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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 31 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125572
Prefixes after maximum aggregation: 78802
Unique aggregates announced to Internet: 59211
Total ASes present in the Internet Routing Table: 15263
Origin-only ASes present in the Internet Routing Table: 13225
Origin ASes announcing only one prefix: 5987
Transit ASes present in the Internet Routing Table: 2038
Transit-only ASes present in the Internet Routing Table: 72
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: 1231283040
Equivalent to 73 /8s, 99 /16s and 227 /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: 55309
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21658
Total APNIC prefixes after maximum aggregation: 12528
Prefixes being announced from the APNIC address blocks: 20053
Unique aggregates announced from the APNIC address blocks: 12054
APNIC Region origin ASes present in the Internet Routing Table: 1809
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: 113772960
Equivalent to 6 /8s, 200 /16s and 9 /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: 76948
Total ARIN prefixes after maximum aggregation: 48081
Prefixes being announced from the ARIN address blocks: 55096
Unique aggregates announced from the ARIN address blocks: 16528
ARIN Region origin ASes present in the Internet Routing Table: 8433
ARIN Region origin ASes announcing only one prefix: 2879
ARIN Region transit ASes present in the Internet Routing Table: 817
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 191899904
Equivalent to 11 /8s, 112 /16s and 41 /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: 21593
Total RIPE prefixes after maximum aggregation: 15930
Prefixes being announced from the RIPE address blocks: 18081
Unique aggregates announced from the RIPE address blocks: 12111
RIPE Region origin ASes present in the Internet Routing Table: 4616
RIPE Region origin ASes announcing only one prefix: 2502
RIPE Region transit ASes present in the Internet Routing Table: 819
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 131508480
Equivalent to 7 /8s, 214 /16s and 169 /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: 5369
Total LACNIC prefixes after maximum aggregation: 2263
Prefixes being announced from the LACNIC address blocks: 4793
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: 12644096
Equivalent to 0 /8s, 192 /16s and 239 /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 1075 1103 768 Telstra Pty Ltd
4755 420 134 74 Videsh Sanchar Nigam Ltd. Aut
2907 376 1911 352 SINET Japan
17557 371 26 151 Pakistan Telecom
703 344 372 274 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 236 2050 116 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 141 10 17 BHARTI BT INTERNET LTD.
4739 138 57 126 Commerical Internet eXchange
9238 132 8 23 TATA ISP
7539 129 156 103 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 1558 8918 1098 UUNET Technologies, Inc.
7018 1337 7209 923 AT&T
7132 988 6475 207 Southwestern Bell Internet Se
1239 947 3018 666 Sprint
3908 917 1556 478 Supernet, Inc.
189 705 341 292 Genuity
11305 657 171 82 Interland Incorporated
7843 655 353 181 Adelphia Corp.
1 638 2589 434 GENUITY
4323 597 526 175 Time Warner Communications, I
18566 581 160 8 Covad Communications
2386 547 517 298 AT&T Data Communications Serv
852 531 1125 418 Telus Advanced Communications
705 510 272 333 UUNET Technologies, Inc.
209 494 2106 300 Qwest
6197 489 343 194 BellSouth Network Solutions,
7066 481 204 259 Virginia Polytechnic Institut
20115 464 194 286 Charter Communications
6198 460 230 177 BellSouth Network Solutions,
690 455 66 297 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 304 1156 291 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
786 179 1874 179 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 234 37 58 Telecom Argentina Stet-France
8151 215 350 118 UniNet S.A. de C.V.
11172 169 66 41 Servicios Alestra S.A de C.V
6503 136 190 99 AVANTEL, S.A.
16814 135 9 17 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 99 70 21 Telefonica Del Peru
11992 89 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
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
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 655 474 Adelphia Corp.
3908 917 439 Supernet, Inc.
4323 597 422 Time Warner Communications, I
7018 1337 414 AT&T
189 705 413 Genuity
4755 420 346 Videsh Sanchar Nigam Ltd. Aut
1221 1075 307 Telstra Pty Ltd
6197 489 295 BellSouth Network Solutions,
4355 402 291 EarthLink, Inc.
27364 307 287 Armstrong Cable Services
6347 363 285 SAVVIS Communications Corpora
6198 460 283 BellSouth Network Solutions,
1239 947 281 Sprint
4814 295 276 China Telecom (Group)
22927 288 275 TELEFONICA DE ARGENTINA
22909 273 258 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 /15:467 /16:7412 /17:1682 /18:2973
/19:8434 /20:8464 /21:6139 /22:9058 /23:10660 /24:69322
/25:156 /26:204 /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 572 917 Supernet, Inc.
7018 462 1337 AT&T
702 460 750 UUNET - Commercial IP service
701 438 1558 UUNET Technologies, Inc.
7843 420 655 Adelphia Corp.
690 413 455 Merit Network
7066 378 481 Virginia Polytechnic Institut
6197 365 489 BellSouth Network Solutions,
6198 358 460 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)
1 239 638 GENUITY
22927 226 288 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:704 13:1 15:4 16:1 17:3
20:8 24:842 25:1 32:87 38:59 40:20
44:2 55:1 57:17 61:459 62:406 63:1877
64:1914 65:1939 66:2499 67:176 68:381 69:159
80:350 81:127 128:141 129:176 130:47 131:79
132:12 133:1 134:176 135:3 136:117 137:107
138:109 139:64 140:137 141:117 142:93 143:44
144:103 145:14 146:273 147:96 148:289 149:68
150:44 151:73 152:233 153:57 154:3 155:115
156:50 157:39 158:126 159:143 160:43 161:76
162:128 163:76 164:307 165:144 166:93 167:322
168:396 169:62 170:312 171:7 192:5311 193:2432
194:1959 195:1022 196:480 198:3572 199:2731 200:2986
202:3772 203:5241 204:3000 205:2038 206:2377 207:2410
208:2620 209:2887 210:813 211:337 212:997 213:793
214:21 215:23 216:3512 217:623 218:77 219:38
220:94 221:2
End of report
