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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 15 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127239
Prefixes after maximum aggregation: 79889
Unique aggregates announced to Internet: 60930
Total ASes present in the Internet Routing Table: 15696
Origin-only ASes present in the Internet Routing Table: 13594
Origin ASes announcing only one prefix: 6204
Transit ASes present in the Internet Routing Table: 2102
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 26
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1239046016
Equivalent to 73 /8s, 218 /16s and 87 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56551
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22202
Total APNIC prefixes after maximum aggregation: 12695
Prefixes being announced from the APNIC address blocks: 20622
Unique aggregates announced from the APNIC address blocks: 12330
APNIC Region origin ASes present in the Internet Routing Table: 1879
APNIC Region origin ASes announcing only one prefix: 533
APNIC Region transit ASes present in the Internet Routing Table: 316
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120418944
Equivalent to 7 /8s, 45 /16s and 114 /24s
Percentage of available APNIC address space announced: 64.9
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: 77429
Total ARIN prefixes after maximum aggregation: 48584
Prefixes being announced from the ARIN address blocks: 55106
Unique aggregates announced from the ARIN address blocks: 17114
ARIN Region origin ASes present in the Internet Routing Table: 8613
ARIN Region origin ASes announcing only one prefix: 2961
ARIN Region transit ASes present in the Internet Routing Table: 834
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195660032
Equivalent to 11 /8s, 169 /16s and 137 /24s
Percentage of available ARIN address space announced: 72.9
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: 22238
Total RIPE prefixes after maximum aggregation: 16333
Prefixes being announced from the RIPE address blocks: 18862
Unique aggregates announced from the RIPE address blocks: 12688
RIPE Region origin ASes present in the Internet Routing Table: 4788
RIPE Region origin ASes announcing only one prefix: 2614
RIPE Region transit ASes present in the Internet Routing Table: 853
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134658880
Equivalent to 8 /8s, 6 /16s and 187 /24s
Percentage of available RIPE address space announced: 73.0
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: 5369
Total LACNIC prefixes after maximum aggregation: 2277
Prefixes being announced from the LACNIC address blocks: 4843
Unique aggregates announced from the LACNIC address blocks: 3144
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 96
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13016064
Equivalent to 0 /8s, 198 /16s and 156 /24s
Percentage of available LACNIC address space announced: 38.8
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 1041 1038 732 Telstra Pty Ltd
4755 403 136 72 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 337 372 270 UUNET
4134 337 2210 115 Data Communications Bureau
2764 301 323 271 connect.com.au pty ltd
17557 300 25 137 Pakistan Telecom
7474 262 306 202 Optus Communications Pty Ltd
17676 252 3878 21 XTAGE CORPORATION
9583 241 37 20 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 238 2461 170 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 169 1538 21 China Education and Research
9929 169 153 33 China Netcom Corp.
9498 165 12 20 BHARTI BT INTERNET LTD.
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 131 729 125 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1482 8778 1045 UUNET Technologies, Inc.
7018 1383 7190 966 AT&T
3908 915 1540 489 Supernet, Inc.
1239 914 3028 652 Sprint
189 674 371 321 Genuity
18566 660 160 8 Covad Communications
4323 619 551 177 Time Warner Communications, I
6197 567 387 244 BellSouth Network Solutions,
7843 564 405 206 Adelphia Corp.
209 523 2193 302 Qwest
852 523 1124 415 Telus Advanced Communications
6198 507 271 194 BellSouth Network Solutions,
7066 489 205 260 Virginia Polytechnic Institut
1 483 1095 310 GENUITY
705 481 192 304 UUNET Technologies, Inc.
20115 475 196 286 Charter Communications
3356 463 10755 388 Level 3 Communications, LLC
7132 410 6608 240 Southwestern Bell Internet Se
690 409 59 276 Merit Network
4355 406 339 112 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 734 2139 610 UUNET - Commercial IP service
3301 291 1186 279 TeliaNet Sweden
3320 261 1987 223 Deutsche Telekom AG
8220 246 432 234 COLT Internet - International
1257 239 311 189 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 214 752 121 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 166 159 118 BT Ignite European Backbone
8708 155 110 152 Romania Data Systems S.A.
3303 139 540 136 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 122 376 120 Song Networks
3269 116 819 63 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 812 33 Ibernet, Internet Access Netw
2647 100 4129 44 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 301 98 116 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 216 334 114 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 152 10 18 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 36 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
11830 75 5 31 Instituto Costarricense de El
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 61 36 8 Mega Cable S.A. de C.V.
7984 59 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 660 652 Covad Communications
4323 619 442 Time Warner Communications, I
3908 915 426 Supernet, Inc.
7018 1383 417 AT&T
7843 564 358 Adelphia Corp.
189 674 353 Genuity
4755 403 331 Videsh Sanchar Nigam Ltd. Aut
6197 567 323 BellSouth Network Solutions,
11305 359 321 Interland Incorporated
6198 507 313 BellSouth Network Solutions,
1221 1041 309 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 406 294 EarthLink, Inc.
6347 359 279 SAVVIS Communications Corpora
22909 285 272 Comcast Cable Corporation
1239 914 262 Sprint
25844 258 256 Skadden, Arps, Slate, Meagher
376 358 243 Reseau Interordinateurs Scien
17676 252 231 XTAGE CORPORATION
7066 489 229 Virginia Polytechnic Institut
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
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
192.228.80.0/24 30122 INTERNET SOFTWARE CONSORTIUM,
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:4 /10:6 /11:12 /12:55
/13:98 /14:263 /15:472 /16:7417 /17:1736 /18:3081
/19:8386 /20:8658 /21:6349 /22:9369 /23:10827 /24:69869
/25:159 /26:212 /27:131 /28:27 /29:12 /30:50
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 654 660 Covad Communications
189 596 674 Genuity
3908 583 915 Supernet, Inc.
7018 488 1383 AT&T
702 447 734 UUNET - Commercial IP service
701 432 1482 UUNET Technologies, Inc.
6197 432 567 BellSouth Network Solutions,
6198 398 507 BellSouth Network Solutions,
7066 386 489 Virginia Polytechnic Institut
690 369 409 Merit Network
20115 324 475 Charter Communications
1239 315 914 Sprint
27364 311 317 Armstrong Cable Services
7843 292 564 Adelphia Corp.
11305 282 359 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 220 406 EarthLink, Inc.
209 210 523 Qwest
1 203 483 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:715 13:1 15:4 16:1 17:3
20:6 24:862 25:1 32:98 38:44 40:23
44:2 55:1 57:14 61:293 62:395 63:1855
64:1753 65:2016 66:2635 67:224 68:383 69:245
80:397 81:124 82:10 128:160 129:171 130:50
131:80 132:13 134:174 135:7 136:122 137:118
138:121 139:46 140:141 141:117 142:94 143:44
144:95 145:13 146:278 147:59 148:302 149:73
150:120 151:63 152:219 153:57 154:3 155:122
156:57 157:48 158:118 159:136 160:46 161:73
162:407 163:80 164:328 165:139 166:96 167:314
168:182 169:95 170:324 171:8 192:5402 193:2468
194:1982 195:1155 196:469 198:3601 199:2739 200:2997
202:3944 203:5192 204:2961 205:2042 206:2320 207:2414
208:2561 209:2853 210:890 211:300 212:1011 213:910
214:16 215:22 216:3242 217:676 218:102 219:74
220:96 221:10
End of report
