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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 25 Sep, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128026
Prefixes after maximum aggregation: 80337
Unique aggregates announced to Internet: 61889
Total ASes present in the Internet Routing Table: 15866
Origin-only ASes present in the Internet Routing Table: 13764
Origin ASes announcing only one prefix: 6246
Transit ASes present in the Internet Routing Table: 2102
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 5.0
Max AS path length visible: 27
Illegal AS announcements present in the Routing Table: 5
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1226930212
Equivalent to 73 /8s, 33 /16s and 120 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56877
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22519
Total APNIC prefixes after maximum aggregation: 12743
Prefixes being announced from the APNIC address blocks: 20906
Unique aggregates announced from the APNIC address blocks: 12358
APNIC Region origin ASes present in the Internet Routing Table: 1896
APNIC Region origin ASes announcing only one prefix: 543
APNIC Region transit ASes present in the Internet Routing Table: 305
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 122236160
Equivalent to 7 /8s, 73 /16s and 45 /24s
Percentage of available APNIC address space announced: 65.9
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: 77543
Total ARIN prefixes after maximum aggregation: 48757
Prefixes being announced from the ARIN address blocks: 55360
Unique aggregates announced from the ARIN address blocks: 17574
ARIN Region origin ASes present in the Internet Routing Table: 8695
ARIN Region origin ASes announcing only one prefix: 2991
ARIN Region transit ASes present in the Internet Routing Table: 838
Average ARIN Region AS path length visible: 4.8
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 197437984
Equivalent to 11 /8s, 196 /16s and 170 /24s
Percentage of available ARIN address space announced: 73.6
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: 22532
Total RIPE prefixes after maximum aggregation: 16545
Prefixes being announced from the RIPE address blocks: 19047
Unique aggregates announced from the RIPE address blocks: 12851
RIPE Region origin ASes present in the Internet Routing Table: 4859
RIPE Region origin ASes announcing only one prefix: 2612
RIPE Region transit ASes present in the Internet Routing Table: 856
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 27
Number of RIPE addresses announced to Internet: 136570688
Equivalent to 8 /8s, 35 /16s and 231 /24s
Percentage of available RIPE address space announced: 74.0
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: 5430
Total LACNIC prefixes after maximum aggregation: 2292
Prefixes being announced from the LACNIC address blocks: 4882
Unique aggregates announced from the LACNIC address blocks: 3180
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: 72
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13299968
Equivalent to 0 /8s, 202 /16s and 241 /24s
Percentage of available LACNIC address space announced: 39.6
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 972 1109 689 Telstra Pty Ltd
4755 409 133 73 Videsh Sanchar Nigam Ltd. Aut
2907 376 1896 350 SINET Japan
703 338 373 266 UUNET
4134 304 2228 108 Data Communications Bureau
2764 297 322 260 connect.com.au pty ltd
17557 292 21 136 Pakistan Telecom
7474 270 306 210 Optus Communications Pty Ltd
17676 264 3980 26 XTAGE CORPORATION
9583 259 38 26 Satyam Infoway Ltd.,
4766 238 2461 173 Korea Internet Exchange for "
3786 235 773 203 DACOM Corporation
9800 203 332 52 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 182 20 16 BHARTI BT INTERNET LTD.
9929 180 160 36 China Netcom Corp.
4538 174 1586 21 China Education and Research
9942 171 68 103 COMindico Australia
17642 155 40 116 RequestDSL BGP AS# for Sydney
9238 141 9 22 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1461 8719 1017 UUNET Technologies, Inc.
7018 1400 7140 976 AT&T
3908 918 1573 492 Supernet, Inc.
1239 906 3031 651 Sprint
18566 688 176 8 Covad Communications
4323 668 574 193 Time Warner Communications, I
6197 614 397 270 BellSouth Network Solutions,
189 603 431 353 Genuity
3356 556 10711 466 Level 3 Communications, LLC
7843 529 462 134 Adelphia Corp.
852 517 1123 410 Telus Advanced Communications
209 505 2127 288 Qwest
6198 497 330 193 BellSouth Network Solutions,
7066 486 205 262 Virginia Polytechnic Institut
20115 471 203 294 Charter Communications
1 432 1019 268 GENUITY
10753 421 86 206 XCOM Technologies, INC.
690 408 59 273 Merit Network
705 406 184 247 UUNET Technologies, Inc.
