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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 02 Sep, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127670
Prefixes after maximum aggregation: 79906
Unique aggregates announced to Internet: 61250
Total ASes present in the Internet Routing Table: 15745
Origin-only ASes present in the Internet Routing Table: 13653
Origin ASes announcing only one prefix: 6214
Transit ASes present in the Internet Routing Table: 2092
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: 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: 16
Number of addresses announced to Internet: 1240781856
Equivalent to 73 /8s, 244 /16s and 212 /24s
Percentage of available address space announced: 33.5
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56708
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22289
Total APNIC prefixes after maximum aggregation: 12664
Prefixes being announced from the APNIC address blocks: 20720
Unique aggregates announced from the APNIC address blocks: 12251
APNIC Region origin ASes present in the Internet Routing Table: 1888
APNIC Region origin ASes announcing only one prefix: 542
APNIC Region transit ASes present in the Internet Routing Table: 315
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 121140736
Equivalent to 7 /8s, 56 /16s and 118 /24s
Percentage of available APNIC address space announced: 65.3
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: 77722
Total ARIN prefixes after maximum aggregation: 48582
Prefixes being announced from the ARIN address blocks: 55438
Unique aggregates announced from the ARIN address blocks: 17248
ARIN Region origin ASes present in the Internet Routing Table: 8620
ARIN Region origin ASes announcing only one prefix: 2953
ARIN Region transit ASes present in the Internet Routing Table: 827
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 196385056
Equivalent to 11 /8s, 180 /16s and 153 /24s
Percentage of available ARIN address space announced: 73.2
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: 22288
Total RIPE prefixes after maximum aggregation: 16352
Prefixes being announced from the RIPE address blocks: 18919
Unique aggregates announced from the RIPE address blocks: 12700
RIPE Region origin ASes present in the Internet Routing Table: 4816
RIPE Region origin ASes announcing only one prefix: 2620
RIPE Region transit ASes present in the Internet Routing Table: 849
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 135479360
Equivalent to 8 /8s, 19 /16s and 64 /24s
Percentage of available RIPE address space announced: 73.4
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
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: 5370
Total LACNIC prefixes after maximum aggregation: 2308
Prefixes being announced from the LACNIC address blocks: 4811
Unique aggregates announced from the LACNIC address blocks: 3140
LACNIC Region origin ASes present in the Internet Routing Table: 347
LACNIC Region origin ASes announcing only one prefix: 99
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13052928
Equivalent to 0 /8s, 199 /16s and 44 /24s
Percentage of available LACNIC address space announced: 38.9
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 982 1125 695 Telstra Pty Ltd
4755 407 135 73 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 350 SINET Japan
703 340 372 268 UUNET
4134 333 2220 112 Data Communications Bureau
17557 304 26 135 Pakistan Telecom
2764 296 322 264 connect.com.au pty ltd
7474 266 307 207 Optus Communications Pty Ltd
17676 254 3910 22 XTAGE CORPORATION
9583 242 37 21 Satyam Infoway Ltd.,
4766 238 2461 170 Korea Internet Exchange for "
3786 237 773 203 DACOM Corporation
9800 200 330 56 CHINA UNICOM
9443 185 58 82 Primus Telecommunications
9498 177 16 31 BHARTI BT INTERNET LTD.
4538 170 1538 21 China Education and Research
9929 170 155 34 China Netcom Corp.
9942 155 69 100 COMindico Australia
17642 155 41 116 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1483 8769 1041 UUNET Technologies, Inc.
7018 1386 7136 982 AT&T
3908 925 1573 493 Supernet, Inc.
1239 892 3031 641 Sprint
189 673 451 333 Genuity
18566 672 160 8 Covad Communications
4323 626 551 179 Time Warner Communications, I
6197 571 387 248 BellSouth Network Solutions,
7843 546 419 182 Adelphia Corp.
852 516 1123 410 Telus Advanced Communications
209 513 2129 297 Qwest
6198 497 277 197 BellSouth Network Solutions,
7066 491 205 262 Virginia Polytechnic Institut
20115 480 200 290 Charter Communications
3356 476 10675 395 Level 3 Communications, LLC
1 467 1056 301 GENUITY
705 464 182 290 UUNET Technologies, Inc.
