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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 03 Sep, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127721
Prefixes after maximum aggregation: 80007
Unique aggregates announced to Internet: 61382
Total ASes present in the Internet Routing Table: 15757
Origin-only ASes present in the Internet Routing Table: 13664
Origin ASes announcing only one prefix: 6218
Transit ASes present in the Internet Routing Table: 2093
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 26
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: 16
Number of addresses announced to Internet: 1241142304
Equivalent to 73 /8s, 250 /16s and 84 /24s
Percentage of available address space announced: 33.5
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56681
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22300
Total APNIC prefixes after maximum aggregation: 12692
Prefixes being announced from the APNIC address blocks: 20713
Unique aggregates announced from the APNIC address blocks: 12286
APNIC Region origin ASes present in the Internet Routing Table: 1889
APNIC Region origin ASes announcing only one prefix: 541
APNIC Region transit ASes present in the Internet Routing Table: 314
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 121210368
Equivalent to 7 /8s, 57 /16s and 134 /24s
Percentage of available APNIC address space announced: 65.3
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: 77665
Total ARIN prefixes after maximum aggregation: 48571
Prefixes being announced from the ARIN address blocks: 55356
Unique aggregates announced from the ARIN address blocks: 17256
ARIN Region origin ASes present in the Internet Routing Table: 8623
ARIN Region origin ASes announcing only one prefix: 2958
ARIN Region transit ASes present in the Internet Routing Table: 827
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 196303648
Equivalent to 11 /8s, 179 /16s and 91 /24s
Percentage of available ARIN address space announced: 73.1
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: 22373
Total RIPE prefixes after maximum aggregation: 16437
Prefixes being announced from the RIPE address blocks: 18987
Unique aggregates announced from the RIPE address blocks: 12795
RIPE Region origin ASes present in the Internet Routing Table: 4825
RIPE Region origin ASes announcing only one prefix: 2619
RIPE Region transit ASes present in the Internet Routing Table: 853
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 135573568
Equivalent to 8 /8s, 20 /16s and 176 /24s
Percentage of available RIPE address space announced: 73.5
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: 5382
Total LACNIC prefixes after maximum aggregation: 2307
Prefixes being announced from the LACNIC address blocks: 4830
Unique aggregates announced from the LACNIC address blocks: 3141
LACNIC Region origin ASes present in the Internet Routing Table: 347
LACNIC Region origin ASes announcing only one prefix: 100
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13114624
Equivalent to 0 /8s, 200 /16s and 29 /24s
Percentage of available LACNIC address space announced: 39.1
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 982 1125 696 Telstra Pty Ltd
4755 407 135 73 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 350 SINET Japan
703 339 372 268 UUNET
4134 333 2220 112 Data Communications Bureau
17557 304 26 135 Pakistan Telecom
2764 294 322 263 connect.com.au pty ltd
7474 266 307 207 Optus Communications Pty Ltd
17676 255 3926 19 XTAGE CORPORATION
9583 242 37 20 Satyam Infoway Ltd.,
3786 237 773 203 DACOM Corporation
4766 237 2461 170 Korea Internet Exchange for "
9800 201 331 57 CHINA UNICOM
9443 185 58 82 Primus Telecommunications
9498 177 16 31 BHARTI BT INTERNET LTD.
9929 172 157 35 China Netcom Corp.
4538 170 1538 21 China Education and Research
9942 156 69 100 COMindico Australia
17642 156 41 117 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1484 8769 1042 UUNET Technologies, Inc.
7018 1386 7136 982 AT&T
3908 924 1573 493 Supernet, Inc.
1239 894 3031 643 Sprint
189 673 451 333 Genuity
18566 673 160 8 Covad Communications
4323 626 551 179 Time Warner Communications, I
6197 571 387 248 BellSouth Network Solutions,
7843 544 420 182 Adelphia Corp.
852 516 1123 410 Telus Advanced Communications
209 510 2129 295 Qwest
6198 498 277 197 BellSouth Network Solutions,
7066 491 205 262 Virginia Polytechnic Institut
3356 476 10675 395 Level 3 Communications, LLC
1 464 1056 298 GENUITY
705 464 182 290 UUNET Technologies, Inc.
