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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 30 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125096
Prefixes after maximum aggregation: 78327
Unique aggregates announced to Internet: 59051
Total ASes present in the Internet Routing Table: 15097
Origin-only ASes present in the Internet Routing Table: 13098
Origin ASes announcing only one prefix: 5944
Transit ASes present in the Internet Routing Table: 1999
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.8
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: 19
Number of addresses announced to Internet: 1226176512
Equivalent to 73 /8s, 21 /16s and 248 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54264
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21126
Total APNIC prefixes after maximum aggregation: 12317
Prefixes being announced from the APNIC address blocks: 19571
Unique aggregates announced from the APNIC address blocks: 11995
APNIC Region origin ASes present in the Internet Routing Table: 1784
APNIC Region origin ASes announcing only one prefix: 519
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110787808
Equivalent to 6 /8s, 154 /16s and 124 /24s
Percentage of available APNIC address space announced: 59.7
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: 77128
Total ARIN prefixes after maximum aggregation: 48003
Prefixes being announced from the ARIN address blocks: 55123
Unique aggregates announced from the ARIN address blocks: 16431
ARIN Region origin ASes present in the Internet Routing Table: 8360
ARIN Region origin ASes announcing only one prefix: 2862
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191421184
Equivalent to 11 /8s, 104 /16s and 219 /24s
Percentage of available ARIN address space announced: 71.3
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: 21519
Total RIPE prefixes after maximum aggregation: 15778
Prefixes being announced from the RIPE address blocks: 18087
Unique aggregates announced from the RIPE address blocks: 12066
RIPE Region origin ASes present in the Internet Routing Table: 4547
RIPE Region origin ASes announcing only one prefix: 2476
RIPE Region transit ASes present in the Internet Routing Table: 805
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129711488
Equivalent to 7 /8s, 187 /16s and 61 /24s
Percentage of available RIPE address space announced: 70.3
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: 5322
Total LACNIC prefixes after maximum aggregation: 2229
Prefixes being announced from the LACNIC address blocks: 4756
Unique aggregates announced from the LACNIC address blocks: 2937
LACNIC Region origin ASes present in the Internet Routing Table: 334
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: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12506112
Equivalent to 0 /8s, 190 /16s and 212 /24s
Percentage of available LACNIC address space announced: 37.3
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 1101 1104 790 Telstra Pty Ltd
4755 414 136 74 Videsh Sanchar Nigam Ltd. Aut
703 399 384 308 UUNET
2907 386 1992 363 SINET Japan
17557 376 28 142 Pakistan Telecom
2764 321 341 289 connect.com.au pty ltd
4814 297 85 23 China Telecom (Group)
7474 272 291 208 Optus Communications Pty Ltd
17676 245 3782 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 225 2022 115 Data Communications Bureau
9583 223 33 14 Satyam Infoway Ltd.,
4766 214 2078 160 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
4515 123 104 50 Star Internet Services Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1566 8922 1105 UUNET Technologies, Inc.
7018 1331 7142 922 AT&T
4151 964 691 60 USDA
7132 962 6476 209 Southwestern Bell Internet Se
1239 961 3112 679 Sprint
3908 918 1570 471 Supernet, Inc.
1 734 2734 466 GENUITY
7843 727 404 197 Adelphia Corp.
189 706 341 289 Genuity
4323 577 514 169 Time Warner Communications, I
18566 548 144 5 Covad Communications
852 547 1110 430 Telus Advanced Communications
2386 542 486 268 AT&T Data Communications Serv
705 529 280 234 UUNET Technologies, Inc.
3561 509 2341 331 Cable & Wireless USA
209 495 2120 294 Qwest
690 488 71 315 Merit Network
7066 483 204 257 Virginia Polytechnic Institut
6197 479 340 196 BellSouth Network Solutions,
20115 475 189 295 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 768 2185 638 UUNET - Commercial IP service
3301 308 1173 298 TeliaNet Sweden
3215 305 852 175 France Telecom Transpac
3320 263 2004 224 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 227 328 189 SWIPnet Swedish IP Network
5400 206 112 114 BT Ignite European Backbone
719 197 307 125 LANLINK autonomous system
8220 197 364 186 COLT Internet - International
5515 187 779 160 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 162 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 122 1298 111 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 102 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 293 98 107 ImpSat
7303 255 36 65 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 147 206 104 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 96 3 30 Red Universitaria Nacional
6147 91 62 20 Telefonica Del Peru
11992 88 8 36 Integrated Systems
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
8065 73 8 17 Empresas Publicas de Medellin
6535 72 5 21 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
4270 67 18 9 Red de Interconexion Universi
11830 66 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
15034 60 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 964 904 USDA
7132 962 753 Southwestern Bell Internet Se
18566 548 543 Covad Communications
7843 727 530 Adelphia Corp.
3908 918 447 Supernet, Inc.
189 706 417 Genuity
7018 1331 409 AT&T
4323 577 408 Time Warner Communications, I
4755 414 340 Videsh Sanchar Nigam Ltd. Aut
1221 1101 311 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 364 285 SAVVIS Communications Corpora
6198 459 284 BellSouth Network Solutions,
6197 479 283 BellSouth Network Solutions,
1239 961 282 Sprint
4355 387 281 EarthLink, Inc.
22927 288 275 TELEFONICA DE ARGENTINA
2386 542 274 AT&T Data Communications Serv
4814 297 274 China Telecom (Group)
1 734 268 GENUITY
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
192.16.52.0/24 1239 Sprint
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
192.136.135.0/24 1239 Sprint
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
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:7 /10:8 /11:13 /12:50
/13:92 /14:253 /15:465 /16:7396 /17:1674 /18:2968
/19:8376 /20:8365 /21:5982 /22:8979 /23:10552 /24:69426
/25:157 /26:180 /27:49 /28:25 /29:13 /30:23
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 574 918 Supernet, Inc.
18566 542 548 Covad Communications
702 477 768 UUNET - Commercial IP service
7843 474 727 Adelphia Corp.
7018 465 1331 AT&T
690 437 488 Merit Network
701 433 1566 UUNET Technologies, Inc.
7066 382 483 Virginia Polytechnic Institut
6198 362 459 BellSouth Network Solutions,
1239 359 961 Sprint
6197 357 479 BellSouth Network Solutions,
20115 341 475 Charter Communications
2386 324 542 AT&T Data Communications Serv
4814 284 297 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 734 GENUITY
3215 228 305 France Telecom Transpac
22927 226 288 TELEFONICA DE ARGENTINA
4355 220 387 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:693 13:1 15:4 17:3 20:8 24:825
25:1 32:85 38:121 40:19 44:2 55:1
57:16 61:437 62:540 63:1895 64:1562 65:1922
66:2394 67:169 68:368 69:117 80:354 81:152
128:154 129:178 130:44 131:82 132:11 133:2
134:154 135:4 136:113 137:107 138:109 139:66
140:151 141:107 142:96 143:45 144:102 145:17
146:267 147:94 148:281 149:72 150:43 151:78
152:244 153:56 154:2 155:110 156:46 157:40
158:125 159:144 160:37 161:74 162:146 163:75
164:308 165:140 166:92 167:330 168:398 169:57
170:322 171:7 192:5343 193:2411 194:1991 195:1011
196:461 198:3565 199:3639 200:2961 202:3767 203:5152
204:3040 205:2016 206:2406 207:2396 208:2640 209:2833
210:779 211:321 212:962 213:809 214:20 215:21
216:3232 217:626 218:90 219:21 220:94
End of report
