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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 03 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125962
Prefixes after maximum aggregation: 78788
Unique aggregates announced to Internet: 59291
Total ASes present in the Internet Routing Table: 15263
Origin-only ASes present in the Internet Routing Table: 13226
Origin ASes announcing only one prefix: 5991
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1231537248
Equivalent to 73 /8s, 103 /16s and 196 /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: 55676
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21695
Total APNIC prefixes after maximum aggregation: 12530
Prefixes being announced from the APNIC address blocks: 20091
Unique aggregates announced from the APNIC address blocks: 12085
APNIC Region origin ASes present in the Internet Routing Table: 1812
APNIC Region origin ASes announcing only one prefix: 522
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: 113808800
Equivalent to 6 /8s, 200 /16s and 149 /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: 76930
Total ARIN prefixes after maximum aggregation: 48042
Prefixes being announced from the ARIN address blocks: 55074
Unique aggregates announced from the ARIN address blocks: 16528
ARIN Region origin ASes present in the Internet Routing Table: 8436
ARIN Region origin ASes announcing only one prefix: 2883
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: 19
Number of ARIN addresses announced to Internet: 191802112
Equivalent to 11 /8s, 110 /16s and 171 /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: 21963
Total RIPE prefixes after maximum aggregation: 15950
Prefixes being announced from the RIPE address blocks: 18447
Unique aggregates announced from the RIPE address blocks: 12142
RIPE Region origin ASes present in the Internet Routing Table: 4611
RIPE Region origin ASes announcing only one prefix: 2500
RIPE Region transit ASes present in the Internet Routing Table: 818
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 131501824
Equivalent to 7 /8s, 214 /16s and 143 /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: 5370
Total LACNIC prefixes after maximum aggregation: 2266
Prefixes being announced from the LACNIC address blocks: 4795
Unique aggregates announced from the LACNIC address blocks: 2988
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 86
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: 12643584
Equivalent to 0 /8s, 192 /16s and 237 /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 1077 1103 770 Telstra Pty Ltd
4755 417 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 375 1895 351 SINET Japan
17557 363 26 143 Pakistan Telecom
703 343 371 273 UUNET
2764 313 341 278 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 267 290 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 236 2046 118 Data Communications Bureau
9583 228 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 143 10 18 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 1557 8917 1097 UUNET Technologies, Inc.
7018 1334 7193 922 AT&T
7132 988 6475 207 Southwestern Bell Internet Se
1239 949 3018 668 Sprint
3908 916 1556 477 Supernet, Inc.
189 705 341 292 Genuity
11305 657 171 82 Interland Incorporated
1 639 2591 434 GENUITY
7843 634 354 167 Adelphia Corp.
4323 598 526 176 Time Warner Communications, I
18566 581 160 8 Covad Communications
2386 540 533 302 AT&T Data Communications Serv
852 527 1123 416 Telus Advanced Communications
705 512 273 335 UUNET Technologies, Inc.
209 491 2106 299 Qwest
6197 490 343 194 BellSouth Network Solutions,
7066 482 204 259 Virginia Polytechnic Institut
20115 465 194 286 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
702 746 2173 633 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
2529 337 285 33 Demon Internet
3301 303 1172 290 TeliaNet Sweden
3215 302 852 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 226 311 188 SWIPnet Swedish IP Network
5400 224 140 133 BT Ignite European Backbone
8220 223 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5515 181 795 152 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 155 44 149 Romania Data Systems S.A.
3303 140 549 137 Swisscom Ltd
8895 131 58 29 KACST/ISU Riyadh Autonomous S
12302 128 18 35 MobiFon S.A.
2856 124 1315 114 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 115 365 113 Song Networks
3352 109 780 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 98 110 ImpSat
7303 237 37 58 Telecom Argentina Stet-France
8151 214 350 117 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 104 3 33 Red Universitaria Nacional
6147 98 70 21 Telefonica Del Peru
11992 87 8 36 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 634 467 Adelphia Corp.
3908 916 439 Supernet, Inc.
4323 598 422 Time Warner Communications, I
189 705 413 Genuity
7018 1334 412 AT&T
4755 417 346 Videsh Sanchar Nigam Ltd. Aut
1221 1077 307 Telstra Pty Ltd
2529 337 304 Demon Internet
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 949 281 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
22909 274 264 Comcast Cable Corporation
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 /16:7419 /17:1680 /18:2980
/19:8436 /20:8476 /21:6136 /22:9037 /23:10642 /24:69575
/25:218 /26:296 /27:53 /28:32 /29:22 /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 571 916 Supernet, Inc.
7018 460 1334 AT&T
702 455 746 UUNET - Commercial IP service
701 439 1557 UUNET Technologies, Inc.
690 410 452 Merit Network
7843 396 634 Adelphia Corp.
7066 379 482 Virginia Polytechnic Institut
6197 366 490 BellSouth Network Solutions,
6198 360 462 BellSouth Network Solutions,
1239 355 949 Sprint
20115 326 465 Charter Communications
2386 322 540 AT&T Data Communications Serv
2529 315 337 Demon Internet
27364 300 307 Armstrong Cable Services
3320 289 346 Deutsche Telekom AG
4814 281 295 China Telecom (Group)
1 239 639 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:703 13:1 15:4 16:1 17:3
20:8 24:833 25:1 32:87 38:59 40:20
44:2 55:1 57:17 61:462 62:407 63:1867
64:1919 65:1949 66:2500 67:176 68:378 69:157
80:351 81:127 128:139 129:175 130:47 131:80
132:25 133:1 134:176 135:3 136:117 137:107
138:110 139:64 140:138 141:117 142:94 143:43
144:103 145:14 146:275 147:96 148:287 149:60
150:44 151:73 152:232 153:57 154:3 155:115
156:50 157:39 158:127 159:141 160:43 161:76
162:128 163:77 164:308 165:143 166:92 167:323
168:398 169:61 170:312 171:7 192:5325 193:2459
194:2027 195:1062 196:478 198:3567 199:2728 200:2988
202:3779 203:5257 204:2998 205:2045 206:2371 207:2398
208:2618 209:2885 210:822 211:338 212:1082 213:790
214:20 215:23 216:3524 217:621 218:80 219:39
220:94 221:2
End of report
