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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 28 Sep, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127875
Prefixes after maximum aggregation: 79968
Unique aggregates announced to Internet: 61671
Total ASes present in the Internet Routing Table: 15887
Origin-only ASes present in the Internet Routing Table: 13788
Origin ASes announcing only one prefix: 6256
Transit ASes present in the Internet Routing Table: 2099
Transit-only ASes present in the Internet Routing Table: 70
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: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1227336996
Equivalent to 73 /8s, 39 /16s and 173 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56429
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22713
Total APNIC prefixes after maximum aggregation: 12779
Prefixes being announced from the APNIC address blocks: 21122
Unique aggregates announced from the APNIC address blocks: 12375
APNIC Region origin ASes present in the Internet Routing Table: 1900
APNIC Region origin ASes announcing only one prefix: 548
APNIC Region transit ASes present in the Internet Routing Table: 305
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 122863104
Equivalent to 7 /8s, 82 /16s and 190 /24s
Percentage of available APNIC address space announced: 66.2
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: 77107
Total ARIN prefixes after maximum aggregation: 48330
Prefixes being announced from the ARIN address blocks: 54892
Unique aggregates announced from the ARIN address blocks: 17251
ARIN Region origin ASes present in the Internet Routing Table: 8700
ARIN Region origin ASes announcing only one prefix: 2997
ARIN Region transit ASes present in the Internet Routing Table: 840
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 197269024
Equivalent to 11 /8s, 194 /16s and 22 /24s
Percentage of available ARIN address space announced: 73.5
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: 22623
Total RIPE prefixes after maximum aggregation: 16579
Prefixes being announced from the RIPE address blocks: 19137
Unique aggregates announced from the RIPE address blocks: 12928
RIPE Region origin ASes present in the Internet Routing Table: 4869
RIPE Region origin ASes announcing only one prefix: 2609
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 136613184
Equivalent to 8 /8s, 36 /16s and 141 /24s
Percentage of available RIPE address space announced: 74.0
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
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: 5427
Total LACNIC prefixes after maximum aggregation: 2280
Prefixes being announced from the LACNIC address blocks: 4898
Unique aggregates announced from the LACNIC address blocks: 3188
LACNIC Region origin ASes present in the Internet Routing Table: 348
LACNIC Region origin ASes announcing only one prefix: 102
LACNIC Region transit ASes present in the Internet Routing Table: 73
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13298688
Equivalent to 0 /8s, 202 /16s and 236 /24s
Percentage of available LACNIC address space announced: 39.6
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 976 1110 692 Telstra Pty Ltd
4134 388 2230 109 Data Communications Bureau
4755 384 135 73 Videsh Sanchar Nigam Ltd. Aut
2907 373 1879 347 SINET Japan
703 333 372 265 UUNET
2764 297 322 260 connect.com.au pty ltd
17557 291 21 140 Pakistan Telecom
7474 269 306 209 Optus Communications Pty Ltd
17676 265 3980 26 XTAGE CORPORATION
9583 261 38 27 Satyam Infoway Ltd.,
4766 238 2461 173 Korea Internet Exchange for "
3786 235 773 203 DACOM Corporation
9800 203 332 52 CHINA UNICOM
9929 188 160 36 China Netcom Corp.
9942 188 69 110 COMindico Australia
9443 183 58 83 Primus Telecommunications
9498 181 20 15 BHARTI BT INTERNET LTD.
4538 177 1634 23 China Education and Research
17642 157 40 118 RequestDSL BGP AS# for Sydney
4837 141 1122 89 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1457 8718 1014 UUNET Technologies, Inc.
7018 1397 7139 973 AT&T
6197 968 443 246 BellSouth Network Solutions,
3908 916 1573 492 Supernet, Inc.
1239 905 3030 651 Sprint
18566 693 176 8 Covad Communications
4323 671 575 195 Time Warner Communications, I
3356 575 10761 481 Level 3 Communications, LLC
7843 529 466 134 Adelphia Corp.
852 513 1123 407 Telus Advanced Communications
209 502 2127 289 Qwest
6198 497 330 193 BellSouth Network Solutions,
7066 492 205 263 Virginia Polytechnic Institut
20115 475 205 296 Charter Communications
705 411 185 252 UUNET Technologies, Inc.
690 410 59 275 Merit Network
4355 396 334 109 EarthLink, Inc.
