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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 07 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 129058
Prefixes after maximum aggregation: 80350
Unique aggregates announced to Internet: 62076
Total ASes present in the Internet Routing Table: 15927
Origin-only ASes present in the Internet Routing Table: 13820
Origin ASes announcing only one prefix: 6272
Transit ASes present in the Internet Routing Table: 2107
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 26
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: 14
Number of addresses announced to Internet: 1245847844
Equivalent to 74 /8s, 66 /16s and 33 /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: 57442
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22790
Total APNIC prefixes after maximum aggregation: 12835
Prefixes being announced from the APNIC address blocks: 21184
Unique aggregates announced from the APNIC address blocks: 12362
APNIC Region origin ASes present in the Internet Routing Table: 1904
APNIC Region origin ASes announcing only one prefix: 547
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 123415040
Equivalent to 7 /8s, 91 /16s and 42 /24s
Percentage of available APNIC address space announced: 66.5
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: 78079
Total ARIN prefixes after maximum aggregation: 48609
Prefixes being announced from the ARIN address blocks: 55721
Unique aggregates announced from the ARIN address blocks: 17391
ARIN Region origin ASes present in the Internet Routing Table: 8717
ARIN Region origin ASes announcing only one prefix: 3002
ARIN Region transit ASes present in the Internet Routing Table: 847
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 197754400
Equivalent to 11 /8s, 201 /16s and 126 /24s
Percentage of available ARIN address space announced: 73.7
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
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: 22715
Total RIPE prefixes after maximum aggregation: 16627
Prefixes being announced from the RIPE address blocks: 19232
Unique aggregates announced from the RIPE address blocks: 12953
RIPE Region origin ASes present in the Internet Routing Table: 4885
RIPE Region origin ASes announcing only one prefix: 2620
RIPE Region transit ASes present in the Internet Routing Table: 858
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 137068352
Equivalent to 8 /8s, 43 /16s and 127 /24s
Percentage of available RIPE address space announced: 74.3
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: 5472
Total LACNIC prefixes after maximum aggregation: 2279
Prefixes being announced from the LACNIC address blocks: 4964
Unique aggregates announced from the LACNIC address blocks: 3313
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: 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: 13328640
Equivalent to 0 /8s, 203 /16s and 97 /24s
Percentage of available LACNIC address space announced: 39.7
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 969 1109 686 Telstra Pty Ltd
4755 387 133 74 Videsh Sanchar Nigam Ltd. Aut
2907 368 1879 345 SINET Japan
4134 364 2223 105 Data Communications Bureau
703 336 372 267 UUNET
2764 296 290 259 connect.com.au pty ltd
17557 279 24 136 Pakistan Telecom
17676 272 4012 33 XTAGE CORPORATION
7474 260 305 206 Optus Communications Pty Ltd
4766 238 2461 173 Korea Internet Exchange for "
3786 235 773 203 DACOM Corporation
9583 234 43 9 Satyam Infoway Ltd.,
4538 209 1714 21 China Education and Research
9800 203 332 52 CHINA UNICOM
9942 191 69 112 COMindico Australia
9929 190 160 36 China Netcom Corp.
9498 184 20 17 BHARTI BT INTERNET LTD.
9443 183 58 83 Primus Telecommunications
17642 154 40 116 RequestDSL BGP AS# for Sydney
4739 142 58 131 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1459 8702 1014 UUNET Technologies, Inc.
7018 1402 7143 977 AT&T
6198 1187 330 195 BellSouth Network Solutions,
6197 972 467 231 BellSouth Network Solutions,
3908 941 1577 512 Supernet, Inc.
1239 912 3029 653 Sprint
18566 701 176 8 Covad Communications
4323 674 559 195 Time Warner Communications, I
3356 587 10812 490 Level 3 Communications, LLC
7843 530 473 136 Adelphia Corp.
852 517 1123 410 Telus Advanced Communications
209 505 2128 292 Qwest
7066 499 205 263 Virginia Polytechnic Institut
20115 465 202 283 Charter Communications
690 411 59 276 Merit Network
705 402 184 246 UUNET Technologies, Inc.
4355 395 332 108 EarthLink, Inc.
