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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 24 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125867
Prefixes after maximum aggregation: 79027
Unique aggregates announced to Internet: 59543
Total ASes present in the Internet Routing Table: 15398
Origin-only ASes present in the Internet Routing Table: 13349
Origin ASes announcing only one prefix: 6055
Transit ASes present in the Internet Routing Table: 2049
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: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1251569416
Equivalent to 74 /8s, 153 /16s and 111 /24s
Percentage of available address space announced: 33.8
Percentage of allocated address space announced: 60.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55493
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21475
Total APNIC prefixes after maximum aggregation: 12580
Prefixes being announced from the APNIC address blocks: 19906
Unique aggregates announced from the APNIC address blocks: 12223
APNIC Region origin ASes present in the Internet Routing Table: 1828
APNIC Region origin ASes announcing only one prefix: 527
APNIC Region transit ASes present in the Internet Routing Table: 298
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 115881760
Equivalent to 6 /8s, 232 /16s and 55 /24s
Percentage of available APNIC address space announced: 62.4
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: 77218
Total ARIN prefixes after maximum aggregation: 48152
Prefixes being announced from the ARIN address blocks: 55406
Unique aggregates announced from the ARIN address blocks: 16439
ARIN Region origin ASes present in the Internet Routing Table: 8490
ARIN Region origin ASes announcing only one prefix: 2901
ARIN Region transit ASes present in the Internet Routing Table: 821
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 193274880
Equivalent to 11 /8s, 133 /16s and 36 /24s
Percentage of available ARIN address space announced: 72.0
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: 21779
Total RIPE prefixes after maximum aggregation: 16046
Prefixes being announced from the RIPE address blocks: 18269
Unique aggregates announced from the RIPE address blocks: 12282
RIPE Region origin ASes present in the Internet Routing Table: 4671
RIPE Region origin ASes announcing only one prefix: 2538
RIPE Region transit ASes present in the Internet Routing Table: 829
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 132425536
Equivalent to 7 /8s, 228 /16s and 167 /24s
Percentage of available RIPE address space announced: 71.8
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: 5394
Total LACNIC prefixes after maximum aggregation: 2249
Prefixes being announced from the LACNIC address blocks: 4808
Unique aggregates announced from the LACNIC address blocks: 3004
LACNIC Region origin ASes present in the Internet Routing Table: 338
LACNIC Region origin ASes announcing only one prefix: 89
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12779008
Equivalent to 0 /8s, 194 /16s and 254 /24s
Percentage of available LACNIC address space announced: 38.1
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 1054 1070 750 Telstra Pty Ltd
4755 398 132 60 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 350 SINET Japan
17557 344 24 149 Pakistan Telecom
703 335 371 268 UUNET
2764 305 325 272 connect.com.au pty ltd
7474 270 306 203 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 244 773 211 DACOM Corporation
9583 230 37 19 Satyam Infoway Ltd.,
4134 226 1915 112 Data Communications Bureau
4766 212 2475 159 Korea Internet Exchange for "
9800 186 302 61 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 166 11 28 BHARTI BT INTERNET LTD.
9929 145 169 34 China Netcom Corp.
4739 140 58 128 Commerical Internet eXchange
9238 135 8 18 TATA ISP
7539 129 140 103 TANet2, sponsored by NSC, TAI
4716 128 745 122 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1539 8848 1084 UUNET Technologies, Inc.
7018 1337 7181 921 AT&T
1239 956 3021 673 Sprint
3908 903 1532 478 Supernet, Inc.
7132 880 6573 228 Southwestern Bell Internet Se
189 684 340 296 Genuity
11305 647 170 72 Interland Incorporated
1 614 2602 415 GENUITY
7843 608 361 162 Adelphia Corp.
4323 602 525 175 Time Warner Communications, I
18566 601 160 8 Covad Communications
852 527 1124 416 Telus Advanced Communications
6197 522 351 217 BellSouth Network Solutions,
705 510 273 333 UUNET Technologies, Inc.
209 496 2109 301 Qwest
7066 485 204 261 Virginia Polytechnic Institut
6198 475 247 184 BellSouth Network Solutions,
20115 463 194 284 Charter Communications
690 448 64 294 Merit Network
2386 408 541 230 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 743 2170 630 UUNET - Commercial IP service
3301 303 1171 290 TeliaNet Sweden
3320 267 2004 228 Deutsche Telekom AG
719 265 307 125 LANLINK autonomous system
3215 260 834 149 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 226 384 214 COLT Internet - International
1257 224 311 186 SWIPnet Swedish IP Network
5400 204 143 123 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
5515 179 795 150 Sonera Solution Autonomous Sy
8708 153 44 150 Romania Data Systems S.A.