4355 396 334 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 712 2121 591 UUNET - Commercial IP service
3301 297 1169 284 TeliaNet Sweden
3320 271 1989 231 Deutsche Telekom AG
8220 256 434 245 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
1257 228 358 183 SWIPnet Swedish IP Network
719 193 307 123 LANLINK autonomous system
3215 188 737 106 France Telecom Transpac
5515 186 779 148 Sonera Solution Autonomous Sy
5400 183 174 134 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
8708 155 110 152 Romania Data Systems S.A.
3303 142 540 137 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 125 376 123 Song Networks
3269 119 853 65 TELECOM ITALIA
2856 113 1293 104 BTnet UK Regional network
25186 103 128 71 France Telecom Transpac's Tra
3352 98 824 34 Ibernet, Internet Access Netw
2647 95 4225 48 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 340 103 105 ImpSat
8151 232 366 121 UniNet S.A. de C.V.
7303 222 40 62 Telecom Argentina Stet-France
11172 188 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 129 189 93 AVANTEL, S.A.
10620 129 8 25 TVCABLE BOGOTA
11340 103 3 36 Red Universitaria Nacional
11992 90 9 37 Integrated Systems
6147 84 70 19 Telefonica Del Peru
8065 82 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 72 21 27 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
1916 61 270 41 Fundacao de Amparo a Pesquisa
7984 59 12 40 Global One Colombia
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 688 680 Covad Communications
4323 668 475 Time Warner Communications, I
3908 918 426 Supernet, Inc.
7018 1400 424 AT&T
7843 529 395 Adelphia Corp.
6197 614 344 BellSouth Network Solutions,
4755 409 336 Videsh Sanchar Nigam Ltd. Aut
6198 497 304 BellSouth Network Solutions,
27364 320 297 Armstrong Cable Services
4355 396 287 EarthLink, Inc.
1221 972 283 Telstra Pty Ltd
22909 296 276 Comcast Cable Corporation
6347 355 274 SAVVIS Communications Corpora
1239 906 255 Sprint
189 603 250 Genuity
376 362 247 Reseau Interordinateurs Scien
22773 269 245 Cox Communications, Inc. Atla
25844 242 240 Skadden, Arps, Slate, Meagher
17676 264 238 XTAGE CORPORATION
6140 340 235 ImpSat
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
65100 PRIVATE 210.104.28.0/25 9768 Korea Telecom
23780 UNALLOCATED 211.15.112.0/20 2516 Kokusai Denshin Denw
23780 UNALLOCATED 211.19.224.0/19 2516 Kokusai Denshin Denw
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 /8:18 /9:4 /10:6 /11:12 /12:55
/13:97 /14:265 /15:471 /16:7438 /17:1759 /18:3129
/19:8478 /20:8802 /21:6454 /22:9452 /23:10886 /24:70089
/25:150 /26:202 /27:150 /28:26 /29:9 /30:52
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 682 688 Covad Communications
3908 579 918 Supernet, Inc.
189 519 603 Genuity
7018 503 1400 AT&T
6197 478 614 BellSouth Network Solutions,
701 438 1461 UUNET Technologies, Inc.
702 427 712 UUNET - Commercial IP service
10753 389 421 XCOM Technologies, INC.
6198 383 497 BellSouth Network Solutions,
7066 382 486 Virginia Polytechnic Institut
690 368 408 Merit Network
1239 316 906 Sprint
20115 316 471 Charter Communications
27364 314 320 Armstrong Cable Services
3356 276 556 Level 3 Communications, LLC
25844 242 242 Skadden, Arps, Slate, Meagher
7843 215 529 Adelphia Corp.
4355 214 396 EarthLink, Inc.
3320 210 271 Deutsche Telekom AG
209 203 505 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 13:1 15:4 16:1 17:3
20:6 24:832 25:1 32:84 38:46 40:23
44:2 55:1 57:14 61:310 62:415 63:1874
64:1776 65:1960 66:2673 67:287 68:359 69:252
80:420 81:130 82:16 128:147 129:167 130:60
131:84 132:18 133:1 134:168 135:9 136:186
137:115 138:127 139:50 140:162 141:138 142:101
143:44 144:86 145:14 146:274 147:65 148:303
149:79 150:121 151:68 152:217 153:58 154:5
155:128 156:58 157:54 158:135 159:140 160:45
161:69 162:358 163:76 164:311 165:154 166:97
167:305 168:178 169:95 170:326 171:9 192:5328
193:2451 194:1981 195:1152 196:463 198:3598 199:2735
200:2994 202:3955 203:5270 204:2997 205:2035 206:2328
207:2496 208:2562 209:2703 210:913 211:367 212:926
213:932 214:16 215:22 216:3264 217:724 218:105
219:35 220:116 221:11 222:1
End of report
