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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 21 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 126093
Prefixes after maximum aggregation: 78662
Unique aggregates announced to Internet: 59187
Total ASes present in the Internet Routing Table: 15195
Origin-only ASes present in the Internet Routing Table: 13158
Origin ASes announcing only one prefix: 5960
Transit ASes present in the Internet Routing Table: 2037
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1230576832
Equivalent to 73 /8s, 89 /16s and 28 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54837
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21387
Total APNIC prefixes after maximum aggregation: 12435
Prefixes being announced from the APNIC address blocks: 19791
Unique aggregates announced from the APNIC address blocks: 12035
APNIC Region origin ASes present in the Internet Routing Table: 1803
APNIC Region origin ASes announcing only one prefix: 528
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 113139360
Equivalent to 6 /8s, 190 /16s and 94 /24s
Percentage of available APNIC address space announced: 61.0
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: 77646
Total ARIN prefixes after maximum aggregation: 48084
Prefixes being announced from the ARIN address blocks: 55710
Unique aggregates announced from the ARIN address blocks: 16537
ARIN Region origin ASes present in the Internet Routing Table: 8402
ARIN Region origin ASes announcing only one prefix: 2867
ARIN Region transit ASes present in the Internet Routing Table: 813
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191902208
Equivalent to 11 /8s, 112 /16s and 50 /24s
Percentage of available ARIN address space announced: 71.5
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: 21698
Total RIPE prefixes after maximum aggregation: 15883
Prefixes being announced from the RIPE address blocks: 18183
Unique aggregates announced from the RIPE address blocks: 12060
RIPE Region origin ASes present in the Internet Routing Table: 4587
RIPE Region origin ASes announcing only one prefix: 2481
RIPE Region transit ASes present in the Internet Routing Table: 821
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 131014528
Equivalent to 7 /8s, 207 /16s and 31 /24s
Percentage of available RIPE address space announced: 71.0
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: 5359
Total LACNIC prefixes after maximum aggregation: 2260
Prefixes being announced from the LACNIC address blocks: 4774
Unique aggregates announced from the LACNIC address blocks: 3001
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12579328
Equivalent to 0 /8s, 191 /16s and 242 /24s
Percentage of available LACNIC address space announced: 37.5
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 1081 1103 768 Telstra Pty Ltd
4755 415 134 72 Videsh Sanchar Nigam Ltd. Aut
2907 387 1976 364 SINET Japan
17557 376 27 150 Pakistan Telecom
703 351 374 279 UUNET
2764 320 342 283 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 269 290 202 Optus Communications Pty Ltd
17676 247 3814 19 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
9583 223 34 17 Satyam Infoway Ltd.,
4134 217 1972 110 Data Communications Bureau
4766 213 2475 159 Korea Internet Exchange for "
9443 183 58 83 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
4739 137 57 125 Commerical Internet eXchange
9498 135 9 13 BHARTI BT INTERNET LTD.
9238 132 8 17 TATA ISP
4716 127 729 121 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1562 8919 1101 UUNET Technologies, Inc.
7018 1345 7216 932 AT&T
4151 1207 691 60 USDA
7132 964 6475 207 Southwestern Bell Internet Se
1239 942 3010 662 Sprint
3908 924 1572 479 Supernet, Inc.
189 706 341 289 Genuity
7843 664 347 176 Adelphia Corp.
1 657 2649 447 GENUITY
4323 597 525 174 Time Warner Communications, I
2386 586 507 272 AT&T Data Communications Serv
18566 577 160 8 Covad Communications
705 539 291 234 UUNET Technologies, Inc.
852 536 1155 424 Telus Advanced Communications
6197 488 341 196 BellSouth Network Solutions,
209 487 2104 293 Qwest
7066 484 204 260 Virginia Polytechnic Institut
690 476 68 315 Merit Network
20115 474 195 288 Charter Communications
6198 462 229 176 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 749 2175 635 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 308 1157 296 TeliaNet Sweden
3215 303 852 174 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
8220 222 384 210 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5400 204 112 114 BT Ignite European Backbone
5515 182 795 153 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 154 44 149 Romania Data Systems S.A.
