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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 13 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125524
Prefixes after maximum aggregation: 78411
Unique aggregates announced to Internet: 59256
Total ASes present in the Internet Routing Table: 15165
Origin-only ASes present in the Internet Routing Table: 13129
Origin ASes announcing only one prefix: 5977
Transit ASes present in the Internet Routing Table: 2036
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: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1229189120
Equivalent to 73 /8s, 67 /16s and 240 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54457
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21240
Total APNIC prefixes after maximum aggregation: 12345
Prefixes being announced from the APNIC address blocks: 19695
Unique aggregates announced from the APNIC address blocks: 12020
APNIC Region origin ASes present in the Internet Routing Table: 1797
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 113143776
Equivalent to 6 /8s, 190 /16s and 111 /24s
Percentage of available APNIC address space announced: 61.0
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: 77315
Total ARIN prefixes after maximum aggregation: 47964
Prefixes being announced from the ARIN address blocks: 55433
Unique aggregates announced from the ARIN address blocks: 16500
ARIN Region origin ASes present in the Internet Routing Table: 8387
ARIN Region origin ASes announcing only one prefix: 2878
ARIN Region transit ASes present in the Internet Routing Table: 808
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190960896
Equivalent to 11 /8s, 97 /16s and 213 /24s
Percentage of available ARIN address space announced: 71.1
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, 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: 21620
Total RIPE prefixes after maximum aggregation: 15862
Prefixes being announced from the RIPE address blocks: 18120
Unique aggregates announced from the RIPE address blocks: 12070
RIPE Region origin ASes present in the Internet Routing Table: 4575
RIPE Region origin ASes announcing only one prefix: 2492
RIPE Region transit ASes present in the Internet Routing Table: 821
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 130290048
Equivalent to 7 /8s, 196 /16s and 17 /24s
Percentage of available RIPE address space announced: 70.6
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: 5348
Total LACNIC prefixes after maximum aggregation: 2240
Prefixes being announced from the LACNIC address blocks: 4762
Unique aggregates announced from the LACNIC address blocks: 3023
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 86
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12564224
Equivalent to 0 /8s, 191 /16s and 183 /24s
Percentage of available LACNIC address space announced: 37.4
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 1080 1103 769 Telstra Pty Ltd
4755 412 133 71 Videsh Sanchar Nigam Ltd. Aut
2907 388 1993 365 SINET Japan
703 377 382 301 UUNET
17557 369 26 145 Pakistan Telecom
2764 314 341 280 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 270 291 206 Optus Communications Pty Ltd
17676 247 3814 19 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 226 2038 116 Data Communications Bureau
9583 222 34 16 Satyam Infoway Ltd.,
4766 214 2475 160 Korea Internet Exchange for "
9443 184 58 83 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
9238 138 8 17 TATA ISP
4739 136 57 125 Commerical Internet eXchange
9498 133 9 19 BHARTI BT INTERNET LTD.
4716 128 729 122 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1567 8937 1105 UUNET Technologies, Inc.
7018 1324 7151 918 AT&T
4151 1113 691 60 USDA
7132 964 6476 208 Southwestern Bell Internet Se
1239 935 3010 657 Sprint
3908 922 1572 476 Supernet, Inc.
189 704 341 287 Genuity
1 681 2698 465 GENUITY
7843 662 346 174 Adelphia Corp.
4323 588 514 169 Time Warner Communications, I
18566 576 160 8 Covad Communications
2386 571 484 265 AT&T Data Communications Serv
852 550 1156 431 Telus Advanced Communications
705 532 286 236 UUNET Technologies, Inc.
3561 506 2339 328 Cable & Wireless USA
209 491 2105 296 Qwest
7066 486 204 260 Virginia Polytechnic Institut
6197 484 341 194 BellSouth Network Solutions,
690 481 69 314 Merit Network
20115 473 194 287 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 757 2173 638 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 307 1157 297 TeliaNet Sweden
3215 303 852 174 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
5400 202 112 113 BT Ignite European Backbone
8220 201 366 190 COLT Internet - International
719 193 307 125 LANLINK autonomous system
5515 189 795 153 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 157 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 123 1299 113 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 112 383 109 Song Networks
3352 107 748 30 Ibernet, Internet Access Netw
2874 97 85 38 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 105 ImpSat
7303 255 36 64 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 166 66 36 Servicios Alestra S.A de C.V
6503 139 205 99 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 103 3 32 Red Universitaria Nacional
6147 91 62 20 Telefonica Del Peru
11992 87 8 36 Integrated Systems
4270 75 18 10 Red de Interconexion Universi
8065 74 8 16 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
6535 73 5 22 Chilesat Servicios Empresari
15311 71 12 35 Telefonica Empresas
7738 66 186 12 Telecomunicacoes da Bahia S.A
11830 66 4 27 Instituto Costarricense de El
7927 65 5 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1113 1053 USDA
7132 964 756 Southwestern Bell Internet Se
18566 576 568 Covad Communications
7843 662 488 Adelphia Corp.
3908 922 446 Supernet, Inc.
4323 588 419 Time Warner Communications, I
189 704 417 Genuity
7018 1324 406 AT&T
4755 412 341 Videsh Sanchar Nigam Ltd. Aut
1221 1080 311 Telstra Pty Ltd
2386 571 306 AT&T Data Communications Serv
705 532 296 UUNET Technologies, Inc.
6197 484 290 BellSouth Network Solutions,
4355 393 289 EarthLink, Inc.
6347 368 289 SAVVIS Communications Corpora
6198 464 288 BellSouth Network Solutions,
1239 935 278 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 278 259 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
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
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
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 /12:51
/13:93 /14:253 /15:467 /16:7417 /17:1678 /18:2971
/19:8426 /20:8391 /21:6015 /22:8979 /23:10634 /24:69620
/25:160 /26:186 /27:52 /28:25 /29:13 /30:23
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 704 Genuity
3908 578 922 Supernet, Inc.
18566 570 576 Covad Communications
702 465 757 UUNET - Commercial IP service
7018 464 1324 AT&T
701 434 1567 UUNET Technologies, Inc.
690 431 481 Merit Network
7843 426 662 Adelphia Corp.
7066 383 486 Virginia Polytechnic Institut
6198 363 464 BellSouth Network Solutions,
6197 360 484 BellSouth Network Solutions,
1239 353 935 Sprint
2386 353 571 AT&T Data Communications Serv
20115 334 473 Charter Communications
3320 289 346 Deutsche Telekom AG
4814 281 295 China Telecom (Group)
27364 271 278 Armstrong Cable Services
1 252 681 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:696 13:1 15:4 16:1 17:3 20:8
24:810 25:1 32:87 38:120 40:19 44:2
55:1 57:16 61:443 62:575 63:1862 64:1648
65:1918 66:2420 67:170 68:374 69:126 80:344
81:125 128:146 129:175 130:45 131:80 132:11
133:1 134:146 135:3 136:114 137:108 138:108
139:65 140:134 141:109 142:98 143:44 144:101
145:17 146:269 147:95 148:289 149:71 150:44
151:76 152:244 153:57 154:2 155:112 156:46
157:42 158:127 159:147 160:37 161:73 162:141
163:77 164:306 165:140 166:95 167:334 168:398
169:62 170:306 171:7 192:5303 193:2426 194:1979
195:1045 196:460 198:3561 199:3779 200:2961 202:3769
203:5169 204:3016 205:2060 206:2374 207:2388 208:2621
209:2865 210:778 211:325 212:939 213:792 214:20
215:23 216:3266 217:617 218:90 219:23 220:95
End of report
