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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 23 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124794
Prefixes after maximum aggregation: 78267
Unique aggregates announced to Internet: 58918
Total ASes present in the Internet Routing Table: 15043
Origin-only ASes present in the Internet Routing Table: 13045
Origin ASes announcing only one prefix: 5914
Transit ASes present in the Internet Routing Table: 1998
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: 20
Number of addresses announced to Internet: 1225089536
Equivalent to 73 /8s, 5 /16s and 98 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54138
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21034
Total APNIC prefixes after maximum aggregation: 12272
Prefixes being announced from the APNIC address blocks: 19468
Unique aggregates announced from the APNIC address blocks: 11936
APNIC Region origin ASes present in the Internet Routing Table: 1776
APNIC Region origin ASes announcing only one prefix: 518
APNIC Region transit ASes present in the Internet Routing Table: 294
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110468320
Equivalent to 6 /8s, 149 /16s and 156 /24s
Percentage of available APNIC address space announced: 59.5
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: 77080
Total ARIN prefixes after maximum aggregation: 48002
Prefixes being announced from the ARIN address blocks: 55185
Unique aggregates announced from the ARIN address blocks: 16412
ARIN Region origin ASes present in the Internet Routing Table: 8338
ARIN Region origin ASes announcing only one prefix: 2851
ARIN Region transit ASes present in the Internet Routing Table: 793
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191002112
Equivalent to 11 /8s, 98 /16s and 118 /24s
Percentage of available ARIN address space announced: 71.2
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: 21372
Total RIPE prefixes after maximum aggregation: 15760
Prefixes being announced from the RIPE address blocks: 17924
Unique aggregates announced from the RIPE address blocks: 12021
RIPE Region origin ASes present in the Internet Routing Table: 4522
RIPE Region origin ASes announcing only one prefix: 2456
RIPE Region transit ASes present in the Internet Routing Table: 812
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129250176
Equivalent to 7 /8s, 180 /16s and 51 /24s
Percentage of available RIPE address space announced: 70.0
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: 5307
Total LACNIC prefixes after maximum aggregation: 2233
Prefixes being announced from the LACNIC address blocks: 4729
Unique aggregates announced from the LACNIC address blocks: 2921
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 89
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12441088
Equivalent to 0 /8s, 189 /16s and 214 /24s
Percentage of available LACNIC address space announced: 37.1
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 1101 1104 791 Telstra Pty Ltd
4755 403 136 76 Videsh Sanchar Nigam Ltd. Aut
703 397 381 311 UUNET
2907 385 1976 362 SINET Japan
17557 373 27 137 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 276 81 17 China Telecom (Group)
7474 271 276 207 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 243 3750 22 XTAGE CORPORATION
4134 225 2018 116 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 248 54 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 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 1587 8924 1108 UUNET Technologies, Inc.
7018 1353 7174 932 AT&T
1239 967 3118 686 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 939 1571 479 Supernet, Inc.
4151 858 691 60 USDA
1 737 2753 470 GENUITY
7843 721 403 180 Adelphia Corp.
189 705 341 290 Genuity
4323 573 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 543 144 5 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 514 482 276 AT&T Data Communications Serv
3561 510 2341 334 Cable & Wireless USA
690 494 72 312 Merit Network
209 491 2120 297 Qwest
7066 485 204 255 Virginia Polytechnic Institut
6197 481 340 196 BellSouth Network Solutions,
6198 458 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 774 2186 644 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 307 1173 297 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 199 97 110 BT Ignite European Backbone
8220 199 364 188 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 157 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 107 750 31 Ibernet, Internet Access Netw
2874 95 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 250 36 67 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
1916 75 306 45 Fundacao de Amparo a Pesquisa
8065 75 6 15 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
6535 73 5 22 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
11830 65 4 25 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 858 798 USDA
7132 959 750 Southwestern Bell Internet Se
7843 721 541 Adelphia Corp.
18566 543 538 Covad Communications
3908 939 460 Supernet, Inc.
7018 1353 421 AT&T
189 705 415 Genuity
4323 573 404 Time Warner Communications, I
4755 403 327 Videsh Sanchar Nigam Ltd. Aut
1221 1101 310 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 367 288 SAVVIS Communications Corpora
6197 481 285 BellSouth Network Solutions,
22927 297 284 TELEFONICA DE ARGENTINA
6198 458 283 BellSouth Network Solutions,
1239 967 281 Sprint
4355 384 275 EarthLink, Inc.
1 737 267 GENUITY
4814 276 259 China Telecom (Group)
27364 270 252 Armstrong Cable Services
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
1877 UNALLOCATED 192.108.201.0/24 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
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 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 /9:4 /10:8 /11:13 /12:50
/13:93 /14:253 /15:462 /16:7387 /17:1670 /18:2974
/19:8359 /20:8329 /21:5982 /22:8890 /23:10584 /24:69220
/25:164 /26:193 /27:54 /28:25 /29:13 /30:24
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 595 939 Supernet, Inc.
18566 536 543 Covad Communications
702 481 774 UUNET - Commercial IP service
7018 479 1353 AT&T
7843 465 721 Adelphia Corp.
690 443 494 Merit Network
701 441 1587 UUNET Technologies, Inc.
7066 384 485 Virginia Polytechnic Institut
1239 361 967 Sprint
6198 361 458 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
11305 311 334 Interland Incorporated
2386 308 514 AT&T Data Communications Serv
20115 297 430 Charter Communications
4814 265 276 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 257 737 GENUITY
3215 235 312 France Telecom Transpac
22927 235 297 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:677 13:1 15:4 17:3 20:8 24:832
25:1 32:85 38:67 40:18 44:2 55:1
57:16 61:430 62:525 63:1898 64:1537 65:1926
66:2382 67:166 68:373 69:114 80:340 81:120
128:155 129:178 130:45 131:82 132:11 133:2
134:153 135:4 136:112 137:109 138:108 139:66
140:147 141:93 142:95 143:45 144:114 145:15
146:267 147:93 148:278 149:72 150:43 151:68
152:246 153:57 154:2 155:107 156:45 157:40
158:125 159:143 160:37 161:75 162:137 163:80
164:311 165:138 166:84 167:329 168:406 169:57
170:316 171:7 192:5344 193:2414 194:1994 195:966
196:465 198:3555 199:3547 200:2944 202:3747 203:5158
204:3085 205:2003 206:2403 207:2408 208:2655 209:2834
210:766 211:340 212:985 213:792 214:21 215:21
216:3362 217:621 218:89 219:20 220:58
End of report
