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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 18 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124151
Prefixes after maximum aggregation: 78061
Unique aggregates announced to Internet: 58861
Total ASes present in the Internet Routing Table: 15026
Origin-only ASes present in the Internet Routing Table: 13036
Origin ASes announcing only one prefix: 5919
Transit ASes present in the Internet Routing Table: 1990
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1224224640
Equivalent to 72 /8s, 248 /16s and 47 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 53859
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20748
Total APNIC prefixes after maximum aggregation: 12222
Prefixes being announced from the APNIC address blocks: 19177
Unique aggregates announced from the APNIC address blocks: 11860
APNIC Region origin ASes present in the Internet Routing Table: 1768
APNIC Region origin ASes announcing only one prefix: 516
APNIC Region transit ASes present in the Internet Routing Table: 294
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110202080
Equivalent to 6 /8s, 145 /16s and 140 /24s
Percentage of available APNIC address space announced: 59.4
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: 76732
Total ARIN prefixes after maximum aggregation: 47857
Prefixes being announced from the ARIN address blocks: 54969
Unique aggregates announced from the ARIN address blocks: 16370
ARIN Region origin ASes present in the Internet Routing Table: 8333
ARIN Region origin ASes announcing only one prefix: 2852
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190685696
Equivalent to 11 /8s, 93 /16s and 162 /24s
Percentage of available ARIN address space announced: 71.0
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: 21380
Total RIPE prefixes after maximum aggregation: 15752
Prefixes being announced from the RIPE address blocks: 17926
Unique aggregates announced from the RIPE address blocks: 12013
RIPE Region origin ASes present in the Internet Routing Table: 4520
RIPE Region origin ASes announcing only one prefix: 2463
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 129023616
Equivalent to 7 /8s, 176 /16s and 190 /24s
Percentage of available RIPE address space announced: 69.9
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: 5289
Total LACNIC prefixes after maximum aggregation: 2230
Prefixes being announced from the LACNIC address blocks: 4707
Unique aggregates announced from the LACNIC address blocks: 2990
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 88
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: 12435200
Equivalent to 0 /8s, 189 /16s and 191 /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 1103 1104 793 Telstra Pty Ltd
703 396 381 310 UUNET
2907 379 1974 358 SINET Japan
17557 373 27 139 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 273 79 15 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 242 3734 23 XTAGE CORPORATION
4755 232 136 76 Videsh Sanchar Nigam Ltd. Aut
4134 225 2006 114 Data Communications Bureau
9583 223 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1583 8972 1110 UUNET Technologies, Inc.
7018 1372 7176 946 AT&T
1239 967 3119 682 Sprint
7132 958 6444 210 Southwestern Bell Internet Se
3908 937 1571 477 Supernet, Inc.
4151 782 691 60 USDA
1 754 2770 481 GENUITY
189 705 341 290 Genuity
7843 684 402 178 Adelphia Corp.
4323 573 514 166 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 542 128 6 Covad Communications
705 528 277 233 UUNET Technologies, Inc.
2386 511 483 266 AT&T Data Communications Serv
3561 506 2341 333 Cable & Wireless USA
209 498 2138 302 Qwest
690 494 72 312 Merit Network
7066 483 204 255 Virginia Polytechnic Institut
6197 480 339 195 BellSouth Network Solutions,
6198 456 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 772 2186 642 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 198 364 187 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 126 18 33 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3233 106 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 294 99 105 ImpSat
7303 247 36 65 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 161 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
8065 76 6 15 Empresas Publicas de Medellin
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 68 18 10 Red de Interconexion Universi
11830 66 4 26 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
7132 958 748 Southwestern Bell Internet Se
4151 782 722 USDA
18566 542 536 Covad Communications
7843 684 506 Adelphia Corp.
3908 937 460 Supernet, Inc.
7018 1372 426 AT&T
189 705 415 Genuity
4323 573 407 Time Warner Communications, I
1221 1103 310 Telstra Pty Ltd
705 528 295 UUNET Technologies, Inc.
1239 967 285 Sprint
6197 480 285 BellSouth Network Solutions,
6347 363 284 SAVVIS Communications Corpora
22927 296 282 TELEFONICA DE ARGENTINA
6198 456 281 BellSouth Network Solutions,
4355 384 275 EarthLink, Inc.
1 754 273 GENUITY
4814 273 258 China Telecom (Group)
27364 269 251 Armstrong Cable Services
2386 511 245 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
1877 UNALLOCATED 192.108.201.0/24 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
192.16.52.0/24 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 /14:251 /15:464 /16:7383 /17:1645 /18:2958
/19:8328 /20:8264 /21:5945 /22:8849 /23:10560 /24:68821
/25:162 /26:194 /27:52 /28:24 /29:13 /30:24
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 593 937 Supernet, Inc.
18566 536 542 Covad Communications
7018 483 1372 AT&T
702 479 772 UUNET - Commercial IP service
690 443 494 Merit Network
701 435 1583 UUNET Technologies, Inc.
7843 429 684 Adelphia Corp.
7066 382 483 Virginia Polytechnic Institut
1239 364 967 Sprint
6198 359 456 BellSouth Network Solutions,
6197 358 480 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 308 511 AT&T Data Communications Serv
20115 295 426 Charter Communications
1 266 754 GENUITY
4814 263 273 China Telecom (Group)
27364 262 269 Armstrong Cable Services
3215 235 312 France Telecom Transpac
22927 235 296 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:675 13:1 15:4 17:3 20:9 24:820
25:1 32:86 38:64 40:19 44:2 55:1
57:16 61:410 62:523 63:1888 64:1529 65:1929
66:2368 67:164 68:358 69:109 80:334 81:121
128:150 129:177 130:45 131:82 132:10 133:2
134:153 135:4 136:112 137:111 138:108 139:66
140:148 141:92 142:95 143:45 144:109 145:14
146:270 147:93 148:275 149:71 150:44 151:68
152:246 153:57 154:2 155:106 156:45 157:39
158:123 159:143 160:37 161:75 162:137 163:78
164:311 165:140 166:75 167:328 168:406 169:57
170:314 171:7 192:5352 193:2425 194:1997 195:986
196:460 198:3562 199:3473 200:2934 202:3686 203:5067
204:3075 205:2001 206:2408 207:2410 208:2654 209:2823
210:752 211:339 212:986 213:784 214:21 215:21
216:3321 217:626 218:85 219:12 220:57
End of report
