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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 08 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123674
Prefixes after maximum aggregation: 78377
Unique aggregates announced to Internet: 59058
Total ASes present in the Internet Routing Table: 14950
Origin-only ASes present in the Internet Routing Table: 12965
Origin ASes announcing only one prefix: 5875
Transit ASes present in the Internet Routing Table: 1985
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.7
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: 22
Number of addresses announced to Internet: 1222933088
Equivalent to 72 /8s, 228 /16s and 122 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.5
Percentage of available address space allocated: 55.5
Total number of prefixes smaller than registry allocations: 58282
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20607
Total APNIC prefixes after maximum aggregation: 12245
Prefixes being announced from the APNIC address blocks: 19074
Unique aggregates announced from the APNIC address blocks: 11805
APNIC Region origin ASes present in the Internet Routing Table: 1765
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 285
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109298688
Equivalent to 6 /8s, 131 /16s and 196 /24s
Percentage of available APNIC address space announced: 64.7
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: 76472
Total ARIN prefixes after maximum aggregation: 48180
Prefixes being announced from the ARIN address blocks: 54713
Unique aggregates announced from the ARIN address blocks: 16687
ARIN Region origin ASes present in the Internet Routing Table: 8291
ARIN Region origin ASes announcing only one prefix: 2815
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: 190162496
Equivalent to 11 /8s, 85 /16s and 166 /24s
Percentage of available ARIN address space announced: 70.8
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: 21328
Total RIPE prefixes after maximum aggregation: 15723
Prefixes being announced from the RIPE address blocks: 17831
Unique aggregates announced from the RIPE address blocks: 11933
RIPE Region origin ASes present in the Internet Routing Table: 4493
RIPE Region origin ASes announcing only one prefix: 2455
RIPE Region transit ASes present in the Internet Routing Table: 811
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 128736512
Equivalent to 7 /8s, 172 /16s and 93 /24s
Percentage of available RIPE address space announced: 76.7
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: 5265
Total LACNIC prefixes after maximum aggregation: 2229
Prefixes being announced from the LACNIC address blocks: 4656
Unique aggregates announced from the LACNIC address blocks: 2950
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12419584
Equivalent to 0 /8s, 189 /16s and 130 /24s
Percentage of available LACNIC address space announced: 37.0
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 1108 1105 801 Telstra Pty Ltd
703 401 368 315 UUNET
2907 379 1974 358 SINET Japan
17557 377 28 141 Pakistan Telecom
2764 320 340 288 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 270 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
4134 245 2115 128 Data Communications Bureau
17676 238 3670 25 XTAGE CORPORATION
4755 226 135 71 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 212 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 177 232 51 CHINA UNICOM
9238 135 8 18 TATA ISP
4716 128 731 122 TTnet
4739 128 57 117 Commerical Internet eXchange
9498 127 9 10 BHARTI BT INTERNET LTD.
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1584 8889 1119 UUNET Technologies, Inc.
7018 1354 7170 938 AT&T
3908 986 1572 476 Supernet, Inc.
1239 969 3121 683 Sprint
1 783 2846 493 GENUITY
7132 727 6084 408 Southwestern Bell Internet Se
189 706 341 291 Genuity
7843 638 401 164 Adelphia Corp.
4151 635 691 58 USDA
3561 587 2351 338 Cable & Wireless USA
4323 564 498 164 Time Warner Communications, I
852 548 1107 433 Telus Advanced Communications
18566 536 125 9 Covad Communications
209 531 2095 339 Qwest
2386 506 481 273 AT&T Data Communications Serv
690 502 73 318 Merit Network
705 488 229 216 UUNET Technologies, Inc.
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 457 226 178 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 781 2205 648 UUNET - Commercial IP service
3215 315 851 174 France Telecom Transpac
3301 310 1174 300 TeliaNet Sweden
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 328 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5400 195 93 109 BT Ignite European Backbone
5515 195 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8220 169 282 158 COLT Internet - International
20858 158 17 3 This AS will be used to conne
8708 154 44 151 Romania Data Systems S.A.
3303 144 517 143 Swisscom Ltd
12302 124 18 31 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 113 755 63 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 295 99 106 ImpSat
7303 242 36 61 Telecom Argentina Stet-France
8151 215 333 117 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 155 207 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 110 3 38 Red Universitaria Nacional
11992 84 8 35 Integrated Systems
6147 78 62 20 Telefonica Del Peru
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
8065 71 6 18 Empresas Publicas de Medellin
4270 69 18 10 Red de Interconexion Universi
7927 65 5 40 Global One Venezuela
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7984 61 11 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 635 577 USDA
18566 536 527 Covad Communications
3908 986 510 Supernet, Inc.
7843 638 474 Adelphia Corp.
7018 1354 416 AT&T
189 706 415 Genuity
4323 564 400 Time Warner Communications, I
7132 727 319 Southwestern Bell Internet Se
1221 1108 307 Telstra Pty Ltd
1 783 290 GENUITY
6347 371 288 SAVVIS Communications Corpora
1239 969 286 Sprint
6197 476 280 BellSouth Network Solutions,
6198 457 279 BellSouth Network Solutions,
4355 379 277 EarthLink, Inc.
705 488 272 UUNET Technologies, Inc.
22927 286 272 TELEFONICA DE ARGENTINA
4814 270 255 China Telecom (Group)
3561 587 249 Cable & Wireless USA
27364 266 248 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
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
192.75.199.0/24 25745 Alentus Corporation
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 /9:5 /10:8 /11:13 /12:47
/13:92 /14:249 /15:462 /16:7382 /17:1645 /18:2958
/19:8285 /20:8219 /21:5916 /22:8829 /23:10618 /24:68356
/25:171 /26:186 /27:54 /28:35 /29:21 /30:59
/31:0 /32:46
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 622 986 Supernet, Inc.
18566 531 536 Covad Communications
702 485 781 UUNET - Commercial IP service
701 471 1584 UUNET Technologies, Inc.
7018 468 1354 AT&T
690 451 502 Merit Network
7843 385 638 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 371 969 Sprint
6198 361 457 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 302 506 AT&T Data Communications Serv
20115 299 426 Charter Communications
1 285 783 GENUITY
22927 285 286 TELEFONICA DE ARGENTINA
6140 282 295 ImpSat
27364 259 266 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:671 13:1 15:4 17:2 20:9
24:794 25:1 32:86 38:64 40:18 44:2
55:1 57:16 61:406 62:502 63:1887 64:1531
65:1909 66:2329 67:177 68:325 69:73 80:327
81:118 128:150 129:176 130:45 131:82 132:11
133:2 134:147 135:4 136:113 137:111 138:105
139:66 140:146 141:88 142:94 143:47 144:113
145:16 146:268 147:90 148:277 149:72 150:42
151:66 152:250 153:53 154:2 155:107 156:46
157:44 158:125 159:141 160:34 161:60 162:123
163:79 164:310 165:134 166:75 167:325 168:397
169:56 170:317 171:7 192:5357 193:2417 194:1992
195:998 196:471 198:3560 199:3325 200:2889 202:3649
203:5048 204:3066 205:2016 206:2426 207:2405 208:2661
209:2877 210:743 211:336 212:974 213:765 214:20
215:21 216:3295 217:621 218:83 219:12 220:58
End of report
