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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 16 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124178
Prefixes after maximum aggregation: 78046
Unique aggregates announced to Internet: 58836
Total ASes present in the Internet Routing Table: 15007
Origin-only ASes present in the Internet Routing Table: 13012
Origin ASes announcing only one prefix: 5905
Transit ASes present in the Internet Routing Table: 1995
Transit-only ASes present in the Internet Routing Table: 74
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: 1223998208
Equivalent to 72 /8s, 244 /16s and 187 /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: 58535
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20749
Total APNIC prefixes after maximum aggregation: 12188
Prefixes being announced from the APNIC address blocks: 19235
Unique aggregates announced from the APNIC address blocks: 11840
APNIC Region origin ASes present in the Internet Routing Table: 1769
APNIC Region origin ASes announcing only one prefix: 518
APNIC Region transit ASes present in the Internet Routing Table: 293
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109979104
Equivalent to 6 /8s, 142 /16s and 37 /24s
Percentage of available APNIC address space announced: 59.3
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: 76773
Total ARIN prefixes after maximum aggregation: 47901
Prefixes being announced from the ARIN address blocks: 55007
Unique aggregates announced from the ARIN address blocks: 16339
ARIN Region origin ASes present in the Internet Routing Table: 8316
ARIN Region origin ASes announcing only one prefix: 2839
ARIN Region transit ASes present in the Internet Routing Table: 789
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190507008
Equivalent to 11 /8s, 90 /16s and 232 /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: 21361
Total RIPE prefixes after maximum aggregation: 15733
Prefixes being announced from the RIPE address blocks: 17903
Unique aggregates announced from the RIPE address blocks: 11997
RIPE Region origin ASes present in the Internet Routing Table: 4514
RIPE Region origin ASes announcing only one prefix: 2460
RIPE Region transit ASes present in the Internet Routing Table: 813
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129027840
Equivalent to 7 /8s, 176 /16s and 207 /24s
Percentage of available RIPE address space announced: 76.9
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: 5293
Total LACNIC prefixes after maximum aggregation: 2224
Prefixes being announced from the LACNIC address blocks: 4686
Unique aggregates announced from the LACNIC address blocks: 2973
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: 70
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12452096
Equivalent to 0 /8s, 190 /16s and 1 /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 1096 1104 787 Telstra Pty Ltd
703 398 382 312 UUNET
2907 379 1974 358 SINET Japan
17557 377 28 142 Pakistan Telecom
2764 323 341 291 connect.com.au pty ltd
7474 272 276 208 Optus Communications Pty Ltd
4814 270 79 15 China Telecom (Group)
3786 243 773 210 DACOM Corporation
17676 241 3718 22 XTAGE CORPORATION
4755 238 136 76 Videsh Sanchar Nigam Ltd. Aut
4134 235 2007 123 Data Communications Bureau
9583 220 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 1592 8957 1116 UUNET Technologies, Inc.
7018 1361 7157 942 AT&T
1239 973 3105 686 Sprint
3908 933 1571 475 Supernet, Inc.
7132 866 6362 192 Southwestern Bell Internet Se
1 755 2772 482 GENUITY
4151 743 691 60 USDA
189 705 341 290 Genuity
7843 668 401 177 Adelphia Corp.
4323 570 513 165 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
209 535 2138 301 Qwest
705 516 263 232 UUNET Technologies, Inc.
3561 513 2343 336 Cable & Wireless USA
2386 508 482 265 AT&T Data Communications Serv
690 496 73 314 Merit Network
7066 483 204 255 Virginia Polytechnic Institut
6197 475 338 196 BellSouth Network Solutions,
6198 455 226 174 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 778 2202 645 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 308 1173 298 TeliaNet Sweden
3320 263 2004 224 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 199 98 112 BT Ignite European Backbone
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8220 170 298 160 COLT Internet - International
20858 163 17 3 This AS will be used to conne
8708 156 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 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 294 99 105 ImpSat
7303 243 36 62 Telecom Argentina Stet-France
8151 217 334 119 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 89 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
4151 743 683 USDA
7132 866 674 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 668 491 Adelphia Corp.
3908 933 458 Supernet, Inc.
7018 1361 419 AT&T
189 705 415 Genuity
4323 570 405 Time Warner Communications, I
1221 1096 309 Telstra Pty Ltd
1239 973 287 Sprint
6347 367 286 SAVVIS Communications Corpora
705 516 284 UUNET Technologies, Inc.
22927 296 282 TELEFONICA DE ARGENTINA
6198 455 281 BellSouth Network Solutions,
6197 475 279 BellSouth Network Solutions,
1 755 273 GENUITY
4355 373 272 EarthLink, Inc.
4814 270 255 China Telecom (Group)
27364 264 246 Armstrong Cable Services
2386 508 243 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 /16:7380 /17:1644 /18:2955
/19:8319 /20:8240 /21:5948 /22:8860 /23:10639 /24:68799
/25:157 /26:195 /27:53 /28:25 /29:12 /30:24
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 592 933 Supernet, Inc.
18566 535 541 Covad Communications
702 484 778 UUNET - Commercial IP service
7018 475 1361 AT&T
701 474 1592 UUNET Technologies, Inc.
690 445 496 Merit Network
7843 414 668 Adelphia Corp.
7066 382 483 Virginia Polytechnic Institut
1239 372 973 Sprint
6198 359 455 BellSouth Network Solutions,
6197 354 475 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 305 508 AT&T Data Communications Serv
20115 295 421 Charter Communications
22927 295 296 TELEFONICA DE ARGENTINA
6140 281 294 ImpSat
1 267 755 GENUITY
27364 257 264 Armstrong Cable Services
7303 242 243 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:676 13:1 15:4 17:3 20:9 24:803
25:1 32:86 38:64 40:18 44:2 55:1
57:16 61:428 62:522 63:1884 64:1555 65:1929
66:2373 67:163 68:360 69:104 80:332 81:120
128:150 129:179 130:45 131:83 132:11 133:2
134:154 135:4 136:109 137:111 138:103 139:66
140:118 141:91 142:95 143:45 144:114 145:16
146:269 147:93 148:279 149:70 150:46 151:68
152:247 153:57 154:2 155:106 156:46 157:46
158:123 159:141 160:37 161:75 162:139 163:76
164:310 165:140 166:74 167:328 168:406 169:56
170:315 171:7 192:5347 193:2418 194:1997 195:986
196:463 198:3555 199:3429 200:2911 202:3718 203:5064
204:3079 205:2009 206:2413 207:2415 208:2646 209:2854
210:760 211:339 212:992 213:774 214:20 215:21
216:3300 217:629 218:85 219:12 220:57
End of report
