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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 02 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125876
Prefixes after maximum aggregation: 78507
Unique aggregates announced to Internet: 59056
Total ASes present in the Internet Routing Table: 14911
Origin-only ASes present in the Internet Routing Table: 12930
Origin ASes announcing only one prefix: 5829
Transit ASes present in the Internet Routing Table: 1981
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1222228869
Equivalent to 72 /8s, 217 /16s and 187 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 60386
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20796
Total APNIC prefixes after maximum aggregation: 12286
Prefixes being announced from the APNIC address blocks: 19258
Unique aggregates announced from the APNIC address blocks: 11877
APNIC Region origin ASes present in the Internet Routing Table: 1760
APNIC Region origin ASes announcing only one prefix: 515
APNIC Region transit ASes present in the Internet Routing Table: 287
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109035008
Equivalent to 6 /8s, 127 /16s and 190 /24s
Percentage of available APNIC address space announced: 64.6
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 78474
Total ARIN prefixes after maximum aggregation: 48327
Prefixes being announced from the ARIN address blocks: 56339
Unique aggregates announced from the ARIN address blocks: 16662
ARIN Region origin ASes present in the Internet Routing Table: 8275
ARIN Region origin ASes announcing only one prefix: 2788
ARIN Region transit ASes present in the Internet Routing Table: 790
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 189908800
Equivalent to 11 /8s, 81 /16s and 199 /24s
Percentage of available ARIN address space announced: 70.7
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: 21362
Total RIPE prefixes after maximum aggregation: 15685
Prefixes being announced from the RIPE address blocks: 18135
Unique aggregates announced from the RIPE address blocks: 11889
RIPE Region origin ASes present in the Internet Routing Table: 4475
RIPE Region origin ASes announcing only one prefix: 2441
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128484608
Equivalent to 7 /8s, 168 /16s and 133 /24s
Percentage of available RIPE address space announced: 76.6
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: 5242
Total LACNIC prefixes after maximum aggregation: 2209
Prefixes being announced from the LACNIC address blocks: 4647
Unique aggregates announced from the LACNIC address blocks: 2955
LACNIC Region origin ASes present in the Internet Routing Table: 330
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: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12415232
Equivalent to 0 /8s, 189 /16s and 113 /24s
Percentage of available LACNIC address space announced: 74.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1103 1106 807 Telstra Pty Ltd
703 396 367 312 UUNET
2907 381 1976 360 SINET Japan
17557 370 27 143 Pakistan Telecom
2764 319 340 287 connect.com.au pty ltd
4134 315 2826 105 Data Communications Bureau
7474 307 276 208 Optus Communications Pty Ltd
4814 267 79 15 China Telecom (Group)
3786 253 776 214 DACOM Corporation
17676 237 3654 25 XTAGE CORPORATION
4755 229 135 74 Videsh Sanchar Nigam Ltd. Aut
9583 217 33 14 Satyam Infoway Ltd.,
4766 211 2074 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 226 48 CHINA UNICOM
9238 135 8 17 TATA ISP
4716 130 734 124 TTnet
4739 128 57 117 Commerical Internet eXchange
7539 128 167 122 TANet2, sponsored by NSC, TAI
9498 127 9 10 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3356 2019 6167 222 Level 3 Communications, LLC
701 1580 8903 1117 UUNET Technologies, Inc.
7018 1353 7141 941 AT&T
3908 1038 1588 479 Supernet, Inc.
1239 974 3138 688 Sprint
1 779 2846 497 GENUITY
189 706 341 291 Genuity
7132 700 6062 398 Southwestern Bell Internet Se
7843 641 403 174 Adelphia Corp.
4151 617 691 58 USDA
3561 588 2353 339 Cable & Wireless USA
4323 566 491 178 Time Warner Communications, I
852 550 1107 433 Telus Advanced Communications
209 532 2105 338 Qwest
18566 531 123 9 Covad Communications
705 527 192 261 UUNET Technologies, Inc.
