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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 14 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128751
Prefixes after maximum aggregation: 80511
Unique aggregates announced to Internet: 62185
Total ASes present in the Internet Routing Table: 15967
Origin-only ASes present in the Internet Routing Table: 13846
Origin ASes announcing only one prefix: 6291
Transit ASes present in the Internet Routing Table: 2121
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: 18
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: 1246144296
Equivalent to 74 /8s, 70 /16s and 167 /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: 56953
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22934
Total APNIC prefixes after maximum aggregation: 12855
Prefixes being announced from the APNIC address blocks: 21344
Unique aggregates announced from the APNIC address blocks: 12428
APNIC Region origin ASes present in the Internet Routing Table: 1910
APNIC Region origin ASes announcing only one prefix: 548
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 123608576
Equivalent to 7 /8s, 94 /16s and 30 /24s
Percentage of available APNIC address space announced: 66.6
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: 77279
Total ARIN prefixes after maximum aggregation: 48691
Prefixes being announced from the ARIN address blocks: 54862
Unique aggregates announced from the ARIN address blocks: 17411
ARIN Region origin ASes present in the Internet Routing Table: 8720
ARIN Region origin ASes announcing only one prefix: 2997
ARIN Region transit ASes present in the Internet Routing Table: 850
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198124832
Equivalent to 11 /8s, 207 /16s and 37 /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: 23047
Total RIPE prefixes after maximum aggregation: 16719
Prefixes being announced from the RIPE address blocks: 19490
Unique aggregates announced from the RIPE address blocks: 13025
RIPE Region origin ASes present in the Internet Routing Table: 4917
RIPE Region origin ASes announcing only one prefix: 2641
RIPE Region transit ASes present in the Internet Routing Table: 866
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 137312832
Equivalent to 8 /8s, 47 /16s and 58 /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: 5488
Total LACNIC prefixes after maximum aggregation: 2246
Prefixes being announced from the LACNIC address blocks: 4986
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: 105
LACNIC Region transit ASes present in the Internet Routing Table: 73
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13350400
Equivalent to 0 /8s, 203 /16s and 182 /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 968 1110 685 Telstra Pty Ltd
4755 397 134 71 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 295 21 147 Pakistan Telecom
17676 272 4012 33 XTAGE CORPORATION
7474 262 305 208 Optus Communications Pty Ltd
9583 241 43 9 Satyam Infoway Ltd.,
4766 238 2461 173 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 1453 8670 1009 UUNET Technologies, Inc.
7018 1390 7110 971 AT&T
3908 941 1561 510 Supernet, Inc.
1239 921 3003 663 Sprint
18566 707 176 8 Covad Communications
4323 678 575 197 Time Warner Communications, I
6197 651 442 247 BellSouth Network Solutions,
3356 592 10829 495 Level 3 Communications, LLC
6198 584 329 193 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
852 517 1123 411 Telus Advanced Communications
209 510 2146 292 Qwest
7066 506 206 267 Virginia Polytechnic Institut
20115 473 206 288 Charter Communications
690 411 59 276 Merit Network
705 398 184 243 UUNET Technologies, Inc.
4355 393 332 108 EarthLink, Inc.
2386 383 508 200 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
702 711 2100 590 UUNET - Commercial IP service
3301 298 1169 286 TeliaNet Sweden
3320 277 2005 237 Deutsche Telekom AG
8220 256 419 245 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 193 721 100 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 114 1293 105 BTnet UK Regional network
25186 112 160 76 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 104 3 30 Red Universitaria Nacional
6147 86 70 19 Telefonica Del Peru
11992 86 24 30 Integrated Systems
8065 82 8 16 Empresas Publicas de Medellin
15311 77 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
10292 58 5 26 TELECOMMUNICATIONS OF JAMAICA
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 707 699 Covad Communications
4323 678 481 Time Warner Communications, I
3908 941 431 Supernet, Inc.
7018 1390 419 AT&T
6197 651 404 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 584 391 BellSouth Network Solutions,
4755 397 326 Videsh Sanchar Nigam Ltd. Aut
5668 307 292 Century Telephone
27364 314 291 Armstrong Cable Services
22909 301 286 Comcast Cable Corporation
4355 393 285 EarthLink, Inc.
1221 968 283 Telstra Pty Ltd
6347 345 265 SAVVIS Communications Corpora
1239 921 258 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 /15:470 /16:7427 /17:1781 /18:3198
/19:8499 /20:8927 /21:6577 /22:9418 /23:10856 /24:70439
/25:165 /26:208 /27:156 /28:43 /29:24 /30:58
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 701 707 Covad Communications
3908 599 941 Supernet, Inc.
6197 511 651 BellSouth Network Solutions,
7018 494 1390 AT&T
6198 462 584 BellSouth Network Solutions,
701 442 1453 UUNET Technologies, Inc.
702 429 711 UUNET - Commercial IP service
7066 400 506 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 328 921 Sprint
20115 316 473 Charter Communications
27364 308 314 Armstrong Cable Services
3356 283 592 Level 3 Communications, LLC
5668 273 307 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 219 277 Deutsche Telekom AG
4355 215 393 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 204 510 Qwest
14824 201 228 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:714 13:1 15:6 16:1 17:3
20:6 24:820 25:1 32:83 38:50 40:23
43:1 44:2 55:1 57:14 61:329 62:440
63:1873 64:1812 65:1987 66:2159 67:262 68:392
69:280 80:416 81:174 82:18 128:149 129:154
130:63 131:82 132:18 134:166 135:10 136:180
137:120 138:131 139:50 140:165 141:137 142:101
143:48 144:87 145:33 146:278 147:68 148:302
149:79 150:121 151:66 152:212 153:58 154:7
155:129 156:58 157:53 158:140 159:143 160:45
161:69 162:363 163:68 164:317 165:153 166:100
167:305 168:176 169:96 170:315 171:9 192:5435
193:2441 194:1994 195:1259 196:479 198:3576 199:2843
200:3028 202:4069 203:5311 204:2990 205:2043 206:2289
207:2521 208:2579 209:2784 210:925 211:382 212:937
213:948 214:15 215:22 216:3243 217:754 218:110
219:41 220:114 221:12 222:1
End of report
