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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 02 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125504
Prefixes after maximum aggregation: 78740
Unique aggregates announced to Internet: 59216
Total ASes present in the Internet Routing Table: 15264
Origin-only ASes present in the Internet Routing Table: 13228
Origin ASes announcing only one prefix: 5992
Transit ASes present in the Internet Routing Table: 2036
Transit-only ASes present in the Internet Routing Table: 70
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1231066720
Equivalent to 73 /8s, 96 /16s and 150 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55268
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21629
Total APNIC prefixes after maximum aggregation: 12502
Prefixes being announced from the APNIC address blocks: 20030
Unique aggregates announced from the APNIC address blocks: 12042
APNIC Region origin ASes present in the Internet Routing Table: 1810
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 301
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 113755040
Equivalent to 6 /8s, 199 /16s and 195 /24s
Percentage of available APNIC address space announced: 61.3
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: 76910
Total ARIN prefixes after maximum aggregation: 48047
Prefixes being announced from the ARIN address blocks: 55100
Unique aggregates announced from the ARIN address blocks: 16512
ARIN Region origin ASes present in the Internet Routing Table: 8438
ARIN Region origin ASes announcing only one prefix: 2884
ARIN Region transit ASes present in the Internet Routing Table: 821
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191757312
Equivalent to 11 /8s, 109 /16s and 252 /24s
Percentage of available ARIN address space announced: 71.4
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: 21589
Total RIPE prefixes after maximum aggregation: 15929
Prefixes being announced from the RIPE address blocks: 18075
Unique aggregates announced from the RIPE address blocks: 12134
RIPE Region origin ASes present in the Internet Routing Table: 4613
RIPE Region origin ASes announcing only one prefix: 2502
RIPE Region transit ASes present in the Internet Routing Table: 816
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 131518464
Equivalent to 7 /8s, 214 /16s and 208 /24s
Percentage of available RIPE address space announced: 71.3
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: 5372
Total LACNIC prefixes after maximum aggregation: 2262
Prefixes being announced from the LACNIC address blocks: 4798
Unique aggregates announced from the LACNIC address blocks: 2989
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 85
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: 12643840
Equivalent to 0 /8s, 192 /16s and 238 /24s
Percentage of available LACNIC address space announced: 37.7
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 1074 1102 767 Telstra Pty Ltd
4755 418 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1911 352 SINET Japan
17557 368 26 146 Pakistan Telecom
703 343 371 273 UUNET
2764 313 341 278 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 269 290 202 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 237 2054 117 Data Communications Bureau
9583 227 34 17 Satyam Infoway Ltd.,
4766 212 2475 159 Korea Internet Exchange for "
9443 182 58 82 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 142 10 17 BHARTI BT INTERNET LTD.
4739 138 57 126 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 130 156 104 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 1556 8917 1096 UUNET Technologies, Inc.
7018 1336 7193 922 AT&T
7132 988 6475 207 Southwestern Bell Internet Se
1239 947 3018 666 Sprint
3908 918 1556 478 Supernet, Inc.
189 705 341 292 Genuity
11305 657 171 82 Interland Incorporated
7843 646 353 172 Adelphia Corp.
1 640 2591 435 GENUITY
4323 598 526 176 Time Warner Communications, I
18566 581 160 8 Covad Communications
2386 547 533 298 AT&T Data Communications Serv
852 530 1125 418 Telus Advanced Communications
705 509 272 332 UUNET Technologies, Inc.
209 491 2106 299 Qwest
6197 490 343 194 BellSouth Network Solutions,
7066 482 204 259 Virginia Polytechnic Institut
20115 464 194 286 Charter Communications
6198 462 230 177 BellSouth Network Solutions,
690 452 66 296 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 750 2157 637 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 306 1173 293 TeliaNet Sweden
3215 302 852 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 225 311 187 SWIPnet Swedish IP Network
8220 223 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5400 204 121 115 BT Ignite European Backbone
5515 181 795 152 Sonera Solution Autonomous Sy
786 178 1858 178 The JANET IP Service
8708 154 44 149 Romania Data Systems S.A.