7132 413 6657 240 Southwestern Bell Internet Se
690 410 59 276 Merit Network
4355 392 340 111 EarthLink, Inc.
20115 389 175 240 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 726 2122 602 UUNET - Commercial IP service
3301 297 1168 283 TeliaNet Sweden
3320 268 1989 228 Deutsche Telekom AG
1257 248 375 190 SWIPnet Swedish IP Network
8220 246 431 235 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 192 307 122 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
5400 181 175 132 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
8708 158 111 154 Romania Data Systems S.A.
3303 143 540 140 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
3246 123 360 121 Song Networks
3269 116 819 63 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 828 31 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 320 103 112 ImpSat
7303 240 39 57 Telecom Argentina Stet-France
8151 229 350 118 UniNet S.A. de C.V.
11172 188 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 108 3 39 Red Universitaria Nacional
11992 87 8 36 Integrated Systems
6147 82 70 19 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
11830 78 8 33 Instituto Costarricense de El
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
1916 72 305 42 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 56 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 673 665 Covad Communications
4323 626 447 Time Warner Communications, I
3908 924 431 Supernet, Inc.
7018 1386 404 AT&T
7843 544 362 Adelphia Corp.
189 673 340 Genuity
4755 407 334 Videsh Sanchar Nigam Ltd. Aut
6197 571 323 BellSouth Network Solutions,
6198 498 301 BellSouth Network Solutions,
27364 317 294 Armstrong Cable Services
1221 982 286 Telstra Pty Ltd
4355 392 281 EarthLink, Inc.
6347 354 275 SAVVIS Communications Corpora
22909 291 273 Comcast Cable Corporation
1239 894 251 Sprint
226 286 244 Los Nettos
25844 241 239 Skadden, Arps, Slate, Meagher
376 353 238 Reseau Interordinateurs Scien
17676 255 236 XTAGE CORPORATION
22773 248 231 Cox Communications, Inc. Atla
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
189.186.184.0/24 4471 Michigan Internet Cooperative
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
192.153.136.0/21 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.228.80.0/24 30122 INTERNET SOFTWARE CONSORTIUM,
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:4 /10:6 /11:12 /12:55
/13:98 /14:263 /15:473 /16:7423 /17:1741 /18:3086
/19:8452 /20:8692 /21:6371 /22:9389 /23:10905 /24:70076
/25:169 /26:219 /27:150 /28:26 /29:13 /30:51
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 667 673 Covad Communications
189 588 673 Genuity
3908 584 924 Supernet, Inc.
7018 493 1386 AT&T
701 444 1484 UUNET Technologies, Inc.
702 441 726 UUNET - Commercial IP service
6197 436 571 BellSouth Network Solutions,
6198 388 498 BellSouth Network Solutions,
7066 387 491 Virginia Polytechnic Institut
690 371 410 Merit Network
27364 311 317 Armstrong Cable Services
1239 309 894 Sprint
10753 298 312 XCOM Technologies, INC.
7843 259 544 Adelphia Corp.
20115 253 389 Charter Communications
25844 241 241 Skadden, Arps, Slate, Meagher
4355 210 392 EarthLink, Inc.
3320 207 268 Deutsche Telekom AG
3356 207 476 Level 3 Communications, LLC
209 205 510 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:690 13:1 15:4 16:1 17:4
20:6 24:799 25:1 32:85 38:44 40:23
44:2 55:1 57:14 61:299 62:396 63:1859
64:1774 65:2013 66:2698 67:259 68:392 69:259
80:412 81:121 82:13 128:149 129:171 130:62
131:83 132:13 134:172 135:7 136:187 137:114
138:114 139:47 140:146 141:134 142:98 143:45
144:88 145:13 146:274 147:62 148:300 149:76
150:123 151:68 152:218 153:57 154:4 155:126
156:68 157:49 158:119 159:135 160:45 161:75
162:360 163:77 164:314 165:146 166:96 167:313
168:177 169:95 170:321 171:9 189:1 192:5387
193:2474 194:1970 195:1183 196:468 198:3620 199:2756
200:2979 202:3903 203:5252 204:3019 205:2040 206:2324
207:2545 208:2555 209:2713 210:901 211:302 212:965
213:934 214:16 215:22 216:3263 217:708 218:107
219:36 220:102 221:9
End of report
