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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 09 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125569
Prefixes after maximum aggregation: 78391
Unique aggregates announced to Internet: 59197
Total ASes present in the Internet Routing Table: 15165
Origin-only ASes present in the Internet Routing Table: 13139
Origin ASes announcing only one prefix: 5983
Transit ASes present in the Internet Routing Table: 2026
Transit-only ASes present in the Internet Routing Table: 73
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1229254144
Equivalent to 73 /8s, 68 /16s and 238 /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: 54480
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21265
Total APNIC prefixes after maximum aggregation: 12350
Prefixes being announced from the APNIC address blocks: 19710
Unique aggregates announced from the APNIC address blocks: 12049
APNIC Region origin ASes present in the Internet Routing Table: 1797
APNIC Region origin ASes announcing only one prefix: 522
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 112872160
Equivalent to 6 /8s, 186 /16s and 74 /24s
Percentage of available APNIC address space announced: 60.8
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: 77300
Total ARIN prefixes after maximum aggregation: 47981
Prefixes being announced from the ARIN address blocks: 55314
Unique aggregates announced from the ARIN address blocks: 16507
ARIN Region origin ASes present in the Internet Routing Table: 8388
ARIN Region origin ASes announcing only one prefix: 2874
ARIN Region transit ASes present in the Internet Routing Table: 803
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191591168
Equivalent to 11 /8s, 107 /16s and 115 /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: 21675
Total RIPE prefixes after maximum aggregation: 15828
Prefixes being announced from the RIPE address blocks: 18197
Unique aggregates announced from the RIPE address blocks: 12032
RIPE Region origin ASes present in the Internet Routing Table: 4574
RIPE Region origin ASes announcing only one prefix: 2501
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: 19
Number of RIPE addresses announced to Internet: 130064512
Equivalent to 7 /8s, 192 /16s and 160 /24s
Percentage of available RIPE address space announced: 70.5
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: 5327
Total LACNIC prefixes after maximum aggregation: 2232
Prefixes being announced from the LACNIC address blocks: 4757
Unique aggregates announced from the LACNIC address blocks: 2984
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: 70
Average LACNIC Region AS path length visible: 5.4
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12507904
Equivalent to 0 /8s, 190 /16s and 219 /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 1094 1104 781 Telstra Pty Ltd
4755 415 133 71 Videsh Sanchar Nigam Ltd. Aut
703 390 383 309 UUNET
2907 388 1993 365 SINET Japan
17557 368 26 147 Pakistan Telecom
2764 316 340 284 connect.com.au pty ltd
4814 294 85 21 China Telecom (Group)
7474 271 291 207 Optus Communications Pty Ltd
17676 247 3814 19 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 225 2022 115 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 216 2478 162 Korea Internet Exchange for "
9443 183 58 82 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
9238 139 8 17 TATA ISP
4739 136 57 125 Commerical Internet eXchange
9498 132 9 19 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1566 8904 1104 UUNET Technologies, Inc.
7018 1334 7154 924 AT&T
4151 1083 691 60 USDA
1239 964 3091 678 Sprint
7132 962 6475 207 Southwestern Bell Internet Se
3908 919 1571 473 Supernet, Inc.
1 729 2710 464 GENUITY
189 706 341 289 Genuity
7843 659 347 169 Adelphia Corp.
4323 586 514 169 Time Warner Communications, I
18566 576 160 8 Covad Communications
852 550 1156 431 Telus Advanced Communications
2386 545 483 285 AT&T Data Communications Serv
705 534 286 238 UUNET Technologies, Inc.
3561 507 2340 329 Cable & Wireless USA
209 494 2105 296 Qwest
7066 485 204 260 Virginia Polytechnic Institut
6197 483 340 193 BellSouth Network Solutions,
690 482 69 315 Merit Network
20115 467 191 288 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 759 2173 640 UUNET - Commercial IP service
3320 347 2004 229 Deutsche Telekom AG
3301 306 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 201 366 190 COLT Internet - International
5400 197 110 112 BT Ignite European Backbone
719 193 307 125 LANLINK autonomous system
5515 189 795 153 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 164 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 124 1299 113 BTnet UK Regional network
3269 114 787 62 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 107 748 30 Ibernet, Internet Access Netw
2874 99 85 38 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 293 98 106 ImpSat
7303 255 36 64 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 166 66 36 Servicios Alestra S.A de C.V
6503 141 206 101 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 95 3 30 Red Universitaria Nacional
6147 91 62 20 Telefonica Del Peru
11992 88 8 36 Integrated Systems
8065 75 8 15 Empresas Publicas de Medellin
4270 74 18 10 Red de Interconexion Universi
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
6535 73 5 22 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
11830 67 5 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1083 1023 USDA
7132 962 755 Southwestern Bell Internet Se
18566 576 568 Covad Communications
7843 659 490 Adelphia Corp.
3908 919 446 Supernet, Inc.
189 706 417 Genuity
4323 586 417 Time Warner Communications, I
7018 1334 410 AT&T
4755 415 344 Videsh Sanchar Nigam Ltd. Aut
1221 1094 313 Telstra Pty Ltd
705 534 296 UUNET Technologies, Inc.
6197 483 290 BellSouth Network Solutions,
6347 371 290 SAVVIS Communications Corpora
4355 393 289 EarthLink, Inc.
6198 464 288 BellSouth Network Solutions,
1239 964 286 Sprint
22927 298 285 TELEFONICA DE ARGENTINA
4814 294 273 China Telecom (Group)
1 729 265 GENUITY
2386 545 260 AT&T Data Communications Serv
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
64512 PRIVATE 194.67.54.0/24 3216 Teleross, Moscow, Ru
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 /9:5 /10:8 /11:13 /12:51
/13:93 /14:253 /15:468 /16:7416 /17:1675 /18:2967
/19:8385 /20:8382 /21:6006 /22:8970 /23:10637 /24:69751
/25:158 /26:179 /27:48 /28:25 /29:13 /30:22
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 575 919 Supernet, Inc.
18566 570 576 Covad Communications
7018 467 1334 AT&T
702 466 759 UUNET - Commercial IP service
701 433 1566 UUNET Technologies, Inc.
690 431 482 Merit Network
7843 422 659 Adelphia Corp.
7066 382 485 Virginia Polytechnic Institut
6198 363 464 BellSouth Network Solutions,
6197 360 483 BellSouth Network Solutions,
1239 358 964 Sprint
20115 330 467 Charter Communications
2386 328 545 AT&T Data Communications Serv
3320 290 347 Deutsche Telekom AG
4814 280 294 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 253 729 GENUITY
22927 236 298 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:694 13:1 15:4 17:3 20:8 24:803
25:1 32:87 38:121 40:18 44:2 55:1
57:16 61:444 62:605 63:1869 64:1646 65:1919
66:2414 67:168 68:367 69:121 80:360 81:155
128:149 129:181 130:45 131:80 132:11 133:1
134:148 135:4 136:113 137:107 138:108 139:65
140:139 141:111 142:97 143:44 144:99 145:17
146:269 147:95 148:289 149:72 150:44 151:78
152:244 153:57 154:2 155:111 156:46 157:42
158:127 159:147 160:37 161:73 162:143 163:76
164:306 165:142 166:95 167:331 168:408 169:62
170:308 171:7 192:5347 193:2418 194:1967 195:1038
196:460 198:3567 199:3751 200:2959 202:3805 203:5164
204:3046 205:2059 206:2363 207:2404 208:2618 209:2871
210:781 211:327 212:954 213:794 214:21 215:21
216:3232 217:621 218:90 219:22 220:94
End of report