3303 140 549 137 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 123 1299 113 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 114 365 112 Song Networks
3352 109 780 32 Ibernet, Internet Access Netw
2647 99 4129 39 SITA
5511 95 177 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 98 110 ImpSat
7303 238 37 58 Telecom Argentina Stet-France
8151 215 350 118 UniNet S.A. de C.V.
11172 170 66 41 Servicios Alestra S.A de C.V
6503 136 190 99 AVANTEL, S.A.
16814 135 9 17 NSS, S.A.
10620 115 7 32 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 98 70 21 Telefonica Del Peru
11992 88 8 37 Integrated Systems
8065 79 8 15 Empresas Publicas de Medellin
6535 74 5 23 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
13999 68 36 8 Mega Cable S.A. de C.V.
4270 67 18 9 Red de Interconexion Universi
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7738 63 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 988 781 Southwestern Bell Internet Se
11305 657 575 Interland Incorporated
18566 581 573 Covad Communications
7843 646 474 Adelphia Corp.
3908 918 440 Supernet, Inc.
4323 598 422 Time Warner Communications, I
7018 1336 414 AT&T
189 705 413 Genuity
4755 418 347 Videsh Sanchar Nigam Ltd. Aut
1221 1074 307 Telstra Pty Ltd
6197 490 296 BellSouth Network Solutions,
4355 402 291 EarthLink, Inc.
27364 307 287 Armstrong Cable Services
6198 462 285 BellSouth Network Solutions,
6347 363 285 SAVVIS Communications Corpora
1239 947 281 Sprint
4814 295 276 China Telecom (Group)
22927 288 275 TELEFONICA DE ARGENTINA
22909 274 264 Comcast Cable Corporation
2386 547 249 AT&T Data Communications Serv
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65516 PRIVATE 61.232.70.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.71.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.72.0/22 17621 China Netcom Corp.
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
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 /12:52
/13:98 /14:254 /15:466 /16:7413 /17:1679 /18:2976
/19:8434 /20:8477 /21:6139 /22:9041 /23:10639 /24:69277
/25:156 /26:206 /27:54 /28:32 /29:21 /30:21
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 628 705 Genuity
11305 583 657 Interland Incorporated
18566 575 581 Covad Communications
3908 573 918 Supernet, Inc.
7018 462 1336 AT&T
702 460 750 UUNET - Commercial IP service
701 438 1556 UUNET Technologies, Inc.
7843 411 646 Adelphia Corp.
690 410 452 Merit Network
7066 379 482 Virginia Polytechnic Institut
6197 366 490 BellSouth Network Solutions,
6198 360 462 BellSouth Network Solutions,
1239 355 947 Sprint
2386 330 547 AT&T Data Communications Serv
20115 325 464 Charter Communications
27364 300 307 Armstrong Cable Services
3320 289 346 Deutsche Telekom AG
4814 281 295 China Telecom (Group)
1 239 640 GENUITY
22927 226 288 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:703 13:1 15:4 16:1 17:3
20:8 24:834 25:1 32:87 38:59 40:20
44:2 55:1 57:17 61:459 62:398 63:1871
64:1921 65:1947 66:2494 67:176 68:384 69:161
80:351 81:126 128:140 129:176 130:47 131:80
132:12 133:1 134:173 135:3 136:100 137:107
138:110 139:65 140:138 141:117 142:93 143:43
144:103 145:14 146:274 147:96 148:288 149:60
150:44 151:74 152:232 153:57 154:3 155:115
156:50 157:39 158:126 159:142 160:42 161:75
162:128 163:75 164:308 165:144 166:93 167:323
168:392 169:61 170:312 171:7 192:5325 193:2435
194:1959 195:1026 196:479 198:3566 199:2728 200:2989
202:3747 203:5242 204:2995 205:2037 206:2378 207:2407
208:2620 209:2885 210:816 211:338 212:997 213:797
214:20 215:23 216:3522 217:618 218:78 219:39
220:96 221:2
End of report
