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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 17 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 126293
Prefixes after maximum aggregation: 79527
Unique aggregates announced to Internet: 60846
Total ASes present in the Internet Routing Table: 15623
Origin-only ASes present in the Internet Routing Table: 13536
Origin ASes announcing only one prefix: 6165
Transit ASes present in the Internet Routing Table: 2087
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: 1237882112
Equivalent to 73 /8s, 200 /16s and 149 /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: 56060
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22071
Total APNIC prefixes after maximum aggregation: 12671
Prefixes being announced from the APNIC address blocks: 20500
Unique aggregates announced from the APNIC address blocks: 12350
APNIC Region origin ASes present in the Internet Routing Table: 1874
APNIC Region origin ASes announcing only one prefix: 529
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: 16
Number of APNIC addresses announced to Internet: 120475264
Equivalent to 7 /8s, 46 /16s and 78 /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: 76703
Total ARIN prefixes after maximum aggregation: 48289
Prefixes being announced from the ARIN address blocks: 55011
Unique aggregates announced from the ARIN address blocks: 17005
ARIN Region origin ASes present in the Internet Routing Table: 8549
ARIN Region origin ASes announcing only one prefix: 2931
ARIN Region transit ASes present in the Internet Routing Table: 829
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195725824
Equivalent to 11 /8s, 170 /16s and 138 /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: 22214
Total RIPE prefixes after maximum aggregation: 16306
Prefixes being announced from the RIPE address blocks: 18845
Unique aggregates announced from the RIPE address blocks: 12684
RIPE Region origin ASes present in the Internet Routing Table: 4784
RIPE Region origin ASes announcing only one prefix: 2608
RIPE Region transit ASes present in the Internet Routing Table: 843
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134764608
Equivalent to 8 /8s, 8 /16s and 88 /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: 5304
Total LACNIC prefixes after maximum aggregation: 2261
Prefixes being announced from the LACNIC address blocks: 4799
Unique aggregates announced from the LACNIC address blocks: 3143
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 97
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: 13007360
Equivalent to 0 /8s, 198 /16s and 122 /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
2907 376 1912 351 SINET Japan
703 339 372 271 UUNET
4134 336 2210 115 Data Communications Bureau
2764 303 324 273 connect.com.au pty ltd
17557 303 26 136 Pakistan Telecom
4755 276 133 62 Videsh Sanchar Nigam Ltd. Aut
7474 262 306 202 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 241 37 21 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 238 2461 170 Korea Internet Exchange for "
9800 198 326 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 168 13 21 BHARTI BT INTERNET LTD.
17642 155 40 119 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1464 8776 1024 UUNET Technologies, Inc.
7018 1392 7184 979 AT&T
3908 920 1541 495 Supernet, Inc.
1239 889 3016 632 Sprint
189 669 371 324 Genuity
18566 662 160 8 Covad Communications
4323 623 551 179 Time Warner Communications, I
7843 568 409 205 Adelphia Corp.
6197 567 387 244 BellSouth Network Solutions,
852 522 1124 414 Telus Advanced Communications
209 519 2177 300 Qwest
6198 510 276 195 BellSouth Network Solutions,
1 483 1079 310 GENUITY
705 481 192 304 UUNET Technologies, Inc.
20115 477 197 287 Charter Communications
3356 468 10755 393 Level 3 Communications, LLC
7132 410 6608 240 Southwestern Bell Internet Se
4355 408 339 109 EarthLink, Inc.
690 405 58 272 Merit Network
2386 379 523 198 AT&T Data Communications Serv
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 247 432 235 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 167 161 119 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 121 360 119 Song Networks
3269 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 812 33 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 312 98 113 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 219 318 115 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 132 205 93 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
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
15311 74 14 38 Telefonica Empresas
11830 73 6 28 Instituto Costarricense de El
1916 72 302 44 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
7984 59 12 40 Global One Colombia
13999 57 36 8 Mega Cable S.A. de C.V.
7738 55 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 662 654 Covad Communications
4323 623 444 Time Warner Communications, I
3908 920 425 Supernet, Inc.
7018 1392 413 AT&T
7843 568 363 Adelphia Corp.
189 669 345 Genuity
6197 567 323 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 510 315 BellSouth Network Solutions,
1221 1041 309 Telstra Pty Ltd
4355 408 299 EarthLink, Inc.
27364 317 298 Armstrong Cable Services
6347 357 277 SAVVIS Communications Corpora
22909 286 272 Comcast Cable Corporation
1239 889 257 Sprint
25844 256 254 Skadden, Arps, Slate, Meagher
17676 253 231 XTAGE CORPORATION
22773 241 223 Cox Communications, Inc. Atla
4134 336 221 Data Communications Bureau
9583 241 220 Satyam Infoway Ltd.,
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 /15:473 /16:7388 /17:1737 /18:3076
/19:8392 /20:8652 /21:6321 /22:9327 /23:10797 /24:69132
/25:154 /26:168 /27:109 /28:25 /29:12 /30:47
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 656 662 Covad Communications
189 591 669 Genuity
3908 582 920 Supernet, Inc.
7018 498 1392 AT&T
702 447 734 UUNET - Commercial IP service
701 435 1464 UUNET Technologies, Inc.
6197 432 567 BellSouth Network Solutions,
6198 401 510 BellSouth Network Solutions,
690 365 405 Merit Network
20115 326 477 Charter Communications
27364 311 317 Armstrong Cable Services
1239 300 889 Sprint
7843 293 568 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 256 256 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 220 408 EarthLink, Inc.
7066 219 323 Virginia Polytechnic Institut
209 208 519 Qwest
1 203 483 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 13:1 15:4 16:1 17:3
20:6 24:867 25:1 32:97 38:43 40:23
44:2 55:1 57:14 61:296 62:396 63:1847
64:1746 65:2001 66:2628 67:230 68:384 69:248
80:396 81:123 82:10 128:161 129:170 130:49
131:78 132:13 134:145 135:7 136:110 137:112
138:119 139:46 140:140 141:115 142:84 143:44
144:88 145:13 146:279 147:61 148:294 149:72
150:120 151:62 152:217 153:57 154:3 155:121
156:58 157:46 158:117 159:135 160:45 161:74
162:404 163:78 164:161 165:140 166:95 167:313
168:178 169:95 170:325 171:8 192:5222 193:2461
194:1978 195:1154 196:468 198:3496 199:2703 200:3007
202:3918 203:5122 204:2931 205:2029 206:2312 207:2489
208:2552 209:2823 210:891 211:302 212:993 213:913
214:16 215:22 216:3226 217:686 218:101 219:75
220:98 221:10
End of report