3303 142 549 137 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 124 1315 114 BTnet UK Regional network
3246 120 384 116 Song Networks
3269 118 823 65 TELECOM ITALIA
3352 109 780 32 Ibernet, Internet Access Netw
5511 101 178 81 France Telecom
2647 96 4129 40 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 98 107 ImpSat
7303 238 37 53 Telecom Argentina Stet-France
8151 214 350 116 UniNet S.A. de C.V.
11172 170 66 40 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 131 189 94 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
6147 99 70 21 Telefonica Del Peru
11340 94 2 29 Red Universitaria Nacional
11992 87 8 37 Integrated Systems
13999 86 36 8 Mega Cable S.A. de C.V.
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 72 12 36 Telefonica Empresas
4270 68 18 9 Red de Interconexion Universi
11830 67 5 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
15034 62 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 880 652 Southwestern Bell Internet Se
18566 601 593 Covad Communications
11305 647 575 Interland Incorporated
7843 608 446 Adelphia Corp.
4323 602 427 Time Warner Communications, I
3908 903 425 Supernet, Inc.
7018 1337 416 AT&T
189 684 388 Genuity
4755 398 338 Videsh Sanchar Nigam Ltd. Aut
6197 522 305 BellSouth Network Solutions,
1221 1054 304 Telstra Pty Ltd
27364 319 301 Armstrong Cable Services
4355 397 294 EarthLink, Inc.
6198 475 291 BellSouth Network Solutions,
6347 369 288 SAVVIS Communications Corpora
1239 956 283 Sprint
376 384 268 Reseau Interordinateurs Scien
22909 277 265 Comcast Cable Corporation
17676 250 231 XTAGE CORPORATION
7066 485 224 Virginia Polytechnic Institut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
172.208.0.0/14 1668 GNN Hosting Service
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
192.158.254.0/24 705 UUNET Technologies, Inc.
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 /8:20 /9:5 /10:8 /11:13 /12:53
/13:98 /14:256 /15:469 /16:7423 /17:1704 /18:3025
/19:8493 /20:8455 /21:6167 /22:9091 /23:10656 /24:69358
/25:157 /26:247 /27:53 /28:42 /29:26 /30:21
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 607 684 Genuity
18566 595 601 Covad Communications
11305 573 647 Interland Incorporated
3908 569 903 Supernet, Inc.
7018 470 1337 AT&T
702 455 743 UUNET - Commercial IP service
701 432 1539 UUNET Technologies, Inc.
690 406 448 Merit Network
6197 394 522 BellSouth Network Solutions,
7066 381 485 Virginia Polytechnic Institut
6198 371 475 BellSouth Network Solutions,
7843 366 608 Adelphia Corp.
1239 358 956 Sprint
20115 323 463 Charter Communications
27364 313 319 Armstrong Cable Services
19262 227 268 Verizon Global Networks
1 223 614 GENUITY
4355 217 397 EarthLink, Inc.
3320 208 267 Deutsche Telekom AG
705 203 510 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:700 13:1 15:4 16:1 17:3
20:7 24:855 25:1 32:95 38:40 40:21
44:2 57:16 61:249 62:354 63:1873 64:1946
65:1968 66:2583 67:177 68:373 69:174 80:369
81:126 82:2 128:187 129:173 130:47 131:80
132:26 134:174 135:4 136:116 137:107 138:109
139:64 140:169 141:122 142:94 143:44 144:105
145:14 146:271 147:96 148:291 149:61 150:70
151:69 152:233 153:61 154:7 155:117 156:53
157:45 158:123 159:140 160:43 161:75 162:131
163:81 164:311 165:142 166:95 167:320 168:173
169:73 170:315 171:8 192:5328 193:2455 194:1957
195:1071 196:475 198:3593 199:2712 200:2967 202:3853
203:5221 204:2986 205:2049 206:2341 207:2435 208:2607
209:2872 210:836 211:354 212:963 213:828 214:19
215:23 216:3556 217:643 218:90 219:45 220:95
221:3
End of report