2386 504 481 248 AT&T Data Communications Serv
690 502 73 318 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 787 2221 654 UUNET - Commercial IP service
3301 311 1174 301 TeliaNet Sweden
3215 309 851 175 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
5400 224 77 107 BT Ignite European Backbone
1257 216 328 190 SWIPnet Swedish IP Network
719 202 307 125 LANLINK autonomous system
5515 195 779 168 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
20858 155 17 3 This AS will be used to conne
8708 154 42 150 Romania Data Systems S.A.
3303 145 517 144 Swisscom Ltd
8220 136 215 128 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3246 110 384 107 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 106 ImpSat
7303 242 36 60 Telecom Argentina Stet-France
8151 215 349 116 UniNet S.A. de C.V.
11172 164 66 33 Servicios Alestra S.A de C.V
6503 154 191 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 89 8 37 Integrated Systems
6147 77 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 40 Global One Colombia
13999 60 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1038 559 Supernet, Inc.
4151 617 559 USDA
18566 531 522 Covad Communications
7843 641 467 Adelphia Corp.
701 1580 463 UUNET Technologies, Inc.
189 706 415 Genuity
7018 1353 412 AT&T
4323 566 388 Time Warner Communications, I
7132 700 302 Southwestern Bell Internet Se
1221 1103 296 Telstra Pty Ltd
6347 371 289 SAVVIS Communications Corpora
1239 974 286 Sprint
1 779 282 GENUITY
6197 476 280 BellSouth Network Solutions,
4355 380 278 EarthLink, Inc.
6198 452 277 BellSouth Network Solutions,
22927 286 272 TELEFONICA DE ARGENTINA
705 527 266 UUNET Technologies, Inc.
2386 504 256 AT&T Data Communications Serv
4814 267 252 China Telecom (Group)
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
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
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
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24 27321 INTERNET SOFTWARE CONSORTIUM,
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 /9:3 /10:8 /11:13 /12:47
/13:92 /14:247 /15:460 /16:7372 /17:1652 /18:2964
/19:8301 /20:8323 /21:6303 /22:9248 /23:10912 /24:68846
/25:341 /26:334 /27:109 /28:88 /29:59 /30:75
/31:4 /32:57
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3356 1790 2019 Level 3 Communications, LLC
3908 649 1038 Supernet, Inc.
189 627 706 Genuity
18566 526 531 Covad Communications
702 490 787 UUNET - Commercial IP service
701 466 1580 UUNET Technologies, Inc.
7018 466 1353 AT&T
690 451 502 Merit Network
7843 389 641 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 374 974 Sprint
6198 359 452 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 306 329 Interland Incorporated
2386 305 504 AT&T Data Communications Serv
20115 298 425 Charter Communications
22927 285 286 TELEFONICA DE ARGENTINA
6140 278 291 ImpSat
1 276 779 GENUITY
705 273 527 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:671 13:1 15:4 17:2 20:10
24:780 25:1 32:86 38:67 40:18 44:2
55:1 57:17 61:459 62:540 63:2098 64:1597
65:1922 66:2332 67:219 68:319 69:71 80:330
81:117 128:150 129:174 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:105
139:66 140:149 141:87 142:96 143:46 144:96
145:16 146:268 147:90 148:278 149:74 150:43
151:66 152:247 153:52 154:2 155:111 156:46
157:44 158:124 159:140 160:33 161:62 162:130
163:79 164:307 165:145 166:86 167:323 168:399
169:56 170:316 171:6 192:5346 193:2400 194:1977
195:1002 196:478 198:3562 199:3314 200:2881 202:3682
203:5050 204:3062 205:2016 206:2386 207:2403 208:2666
209:2958 210:743 211:331 212:1020 213:796 214:20
215:21 216:3264 217:618 218:83 219:11 220:54
End of report
