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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 06 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127410
Prefixes after maximum aggregation: 79718
Unique aggregates announced to Internet: 60223
Total ASes present in the Internet Routing Table: 15631
Origin-only ASes present in the Internet Routing Table: 13559
Origin ASes announcing only one prefix: 6145
Transit ASes present in the Internet Routing Table: 2072
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 20
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: 14
Number of addresses announced to Internet: 1238037120
Equivalent to 73 /8s, 202 /16s and 242 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56397
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22147
Total APNIC prefixes after maximum aggregation: 12696
Prefixes being announced from the APNIC address blocks: 20568
Unique aggregates announced from the APNIC address blocks: 12415
APNIC Region origin ASes present in the Internet Routing Table: 1872
APNIC Region origin ASes announcing only one prefix: 530
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 118878336
Equivalent to 7 /8s, 21 /16s and 240 /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 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 77623
Total ARIN prefixes after maximum aggregation: 48443
Prefixes being announced from the ARIN address blocks: 55434
Unique aggregates announced from the ARIN address blocks: 16466
ARIN Region origin ASes present in the Internet Routing Table: 8582
ARIN Region origin ASes announcing only one prefix: 2924
ARIN Region transit ASes present in the Internet Routing Table: 820
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196243968
Equivalent to 11 /8s, 178 /16s and 114 /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: 22276
Total RIPE prefixes after maximum aggregation: 16300
Prefixes being announced from the RIPE address blocks: 18874
Unique aggregates announced from the RIPE address blocks: 12646
RIPE Region origin ASes present in the Internet Routing Table: 4763
RIPE Region origin ASes announcing only one prefix: 2597
RIPE Region transit ASes present in the Internet Routing Table: 842
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134341952
Equivalent to 8 /8s, 1 /16s and 229 /24s
Percentage of available RIPE address space announced: 72.8
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: 5363
Total LACNIC prefixes after maximum aggregation: 2279
Prefixes being announced from the LACNIC address blocks: 4850
Unique aggregates announced from the LACNIC address blocks: 3131
LACNIC Region origin ASes present in the Internet Routing Table: 344
LACNIC Region origin ASes announcing only one prefix: 94
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12905472
Equivalent to 0 /8s, 196 /16s and 236 /24s
Percentage of available LACNIC address space announced: 38.5
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 1046 1038 738 Telstra Pty Ltd
4755 442 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 333 370 266 UUNET
17557 306 22 139 Pakistan Telecom
2764 297 323 268 connect.com.au pty ltd
7474 261 306 201 Optus Communications Pty Ltd
17676 251 3878 20 XTAGE CORPORATION
3786 239 777 205 DACOM Corporation
9583 239 37 20 Satyam Infoway Ltd.,
4134 232 2008 113 Data Communications Bureau
4766 226 2461 169 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 170 1538 21 China Education and Research
9929 168 153 33 China Netcom Corp.
9498 159 11 29 BHARTI BT INTERNET LTD.
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1488 8778 1049 UUNET Technologies, Inc.
7018 1368 7151 954 AT&T
1239 964 2984 664 Sprint
3908 906 1534 484 Supernet, Inc.
7132 854 6604 236 Southwestern Bell Internet Se
189 670 371 323 Genuity
18566 648 160 8 Covad Communications
4323 621 549 172 Time Warner Communications, I
7843 605 400 223 Adelphia Corp.
6197 559 440 199 BellSouth Network Solutions,
852 521 1124 413 Telus Advanced Communications
209 518 2177 299 Qwest
1 514 1196 336 GENUITY
6198 499 271 188 BellSouth Network Solutions,
7066 486 205 259 Virginia Polytechnic Institut
705 481 191 305 UUNET Technologies, Inc.
20115 472 196 283 Charter Communications
3356 441 10683 362 Level 3 Communications, LLC
690 423 62 284 Merit Network
4355 402 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 730 2107 610 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 289 1169 277 TeliaNet Sweden
3320 259 1987 221 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 229 309 185 SWIPnet Swedish IP Network
3215 214 752 121 France Telecom Transpac
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 166 156 118 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 142 540 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 376 120 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 44 SITA
5511 100 179 77 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 107 ImpSat
7303 241 39 58 Telecom Argentina Stet-France
8151 220 350 118 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 132 189 93 AVANTEL, S.A.
10620 123 8 34 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 32 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
11830 71 5 31 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 648 640 Covad Communications
7132 854 618 Southwestern Bell Internet Se
4323 621 449 Time Warner Communications, I
3908 906 422 Supernet, Inc.
7018 1368 414 AT&T
7843 605 382 Adelphia Corp.
4755 442 372 Videsh Sanchar Nigam Ltd. Aut
6197 559 360 BellSouth Network Solutions,
189 670 347 Genuity
11305 358 320 Interland Incorporated
6198 499 311 BellSouth Network Solutions,
1221 1046 308 Telstra Pty Ltd
1239 964 300 Sprint
27364 317 298 Armstrong Cable Services
4355 402 293 EarthLink, Inc.
6347 363 282 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 359 244 Reseau Interordinateurs Scien
17676 251 231 XTAGE CORPORATION
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 1880 Stupi, house man's p
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
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
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:5 /10:8 /11:13 /12:54
/13:98 /14:263 /15:474 /16:7418 /17:1744 /18:3059
/19:8651 /20:8694 /21:6329 /22:9323 /23:10817 /24:69808
/25:149 /26:254 /27:120 /28:27 /29:11 /30:47
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 642 648 Covad Communications
189 592 670 Genuity
3908 578 906 Supernet, Inc.
7018 482 1368 AT&T
702 445 730 UUNET - Commercial IP service
701 430 1488 UUNET Technologies, Inc.
6197 425 559 BellSouth Network Solutions,
6198 390 499 BellSouth Network Solutions,
690 383 423 Merit Network
7066 383 486 Virginia Polytechnic Institut
1239 367 964 Sprint
7843 333 605 Adelphia Corp.
20115 321 472 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 402 EarthLink, Inc.
1 210 514 GENUITY
209 209 518 Qwest
705 203 481 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:865 25:1 32:98 38:43 40:23
44:2 57:15 61:287 62:389 63:1882 64:1728
65:2005 66:2686 67:212 68:404 69:241 80:398
81:118 82:9 128:132 129:166 130:58 131:80
132:13 134:176 135:7 136:122 137:118 138:118
139:46 140:138 141:114 142:94 143:44 144:99
145:13 146:279 147:59 148:298 149:64 150:105
151:63 152:212 153:57 154:3 155:119 156:56
157:47 158:119 159:137 160:47 161:75 162:408
163:81 164:320 165:143 166:97 167:320 168:181
169:91 170:320 171:8 192:5325 193:2470 194:1983
195:1153 196:473 198:3574 199:2722 200:3005 202:3924
203:5295 204:2962 205:2029 206:2326 207:2424 208:2566
209:2860 210:879 211:291 212:1009 213:896 214:16
215:22 216:3268 217:686 218:96 219:70 220:97
221:10
End of report
