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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 27 Mar, 2003
Analysis Summary
----------------
BGP routing table entries examined: 122873
Prefixes after maximum aggregation: 78026
Unique aggregates announced to Internet: 59133
Total ASes present in the Internet Routing Table: 14902
Origin-only ASes present in the Internet Routing Table: 12913
Origin ASes announcing only one prefix: 5847
Transit ASes present in the Internet Routing Table: 1989
Transit-only ASes present in the Internet Routing Table: 72
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1219404837
Equivalent to 72 /8s, 174 /16s and 164 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 57647
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20708
Total APNIC prefixes after maximum aggregation: 12270
Prefixes being announced from the APNIC address blocks: 19161
Unique aggregates announced from the APNIC address blocks: 11829
APNIC Region origin ASes present in the Internet Routing Table: 1759
APNIC Region origin ASes announcing only one prefix: 518
APNIC Region transit ASes present in the Internet Routing Table: 290
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 108188672
Equivalent to 6 /8s, 114 /16s and 212 /24s
Percentage of available APNIC address space announced: 64.1
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: 75567
Total ARIN prefixes after maximum aggregation: 47905
Prefixes being announced from the ARIN address blocks: 53801
Unique aggregates announced from the ARIN address blocks: 16814
ARIN Region origin ASes present in the Internet Routing Table: 8263
ARIN Region origin ASes announcing only one prefix: 2793
ARIN Region transit ASes present in the Internet Routing Table: 794
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 188173824
Equivalent to 11 /8s, 55 /16s and 78 /24s
Percentage of available ARIN address space announced: 70.1
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
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: 21355
Total RIPE prefixes after maximum aggregation: 15646
Prefixes being announced from the RIPE address blocks: 17878
Unique aggregates announced from the RIPE address blocks: 11856
RIPE Region origin ASes present in the Internet Routing Table: 4476
RIPE Region origin ASes announcing only one prefix: 2450
RIPE Region transit ASes present in the Internet Routing Table: 811
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 128531456
Equivalent to 7 /8s, 169 /16s and 60 /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: 5241
Total LACNIC prefixes after maximum aggregation: 2205
Prefixes being announced from the LACNIC address blocks: 4647
Unique aggregates announced from the LACNIC address blocks: 2948
LACNIC Region origin ASes present in the Internet Routing Table: 331
LACNIC Region origin ASes announcing only one prefix: 86
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: 15
Number of LACNIC addresses announced to Internet: 12403712
Equivalent to 0 /8s, 189 /16s and 68 /24s
Percentage of available LACNIC address space announced: 73.9
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 1104 1106 808 Telstra Pty Ltd
703 406 370 314 UUNET
2907 382 1974 361 SINET Japan
17557 376 28 139 Pakistan Telecom
2764 324 340 291 connect.com.au pty ltd
4134 311 2682 105 Data Communications Bureau
7474 307 276 208 Optus Communications Pty Ltd
4814 264 79 15 China Telecom (Group)
3786 251 772 212 DACOM Corporation
17676 236 3638 26 XTAGE CORPORATION
4755 228 135 74 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 206 2074 155 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 173 217 45 CHINA UNICOM
9238 135 8 17 TATA ISP
7539 130 166 123 TANet2, sponsored by NSC, TAI
4716 128 717 122 TTnet
4739 127 57 116 Commerical Internet eXchange
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1582 8828 1122 UUNET Technologies, Inc.
7018 1351 7143 941 AT&T
3908 1114 1588 483 Supernet, Inc.
1239 975 3137 692 Sprint
1 694 8073 427 GENUITY
7132 674 5939 475 Southwestern Bell Internet Se
7843 606 404 155 Adelphia Corp.
3561 591 2352 344 Cable & Wireless USA
4151 569 691 61 USDA
4323 560 490 173 Time Warner Communications, I
852 553 1107 435 Telus Advanced Communications
18566 542 122 12 Covad Communications
705 534 208 268 UUNET Technologies, Inc.