3303 142 549 141 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 122 1299 112 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 113 381 111 Song Networks
3352 107 764 31 Ibernet, Internet Access Netw
2647 99 4129 39 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 300 98 108 ImpSat
7303 247 36 64 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 169 66 41 Servicios Alestra S.A de C.V
6503 139 205 99 AVANTEL, S.A.
16814 138 9 19 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 96 62 20 Telefonica Del Peru
11992 88 8 37 Integrated Systems
8065 80 8 14 Empresas Publicas de Medellin
4270 74 18 10 Red de Interconexion Universi
6535 74 5 23 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
7738 66 186 12 Telecomunicacoes da Bahia S.A
11830 66 4 27 Instituto Costarricense de El
7927 65 5 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1207 1147 USDA
7132 964 757 Southwestern Bell Internet Se
18566 577 569 Covad Communications
7843 664 488 Adelphia Corp.
3908 924 445 Supernet, Inc.
4323 597 423 Time Warner Communications, I
189 706 417 Genuity
7018 1345 413 AT&T
4755 415 343 Videsh Sanchar Nigam Ltd. Aut
2386 586 314 AT&T Data Communications Serv
1221 1081 313 Telstra Pty Ltd
705 539 305 UUNET Technologies, Inc.
6197 488 292 BellSouth Network Solutions,
4355 401 290 EarthLink, Inc.
6198 462 286 BellSouth Network Solutions,
6347 365 286 SAVVIS Communications Corpora
1239 942 280 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 294 274 Armstrong Cable Services
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
64414 RESERVED 209.173.52.0/24 7786 Lockheed Martin IMS
64414 RESERVED 209.173.53.0/24 7786 Lockheed Martin IMS
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
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:5 /10:8 /11:13 /12:51
/13:98 /14:254 /15:473 /16:7415 /17:1678 /18:2970
/19:8410 /20:8394 /21:6078 /22:9020 /23:10674 /24:70011
/25:163 /26:221 /27:52 /28:26 /29:12 /30:23
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 629 706 Genuity
3908 580 924 Supernet, Inc.
18566 571 577 Covad Communications
7018 467 1345 AT&T
702 459 749 UUNET - Commercial IP service
701 434 1562 UUNET Technologies, Inc.
7843 428 664 Adelphia Corp.
690 427 476 Merit Network
7066 381 484 Virginia Polytechnic Institut
2386 365 586 AT&T Data Communications Serv
6197 363 488 BellSouth Network Solutions,
6198 361 462 BellSouth Network Solutions,
1239 352 942 Sprint
20115 335 474 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 249 657 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:701 13:1 15:4 16:1 17:3 20:8
24:831 25:1 32:87 38:121 40:19 44:2
55:1 57:17 61:444 62:564 63:1870 64:1776
65:1932 66:2434 67:174 68:381 69:135 80:349
81:128 128:144 129:179 130:45 131:80 132:11
133:1 134:176 135:4 136:116 137:109 138:108
139:64 140:134 141:117 142:93 143:44 144:104
145:14 146:268 147:95 148:290 149:70 150:44
151:79 152:241 153:57 154:7 155:108 156:47
157:40 158:125 159:145 160:39 161:75 162:141
163:75 164:308 165:144 166:93 167:335 168:398
169:62 170:312 171:7 192:5304 193:2419 194:1981
195:1045 196:464 198:3577 199:3864 200:2966 202:3752
203:5232 204:3009 205:2047 206:2369 207:2385 208:2627
209:2843 210:793 211:333 212:940 213:781 214:20
215:23 216:3264 217:621 218:90 219:33 220:95
221:2
End of report