2386 381 508 198 AT&T Data Communications Serv
376 354 359 115 Reseau Interordinateurs Scien
6347 349 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 709 2101 588 UUNET - Commercial IP service
3301 295 1169 284 TeliaNet Sweden
3320 280 2005 240 Deutsche Telekom AG
8220 257 435 246 COLT Internet - International
1257 235 358 183 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
719 193 307 123 LANLINK autonomous system
5400 187 174 134 BT Ignite European Backbone
3215 186 753 102 France Telecom Transpac
5515 186 779 148 Sonera Solution Autonomous Sy
786 179 1874 179 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 113 1293 104 BTnet UK Regional network
25186 108 128 75 France Telecom Transpac's Tra
2647 100 4225 48 SITA
3352 98 824 34 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 339 104 99 ImpSat
8151 235 367 123 UniNet S.A. de C.V.
7303 218 40 51 Telecom Argentina Stet-France
11172 187 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 129 189 93 AVANTEL, S.A.
10620 122 8 26 TVCABLE BOGOTA
11340 100 2 33 Red Universitaria Nacional
11992 89 24 37 Integrated Systems
6147 86 70 19 Telefonica Del Peru
8065 82 8 17 Empresas Publicas de Medellin
6505 80 84 69 Global One Communicaoes Ltda
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
7927 66 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
1916 61 270 41 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
6198 1187 992 BellSouth Network Solutions,
6197 972 741 BellSouth Network Solutions,
18566 701 693 Covad Communications
4323 674 479 Time Warner Communications, I
3908 941 429 Supernet, Inc.
7018 1402 425 AT&T
7843 530 394 Adelphia Corp.
4755 387 313 Videsh Sanchar Nigam Ltd. Aut
5668 308 293 Century Telephone
27364 314 291 Armstrong Cable Services
4355 395 287 EarthLink, Inc.
1221 969 283 Telstra Pty Ltd
22909 296 279 Comcast Cable Corporation
6347 349 269 SAVVIS Communications Corpora
1239 912 259 Sprint
4134 364 259 Data Communications Bureau
22773 287 251 Cox Communications, Inc. Atla
25844 243 241 Skadden, Arps, Slate, Meagher
6140 339 240 ImpSat
376 354 239 Reseau Interordinateurs Scien
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
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
/13:99 /14:268 /15:470 /16:7433 /17:1774 /18:3178
/19:8484 /20:8891 /21:6535 /22:9359 /23:10744 /24:71092
/25:153 /26:206 /27:169 /28:19 /29:10 /30:53
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6198 1063 1187 BellSouth Network Solutions,
6197 831 972 BellSouth Network Solutions,
18566 695 701 Covad Communications
3908 598 941 Supernet, Inc.
7018 504 1402 AT&T
701 440 1459 UUNET Technologies, Inc.
702 425 709 UUNET - Commercial IP service
7066 394 499 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 316 912 Sprint
20115 311 465 Charter Communications
27364 308 314 Armstrong Cable Services
3356 282 587 Level 3 Communications, LLC
5668 274 308 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 219 280 Deutsche Telekom AG
4355 216 395 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 202 505 Qwest
14824 199 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:710 13:1 15:4 16:1 17:3
20:6 24:822 25:1 32:84 38:49 40:23
43:1 44:2 55:1 57:14 61:317 62:427
63:1881 64:1835 65:2113 66:2281 67:430 68:808
69:271 80:422 81:170 82:18 128:141 129:156
130:64 131:81 132:18 134:166 135:9 136:186
137:118 138:130 139:50 140:164 141:136 142:102
143:46 144:80 145:14 146:277 147:65 148:301
149:77 150:121 151:66 152:212 153:58 154:7
155:130 156:58 157:55 158:139 159:142 160:45
161:69 162:359 163:68 164:321 165:149 166:103
167:304 168:176 169:96 170:339 171:9 192:5414
193:2438 194:1979 195:1169 196:473 198:3610 199:2854
200:3017 202:3981 203:5286 204:2994 205:2057 206:2301
207:2516 208:2642 209:2785 210:917 211:382 212:939
213:932 214:15 215:22 216:3232 217:752 218:109
219:41 220:117 221:13 222:1
End of report