2386 375 507 194 AT&T Data Communications Serv
376 359 359 114 Reseau Interordinateurs Scien
6347 356 397 81 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 710 2121 589 UUNET - Commercial IP service
3301 296 1169 283 TeliaNet Sweden
3320 272 1989 232 Deutsche Telekom AG
8220 256 434 245 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
1257 228 358 183 SWIPnet Swedish IP Network
719 193 307 123 LANLINK autonomous system
3215 186 721 105 France Telecom Transpac
5515 186 779 148 Sonera Solution Autonomous Sy
5400 183 173 133 BT Ignite European Backbone
786 175 1841 175 The JANET IP Service
8708 156 110 153 Romania Data Systems S.A.
3303 148 540 141 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 126 376 124 Song Networks
3269 119 853 65 TELECOM ITALIA
2856 113 1293 104 BTnet UK Regional network
25186 104 128 72 France Telecom Transpac's Tra
3352 98 824 34 Ibernet, Internet Access Netw
2647 95 4225 48 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 340 104 101 ImpSat
8151 234 367 122 UniNet S.A. de C.V.
7303 216 40 58 Telecom Argentina Stet-France
11172 187 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
10620 130 8 26 TVCABLE BOGOTA
6503 128 189 92 AVANTEL, S.A.
11340 103 3 36 Red Universitaria Nacional
11992 89 8 36 Integrated Systems
6147 84 70 19 Telefonica Del Peru
8065 82 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 73 21 28 Instituto Costarricense de El
7927 67 6 40 Global One Venezuela
4270 66 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
1916 61 270 41 Fundacao de Amparo a Pesquisa
7984 59 12 40 Global One Colombia
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6197 968 722 BellSouth Network Solutions,
18566 693 685 Covad Communications
4323 671 476 Time Warner Communications, I
7018 1397 424 AT&T
3908 916 424 Supernet, Inc.
7843 529 395 Adelphia Corp.
4755 384 311 Videsh Sanchar Nigam Ltd. Aut
6198 497 304 BellSouth Network Solutions,
27364 314 291 Armstrong Cable Services
4355 396 287 EarthLink, Inc.
1221 976 284 Telstra Pty Ltd
5668 300 284 Century Telephone
4134 388 279 Data Communications Bureau
22909 295 278 Comcast Cable Corporation
6347 356 275 SAVVIS Communications Corpora
1239 905 254 Sprint
22773 285 250 Cox Communications, Inc. Atla
376 359 245 Reseau Interordinateurs Scien
25844 243 241 Skadden, Arps, Slate, Meagher
6140 340 239 ImpSat
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
65093 PRIVATE 148.170.28.0/22 7991 Savvis Communication
65093 PRIVATE 148.170.32.0/22 7991 Savvis Communication
65093 PRIVATE 148.170.92.0/22 7991 Savvis Communication
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 /8:18 /9:4 /10:6 /11:12 /12:55
/13:97 /14:266 /15:470 /16:7441 /17:1760 /18:3145
/19:8540 /20:8851 /21:6485 /22:9313 /23:10660 /24:70127
/25:148 /26:205 /27:168 /28:20 /29:9 /30:53
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6197 829 968 BellSouth Network Solutions,
18566 687 693 Covad Communications
3908 577 916 Supernet, Inc.
7018 503 1397 AT&T
701 435 1457 UUNET Technologies, Inc.
702 426 710 UUNET - Commercial IP service
7066 387 492 Virginia Polytechnic Institut
6198 383 497 BellSouth Network Solutions,
690 370 410 Merit Network
20115 318 475 Charter Communications
1239 315 905 Sprint
27364 308 314 Armstrong Cable Services
3356 277 575 Level 3 Communications, LLC
5668 266 300 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
4355 214 396 EarthLink, Inc.
7843 213 529 Adelphia Corp.
3320 211 272 Deutsche Telekom AG
209 199 502 Qwest
14824 199 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:704 13:1 15:4 16:1 17:3
20:6 24:826 25:1 32:84 38:47 40:23
43:1 44:2 55:1 57:14 61:324 62:417
63:1872 64:1764 65:2057 66:2205 67:333 68:422
69:264 80:422 81:133 82:17 128:142 129:167
130:61 131:84 132:18 133:1 134:169 135:9
136:185 137:117 138:128 139:49 140:163 141:138
142:100 143:44 144:88 145:14 146:275 147:63
148:299 149:78 150:121 151:66 152:212 153:58
154:7 155:128 156:58 157:54 158:134 159:139
160:45 161:68 162:362 163:70 164:316 165:147
166:102 167:305 168:176 169:97 170:325 171:9
192:5325 193:2451 194:1984 195:1159 196:473 198:3600
199:2837 200:3009 202:3985 203:5295 204:2997 205:2035
206:2328 207:2503 208:2567 209:2717 210:922 211:372
212:969 213:929 214:16 215:22 216:3278 217:731
218:115 219:39 220:116 221:11 222:1
End of report
