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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 19 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128882
Prefixes after maximum aggregation: 80538
Unique aggregates announced to Internet: 62225
Total ASes present in the Internet Routing Table: 15996
Origin-only ASes present in the Internet Routing Table: 13886
Origin ASes announcing only one prefix: 6313
Transit ASes present in the Internet Routing Table: 2110
Transit-only ASes present in the Internet Routing Table: 73
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: 1247284268
Equivalent to 74 /8s, 88 /16s and 12 /24s
Percentage of available address space announced: 33.7
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56997
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 23030
Total APNIC prefixes after maximum aggregation: 12884
Prefixes being announced from the APNIC address blocks: 21472
Unique aggregates announced from the APNIC address blocks: 12460
APNIC Region origin ASes present in the Internet Routing Table: 1913
APNIC Region origin ASes announcing only one prefix: 548
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 123763712
Equivalent to 7 /8s, 96 /16s and 124 /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: 77197
Total ARIN prefixes after maximum aggregation: 48642
Prefixes being announced from the ARIN address blocks: 54854
Unique aggregates announced from the ARIN address blocks: 17442
ARIN Region origin ASes present in the Internet Routing Table: 8726
ARIN Region origin ASes announcing only one prefix: 3012
ARIN Region transit ASes present in the Internet Routing Table: 843
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198377760
Equivalent to 11 /8s, 211 /16s and 1 /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: 23107
Total RIPE prefixes after maximum aggregation: 16760
Prefixes being announced from the RIPE address blocks: 19538
Unique aggregates announced from the RIPE address blocks: 13046
RIPE Region origin ASes present in the Internet Routing Table: 4934
RIPE Region origin ASes announcing only one prefix: 2650
RIPE Region transit ASes present in the Internet Routing Table: 862
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 137768000
Equivalent to 8 /8s, 54 /16s and 44 /24s
Percentage of available RIPE address space announced: 74.7
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: 5545
Total LACNIC prefixes after maximum aggregation: 2252
Prefixes being announced from the LACNIC address blocks: 5032
Unique aggregates announced from the LACNIC address blocks: 3210
LACNIC Region origin ASes present in the Internet Routing Table: 350
LACNIC Region origin ASes announcing only one prefix: 103
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: 13384448
Equivalent to 0 /8s, 204 /16s and 59 /24s
Percentage of available LACNIC address space announced: 39.9
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 393 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 366 1879 343 SINET Japan
4134 356 2229 108 Data Communications Bureau
703 332 356 266 UUNET
2764 296 289 258 connect.com.au pty ltd
17557 286 20 143 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
7474 266 306 212 Optus Communications Pty Ltd
9583 257 44 11 Satyam Infoway Ltd.,
4766 242 2462 177 Korea Internet Exchange for "
3786 233 773 203 DACOM Corporation
4538 215 1714 21 China Education and Research
9800 202 331 51 CHINA UNICOM
9942 199 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
4621 161 13 58 UNINET-TH
17642 153 40 115 RequestDSL BGP AS# for Sydney
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1449 8665 1004 UUNET Technologies, Inc.
7018 1358 7096 940 AT&T
3908 948 1562 513 Supernet, Inc.
1239 922 3035 659 Sprint
18566 710 176 8 Covad Communications
4323 683 577 198 Time Warner Communications, I
6197 641 454 240 BellSouth Network Solutions,
3356 595 10813 498 Level 3 Communications, LLC
6198 573 336 196 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
209 523 2149 296 Qwest
852 517 1123 411 Telus Advanced Communications
7066 510 207 271 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 411 59 276 Merit Network
705 399 184 243 UUNET Technologies, Inc.
4355 395 331 106 EarthLink, Inc.
2386 381 508 199 AT&T Data Communications Serv
376 359 359 115 Reseau Interordinateurs Scien
6347 347 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 713 2100 593 UUNET - Commercial IP service
3301 300 1169 285 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 250 438 191 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 186 171 134 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
786 176 1857 176 The JANET IP Service
3215 174 704 90 France Telecom Transpac
8708 160 111 154 Romania Data Systems S.A.
3303 149 556 142 Swisscom Ltd
25186 131 162 91 France Telecom Transpac's Tra
12302 127 18 34 MobiFon S.A.
3246 126 374 124 Song Networks
3269 121 885 66 TELECOM ITALIA
2856 116 1293 107 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 337 104 99 ImpSat
8151 236 367 124 UniNet S.A. de C.V.
7303 219 41 49 Telecom Argentina Stet-France
11172 191 77 42 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
6505 140 91 98 Global One Communicaoes Ltda
6503 128 189 92 AVANTEL, S.A.
10620 123 8 26 TVCABLE BOGOTA
6147 106 70 19 Telefonica Del Peru
11340 103 3 29 Red Universitaria Nacional
11992 87 25 31 Integrated Systems
8065 84 10 18 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 66 18 9 Red de Interconexion Universi
11311 66 7 23 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 710 702 Covad Communications
4323 683 485 Time Warner Communications, I
3908 948 435 Supernet, Inc.
7018 1358 418 AT&T
6197 641 401 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 573 377 BellSouth Network Solutions,
4755 393 322 Videsh Sanchar Nigam Ltd. Aut
27364 315 292 Armstrong Cable Services
5668 306 291 Century Telephone
22909 302 290 Comcast Cable Corporation
4355 395 289 EarthLink, Inc.
1221 966 283 Telstra Pty Ltd
22773 293 279 Cox Communications, Inc. Atla
6347 347 267 SAVVIS Communications Corpora
1239 922 263 Sprint
4134 356 248 Data Communications Bureau
9583 257 246 Satyam Infoway Ltd.,
376 359 244 Reseau Interordinateurs Scien
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
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
65503 PRIVATE 202.133.192.0/20 4775 Telecom Carrier /
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 /15:471 /16:7434 /17:1785 /18:3206
/19:8516 /20:8954 /21:6558 /22:9403 /23:10818 /24:70560
/25:160 /26:204 /27:167 /28:41 /29:27 /30:65
/31:0 /32:51
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 704 710 Covad Communications
3908 605 948 Supernet, Inc.
6197 499 641 BellSouth Network Solutions,
7018 483 1358 AT&T
6198 444 573 BellSouth Network Solutions,
701 443 1449 UUNET Technologies, Inc.
702 431 713 UUNET - Commercial IP service
7066 402 510 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 325 922 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 287 595 Level 3 Communications, LLC
5668 272 306 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 220 278 Deutsche Telekom AG
4355 219 395 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 207 523 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:711 13:1 15:6 16:1 17:2
20:7 24:819 25:1 32:83 38:52 40:23
43:1 44:2 55:1 57:14 61:336 62:439
63:1878 64:1806 65:1979 66:2174 67:274 68:399
69:274 80:426 81:158 82:34 128:153 129:156
130:63 131:83 132:19 134:166 135:10 136:180
137:120 138:133 139:49 140:164 141:138 142:101
143:49 144:88 145:33 146:279 147:67 148:303
149:78 150:121 151:60 152:211 153:59 154:7
155:128 156:58 157:52 158:140 159:143 160:46
161:70 162:362 163:68 164:307 165:158 166:100
167:307 168:177 169:97 170:311 171:9 192:5402
193:2444 194:1996 195:1275 196:483 198:3544 199:2832
200:3064 201:1 202:4115 203:5330 204:2997 205:2046
206:2249 207:2560 208:2525 209:2783 210:934 211:391
212:935 213:959 214:15 215:22 216:3283 217:767
218:113 219:41 220:114 221:13 222:1
End of report