7132 413 6657 240 Southwestern Bell Internet Se
690 410 59 276 Merit Network
4355 392 340 111 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 727 2122 602 UUNET - Commercial IP service
3301 295 1168 281 TeliaNet Sweden
3320 268 1989 228 Deutsche Telekom AG
1257 248 375 190 SWIPnet Swedish IP Network
8220 246 431 235 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 192 307 122 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
5400 181 175 132 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
8708 158 111 154 Romania Data Systems S.A.
3303 143 540 140 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
3246 123 360 121 Song Networks
3269 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 828 31 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 319 103 114 ImpSat
7303 238 39 56 Telecom Argentina Stet-France
8151 222 334 117 UniNet S.A. de C.V.
11172 188 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 108 3 39 Red Universitaria Nacional
11992 89 8 36 Integrated Systems
6147 83 70 20 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 74 6 29 Instituto Costarricense de El
1916 73 306 43 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 56 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 672 664 Covad Communications
4323 626 447 Time Warner Communications, I
3908 925 432 Supernet, Inc.
7018 1386 404 AT&T
7843 546 364 Adelphia Corp.
189 673 340 Genuity
4755 407 334 Videsh Sanchar Nigam Ltd. Aut
6197 571 323 BellSouth Network Solutions,
6198 497 300 BellSouth Network Solutions,
27364 317 294 Armstrong Cable Services
1221 982 287 Telstra Pty Ltd
4355 392 281 EarthLink, Inc.
6347 354 275 SAVVIS Communications Corpora
22909 291 273 Comcast Cable Corporation
1239 892 251 Sprint
226 286 244 Los Nettos
25844 241 239 Skadden, Arps, Slate, Meagher
376 353 238 Reseau Interordinateurs Scien
17676 254 232 XTAGE CORPORATION
22773 248 231 Cox Communications, Inc. Atla
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
189.186.184.0/24 4471 Michigan Internet Cooperative
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 /15:474 /16:7418 /17:1737 /18:3083
/19:8449 /20:8705 /21:6377 /22:9389 /23:10899 /24:70029
/25:169 /26:217 /27:149 /28:26 /29:13 /30:51
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 666 672 Covad Communications
189 588 673 Genuity
3908 585 925 Supernet, Inc.
7018 493 1386 AT&T
701 444 1483 UUNET Technologies, Inc.
702 442 727 UUNET - Commercial IP service
6197 436 571 BellSouth Network Solutions,
6198 387 497 BellSouth Network Solutions,
7066 387 491 Virginia Polytechnic Institut
690 371 410 Merit Network
20115 328 480 Charter Communications
27364 311 317 Armstrong Cable Services
1239 309 892 Sprint
10753 299 313 XCOM Technologies, INC.
7843 262 546 Adelphia Corp.
25844 241 241 Skadden, Arps, Slate, Meagher
4355 210 392 EarthLink, Inc.
3320 207 268 Deutsche Telekom AG
3356 207 476 Level 3 Communications, LLC
1 205 467 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:698 13:1 15:4 16:1 17:4
20:6 24:836 25:1 32:85 38:45 40:23
44:2 55:1 57:14 61:302 62:387 63:1855
64:1776 65:2009 66:2702 67:259 68:393 69:258
80:399 81:120 82:12 128:149 129:171 130:58
131:82 132:13 134:172 135:7 136:174 137:114
138:113 139:47 140:146 141:134 142:98 143:45
144:90 145:13 146:274 147:62 148:302 149:76
150:123 151:68 152:218 153:57 154:4 155:126
156:68 157:49 158:119 159:135 160:45 161:75
162:360 163:77 164:310 165:139 166:96 167:313
168:179 169:95 170:321 171:9 189:1 192:5376
193:2437 194:1969 195:1189 196:465 198:3604 199:2738
200:2968 202:3879 203:5246 204:3012 205:2047 206:2336
207:2541 208:2557 209:2739 210:898 211:301 212:967
213:933 214:16 215:22 216:3273 217:705 218:102
219:76 220:102 221:9
End of report