209 532 2105 339 Qwest
690 503 73 316 Merit Network
2386 499 481 247 AT&T Data Communications Serv
7066 489 204 254 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 447 221 174 BellSouth Network Solutions,
20115 418 173 274 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 783 2236 649 UUNET - Commercial IP service
3301 311 1174 301 TeliaNet Sweden
3215 310 835 174 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
5400 222 77 106 BT Ignite European Backbone
1257 217 328 191 SWIPnet Swedish IP Network
719 202 307 125 LANLINK autonomous system
5515 187 779 161 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 153 42 150 Romania Data Systems S.A.
20858 151 17 3 This AS will be used to conne
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 111 384 108 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 105 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 290 98 107 ImpSat
7303 242 36 56 Telecom Argentina Stet-France
8151 217 349 116 UniNet S.A. de C.V.
11172 165 66 33 Servicios Alestra S.A de C.V
6503 155 191 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
6147 76 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
11992 75 8 35 Integrated Systems
8065 73 6 18 Empresas Publicas de Medellin
6535 72 5 23 Chilesat Servicios Empresari
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
11830 64 4 25 Instituto Costarricense de El
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 1114 631 Supernet, Inc.
18566 542 530 Covad Communications
4151 569 508 USDA
7843 606 451 Adelphia Corp.
7018 1351 410 AT&T
4323 560 387 Time Warner Communications, I
1221 1104 296 Telstra Pty Ltd
6347 371 291 SAVVIS Communications Corpora
1239 975 283 Sprint
6197 476 280 BellSouth Network Solutions,
4355 390 278 EarthLink, Inc.
6198 447 273 BellSouth Network Solutions,
22927 286 272 TELEFONICA DE ARGENTINA
1 694 267 GENUITY
705 534 266 UUNET Technologies, Inc.
2386 499 252 AT&T Data Communications Serv
27364 270 252 Armstrong Cable Services
4814 264 249 China Telecom (Group)
3561 591 247 Cable & Wireless USA
17557 376 237 Pakistan Telecom
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,
192.172.0.0/19 568 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 /12:46
/13:89 /14:241 /15:453 /16:7362 /17:1633 /18:2927
/19:8255 /20:8238 /21:5861 /22:8856 /23:10653 /24:67335
/25:196 /26:196 /27:128 /28:123 /29:77 /30:90
/31:4 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 688 1114 Supernet, Inc.
18566 537 542 Covad Communications
702 486 783 UUNET - Commercial IP service
7018 463 1351 AT&T
701 460 1582 UUNET Technologies, Inc.
690 452 503 Merit Network
7066 388 489 Virginia Polytechnic Institut
1239 371 975 Sprint
6197 355 476 BellSouth Network Solutions,
6198 355 447 BellSouth Network Solutions,
7843 355 606 Adelphia Corp.
2386 299 499 AT&T Data Communications Serv
20115 291 418 Charter Communications
22927 285 286 TELEFONICA DE ARGENTINA
705 282 534 UUNET Technologies, Inc.
6140 277 290 ImpSat
27364 264 270 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
3215 234 310 France Telecom Transpac
209 225 532 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:666 13:1 15:4 17:2 20:10
24:776 25:1 32:93 34:1 38:63 40:18
44:2 55:1 57:16 61:456 62:509 63:1944
64:1470 65:1902 66:1594 67:213 68:300 69:68
80:338 81:107 128:149 129:201 130:45 131:83
132:11 133:11 134:145 135:4 136:113 137:111
138:106 139:67 140:147 141:85 142:97 143:47
144:101 145:16 146:266 147:90 148:275 149:74
150:42 151:66 152:248 153:52 154:2 155:110
156:46 157:44 158:123 159:139 160:33 161:61
162:127 163:81 164:298 165:145 166:74 167:322
168:400 169:51 170:316 171:6 192:5305 193:2390
194:1992 195:976 196:478 198:3584 199:3260 200:2882
202:3651 203:5050 204:3058 205:2020 206:2386 207:2406
208:2660 209:2803 210:735 211:328 212:980 213:778
214:20 215:22 216:3231 217:606 218:81 219:11
220:56
End of report
