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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 21 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125822
Prefixes after maximum aggregation: 78976
Unique aggregates announced to Internet: 59500
Total ASes present in the Internet Routing Table: 15385
Origin-only ASes present in the Internet Routing Table: 13337
Origin ASes announcing only one prefix: 6044
Transit ASes present in the Internet Routing Table: 2048
Transit-only ASes present in the Internet Routing Table: 71
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1252798816
Equivalent to 74 /8s, 172 /16s and 49 /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: 55407
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21523
Total APNIC prefixes after maximum aggregation: 12555
Prefixes being announced from the APNIC address blocks: 19959
Unique aggregates announced from the APNIC address blocks: 12232
APNIC Region origin ASes present in the Internet Routing Table: 1826
APNIC Region origin ASes announcing only one prefix: 528
APNIC Region transit ASes present in the Internet Routing Table: 298
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 115916704
Equivalent to 6 /8s, 232 /16s and 191 /24s
Percentage of available APNIC address space announced: 62.5
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: 77154
Total ARIN prefixes after maximum aggregation: 48138
Prefixes being announced from the ARIN address blocks: 55398
Unique aggregates announced from the ARIN address blocks: 16462
ARIN Region origin ASes present in the Internet Routing Table: 8492
ARIN Region origin ASes announcing only one prefix: 2903
ARIN Region transit ASes present in the Internet Routing Table: 819
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 193262080
Equivalent to 11 /8s, 132 /16s and 242 /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: 21740
Total RIPE prefixes after maximum aggregation: 16029
Prefixes being announced from the RIPE address blocks: 18244
Unique aggregates announced from the RIPE address blocks: 12260
RIPE Region origin ASes present in the Internet Routing Table: 4659
RIPE Region origin ASes announcing only one prefix: 2526
RIPE Region transit ASes present in the Internet Routing Table: 830
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 132410944
Equivalent to 7 /8s, 228 /16s and 110 /24s
Percentage of available RIPE address space announced: 71.7
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: 5402
Total LACNIC prefixes after maximum aggregation: 2254
Prefixes being announced from the LACNIC address blocks: 4806
Unique aggregates announced from the LACNIC address blocks: 3002
LACNIC Region origin ASes present in the Internet Routing Table: 337
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.4
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12776192
Equivalent to 0 /8s, 194 /16s and 243 /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 1056 1070 752 Telstra Pty Ltd
4755 398 132 60 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 350 SINET Japan
17557 345 24 149 Pakistan Telecom
703 335 371 268 UUNET
2764 307 325 274 connect.com.au pty ltd
7474 271 306 204 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 244 773 211 DACOM Corporation
9583 233 37 21 Satyam Infoway Ltd.,
4134 225 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.
4739 139 58 127 Commerical Internet eXchange
9929 139 169 34 China Netcom Corp.
9238 135 8 18 TATA ISP
4716 128 745 122 TTnet
7539 126 154 100 TANet2, sponsored by NSC, TAI
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1540 8848 1085 UUNET Technologies, Inc.
7018 1336 7179 921 AT&T
1239 952 3020 670 Sprint
3908 906 1548 477 Supernet, Inc.
7132 891 6573 229 Southwestern Bell Internet Se
189 684 340 296 Genuity
11305 647 170 72 Interland Incorporated
1 610 2602 412 GENUITY
7843 609 361 162 Adelphia Corp.
4323 601 525 175 Time Warner Communications, I
18566 601 160 8 Covad Communications
852 527 1124 416 Telus Advanced Communications
6197 518 350 213 BellSouth Network Solutions,
705 509 273 332 UUNET Technologies, Inc.
209 498 2108 302 Qwest
7066 487 204 261 Virginia Polytechnic Institut
6198 474 231 183 BellSouth Network Solutions,
20115 463 194 284 Charter Communications
690 448 64 294 Merit Network
2386 409 542 231 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 745 2172 632 UUNET - Commercial IP service
3301 303 1171 290 TeliaNet Sweden
3320 267 2004 228 Deutsche Telekom AG
719 264 307 125 LANLINK autonomous system
3215 258 834 149 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 225 384 213 COLT Internet - International
1257 223 311 185 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 140 549 137 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 98 4129 40 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 98 107 ImpSat
7303 237 37 58 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
11340 105 3 33 Red Universitaria Nacional
6147 99 70 21 Telefonica Del Peru
11992 88 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 891 662 Southwestern Bell Internet Se
18566 601 593 Covad Communications
11305 647 575 Interland Incorporated
7843 609 447 Adelphia Corp.
3908 906 429 Supernet, Inc.
4323 601 426 Time Warner Communications, I
7018 1336 415 AT&T
189 684 388 Genuity
4755 398 338 Videsh Sanchar Nigam Ltd. Aut
6197 518 305 BellSouth Network Solutions,
1221 1056 304 Telstra Pty Ltd
27364 319 301 Armstrong Cable Services
4355 397 294 EarthLink, Inc.
6198 474 291 BellSouth Network Solutions,
6347 368 288 SAVVIS Communications Corpora
1239 952 282 Sprint
376 383 267 Reseau Interordinateurs Scien
22909 277 265 Comcast Cable Corporation
17676 250 231 XTAGE CORPORATION
7066 487 226 Virginia Polytechnic Institut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65021 PRIVATE 128.216.1.0/24 619 Department of Navy
65021 PRIVATE 128.216.4.0/24 619 Department of Navy
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
/13:99 /14:257 /15:470 /16:7430 /17:1701 /18:3005
/19:8481 /20:8519 /21:6156 /22:9075 /23:10647 /24:69301
/25:157 /26:252 /27:57 /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 570 906 Supernet, Inc.
7018 469 1336 AT&T
702 456 745 UUNET - Commercial IP service
701 430 1540 UUNET Technologies, Inc.
690 406 448 Merit Network
6197 390 518 BellSouth Network Solutions,
7066 383 487 Virginia Polytechnic Institut
6198 371 474 BellSouth Network Solutions,
7843 367 609 Adelphia Corp.
1239 358 952 Sprint
20115 323 463 Charter Communications
27364 313 319 Armstrong Cable Services
19262 227 268 Verizon Global Networks
1 223 610 GENUITY
4355 217 397 EarthLink, Inc.
3320 208 267 Deutsche Telekom AG
705 203 509 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:7 24:855 25:1 32:95 38:40 40:21
44:2 57:15 61:254 62:362 63:1870 64:1947
65:1967 66:2585 67:177 68:371 69:164 80:368
81:123 128:135 129:172 130:47 131:79 132:26
134:174 135:4 136:116 137:107 138:108 139:64
140:167 141:122 142:94 143:42 144:105 145:12
146:272 147:96 148:290 149:60 150:70 151:69
152:232 153:61 154:7 155:116 156:53 157:45
158:123 159:138 160:43 161:75 162:130 163:78
164:313 165:142 166:95 167:320 168:171 169:73
170:315 171:8 192:5322 193:2455 194:1955 195:1062
196:478 198:3591 199:2718 200:2966 202:3830 203:5231
204:3000 205:2047 206:2339 207:2433 208:2599 209:2893
210:837 211:353 212:977 213:822 214:19 215:23
216:3557 217:648 218:92 219:45 220:95 221:3
End of report
