Routing Table: 13859
Origin ASes announcing only one prefix: 6299
Transit ASes present in the Internet Routing Table: 2126
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 19
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: 1246681160
Equivalent to 74 /8s, 78 /16s and 216 /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: 56982
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22892
Total APNIC prefixes after maximum aggregation: 12877
Prefixes being announced from the APNIC address blocks: 21292
Unique aggregates announced from the APNIC address blocks: 12411
APNIC Region origin ASes present in the Internet Routing Table: 1910
APNIC Region origin ASes announcing only one prefix: 547
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 123715584
Equivalent to 7 /8s, 95 /16s and 192 /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: 77259
Total ARIN prefixes after maximum aggregation: 48706
Prefixes being announced from the ARIN address blocks: 54868
Unique aggregates announced from the ARIN address blocks: 17400
ARIN Region origin ASes present in the Internet Routing Table: 8724
ARIN Region origin ASes announcing only one prefix: 3000
ARIN Region transit ASes present in the Internet Routing Table: 849
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198150176
Equivalent to 11 /8s, 207 /16s and 136 /24s
Percentage of available ARIN address space announced: 73.8
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: 23093
Total RIPE prefixes after maximum aggregation: 16725
Prefixes being announced from the RIPE address blocks: 19534
Unique aggregates announced from the RIPE address blocks: 13022
RIPE Region origin ASes present in the Internet Routing Table: 4928
RIPE Region origin ASes announcing only one prefix: 2648
RIPE Region transit ASes present in the Internet Routing Table: 870
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 137362752
Equivalent to 8 /8s, 47 /16s and 253 /24s
Percentage of available RIPE address space announced: 74.4
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: 5498
Total LACNIC prefixes after maximum aggregation: 2247
Prefixes being announced from the LACNIC address blocks: 4978
Unique aggregates announced from the LACNIC address blocks: 3207
LACNIC Region origin ASes present in the Internet Routing Table: 351
LACNIC Region origin ASes announcing only one prefix: 104
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13362944
Equivalent to 0 /8s, 203 /16s and 231 /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 966 1110 683 Telstra Pty Ltd
4755 397 134 72 Videsh Sanchar Nigam Ltd. Aut
2907 368 1879 345 SINET Japan
4134 360 2230 109 Data Communications Bureau
703 333 356 266 UUNET
2764 296 290 259 connect.com.au pty ltd
17557 282 19 143 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
7474 261 305 207 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
4538 209 1714 21 China Education and Research
9800 203 332 52 CHINA UNICOM
9942 195 69 120 COMindico Australia
9929 188 160 36 China Netcom Corp.
9498 185 20 18 BHARTI BT INTERNET LTD.
9443 182 62 81 Primus Telecommunications
17642 154 40 116 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 1367 7065 947 AT&T
3908 941 1561 512 Supernet, Inc.
1239 920 3003 665 Sprint
18566 708 176 8 Covad Communications
4323 678 575 197 Time Warner Communications, I
6197 651 442 247 BellSouth Network Solutions,
3356 593 10829 496 Level 3 Communications, LLC
6198 583 329 192 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
852 516 1123 410 Telus Advanced Communications
209 513 2146 292 Qwest
7066 509 207 270 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 411 59 276 Merit Network
705 400 184 244 UUNET Technologies, Inc.
4355 395 332 108 EarthLink, Inc.
2386 381 508 198 AT&T Data Communications Serv
376 359 359 115 Reseau Interordinateurs Scien
6347 345 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 710 2100 590 UUNET - Commercial IP service
3301 298 1169 286 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 243 438 191 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
3215 192 705 99 France Telecom Transpac
5400 187 173 135 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
786 180 1890 180 The JANET IP Service
8708 158 111 154 Romania Data Systems S.A.
3303 149 556 142 Swisscom Ltd
3246 128 376 126 Song Networks
12302 127 18 34 MobiFon S.A.
3269 119 853 65 TELECOM ITALIA
2856 115 1293 106 BTnet UK Regional network
25186 113 160 77 France Telecom Transpac's Tra
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 235 367 123 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
11992 87 25 29 Integrated Systems
6147 86 70 19 Telefonica Del Peru
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 68 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
4926 57 4 48 Telintar S.A.
10292 57 5 28 TELECOMMUNICATIONS OF JAMAICA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 708 700 Covad Communications
4323 678 481 Time Warner Communications, I
3908 941 429 Supernet, Inc.
7018 1367 420 AT&T
6197 651 404 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 583 391 BellSouth Network Solutions,
4755 397 325 Videsh Sanchar Nigam Ltd. Aut
27364 315 292 Armstrong Cable Services
5668 307 292 Century Telephone
22909 302 290 Comcast Cable Corporation
4355 395 287 EarthLink, Inc.
1221 966 283 Telstra Pty Ltd
6347 345 265 SAVVIS Communications Corpora
1239 920 255 Sprint
22773 289 252 Cox Communications, Inc. Atla
4134 360 251 Data Communications Bureau
376 359 244 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 /14:268 /15:469 /16:7439 /17:1781 /18:3201
/19:8496 /20:8935 /21:6574 /22:9428 /23:10850 /24:70413
/25:165 /26:209 /27:155 /28:43 /29:24 /30:58
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 702 708 Covad Communications
3908 598 941 Supernet, Inc.
6197 511 651 BellSouth Network Solutions,
7018 482 1367 AT&T
6198 461 583 BellSouth Network Solutions,
701 442 1452 UUNET Technologies, Inc.
702 428 710 UUNET - Commercial IP service
7066 402 509 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 328 920 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 284 593 Level 3 Communications, LLC
5668 273 307 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 220 278 Deutsche Telekom AG
4355 217 395 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 204 513 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 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 61:329 62:444
63:1876 64:1808 65:1988 66:2159 67:266 68:392
69:280 80:417 81:175 82:19 128:147 129:150
130:63 131:82 132:19 134:166 135:10 136:180
137:120 138:143 139:51 140:165 141:137 142:101
143:48 144:80 145:33 146:278 147:68 148:302
149:79 150:121 151:66 152:212 153:58 154:7
155:129 156:58 157:53 158:140 159:142 160:46
161:69 162:363 163:68 164:317 165:153 166:100
167:305 168:176 169:96 170:315 171:9 192:5436
193:2447 194:1996 195:1272 196:478 198:3577 199:2840
200:3016 202:4029 203:5299 204:2989 205:2049 206:2291
207:2524 208:2575 209:2782 210:924 211:383 212:932
213:950 214:15 215:22 216:3241 217:764 218:111
219:41 220:115 221:12 222:1
End of report
