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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 20 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128882
Prefixes after maximum aggregation: 80555
Unique aggregates announced to Internet: 62221
Total ASes present in the Internet Routing Table: 16009
Origin-only ASes present in the Internet Routing Table: 13901
Origin ASes announcing only one prefix: 6320
Transit ASes present in the Internet Routing Table: 2108
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: 22
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1246921772
Equivalent to 74 /8s, 82 /16s and 132 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56982
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22971
Total APNIC prefixes after maximum aggregation: 12879
Prefixes being announced from the APNIC address blocks: 21397
Unique aggregates announced from the APNIC address blocks: 12459
APNIC Region origin ASes present in the Internet Routing Table: 1917
APNIC Region origin ASes announcing only one prefix: 551
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: 15
Number of APNIC addresses announced to Internet: 123754752
Equivalent to 7 /8s, 96 /16s and 89 /24s
Percentage of available APNIC address space announced: 66.7
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: 77264
Total ARIN prefixes after maximum aggregation: 48654
Prefixes being announced from the ARIN address blocks: 54896
Unique aggregates announced from the ARIN address blocks: 17415
ARIN Region origin ASes present in the Internet Routing Table: 8733
ARIN Region origin ASes announcing only one prefix: 3012
ARIN Region transit ASes present in the Internet Routing Table: 843
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198378272
Equivalent to 11 /8s, 211 /16s and 3 /24s
Percentage of available ARIN address space announced: 73.9
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: 23094
Total RIPE prefixes after maximum aggregation: 16767
Prefixes being announced from the RIPE address blocks: 19510
Unique aggregates announced from the RIPE address blocks: 13075
RIPE Region origin ASes present in the Internet Routing Table: 4936
RIPE Region origin ASes announcing only one prefix: 2653
RIPE Region transit ASes present in the Internet Routing Table: 863
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 137774912
Equivalent to 8 /8s, 54 /16s and 71 /24s
Percentage of available RIPE address space announced: 74.7
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
30720 - 31743
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: 5550
Total LACNIC prefixes after maximum aggregation: 2255
Prefixes being announced from the LACNIC address blocks: 5031
Unique aggregates announced from the LACNIC address blocks: 3211
LACNIC Region origin ASes present in the Internet Routing Table: 351
LACNIC Region origin ASes announcing only one prefix: 104
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13358080
Equivalent to 0 /8s, 203 /16s and 212 /24s
Percentage of available LACNIC address space announced: 39.8
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 967 1110 683 Telstra Pty Ltd
4755 393 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 366 1879 343 SINET Japan
4134 356 2229 108 Data Communications Bureau
703 332 356 266 UUNET
2764 296 289 258 connect.com.au pty ltd
17557 286 20 143 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
7474 266 306 212 Optus Communications Pty Ltd
9583 253 44 11 Satyam Infoway Ltd.,
4766 242 2462 177 Korea Internet Exchange for "
3786 233 773 203 DACOM Corporation
4538 215 1714 21 China Education and Research
9800 202 331 51 CHINA UNICOM
9942 199 69 118 COMindico Australia
9929 188 160 36 China Netcom Corp.
9443 182 62 81 Primus Telecommunications
9498 182 20 18 BHARTI BT INTERNET LTD.
17642 153 40 115 RequestDSL BGP AS# for Sydney
4739 143 58 132 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1450 8665 1005 UUNET Technologies, Inc.
7018 1362 7097 943 AT&T
3908 947 1562 512 Supernet, Inc.
1239 924 3036 661 Sprint
18566 710 176 8 Covad Communications
4323 683 577 198 Time Warner Communications, I
6197 640 454 240 BellSouth Network Solutions,
3356 596 10813 498 Level 3 Communications, LLC
6198 573 336 196 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
209 523 2149 296 Qwest
852 516 1123 410 Telus Advanced Communications
7066 510 207 271 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 411 59 276 Merit Network
705 399 184 243 UUNET Technologies, Inc.
4355 395 331 106 EarthLink, Inc.
2386 382 508 199 AT&T Data Communications Serv
376 359 359 115 Reseau Interordinateurs Scien
6347 347 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 712 2097 592 UUNET - Commercial IP service
3301 300 1169 285 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 250 438 191 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
719 193 307 123 LANLINK autonomous system
5400 186 171 134 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
786 176 1857 176 The JANET IP Service
3215 174 704 90 France Telecom Transpac
8708 160 111 154 Romania Data Systems S.A.
3303 149 556 142 Swisscom Ltd
25186 129 161 89 France Telecom Transpac's Tra
12302 127 18 34 MobiFon S.A.
3246 126 374 124 Song Networks
3269 121 885 66 TELECOM ITALIA
2856 116 1293 107 BTnet UK Regional network
2647 101 4225 49 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 337 104 99 ImpSat
8151 235 367 123 UniNet S.A. de C.V.
7303 219 41 49 Telecom Argentina Stet-France
11172 191 77 42 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
6505 140 91 98 Global One Communicaoes Ltda
6503 128 189 92 AVANTEL, S.A.
10620 123 8 26 TVCABLE BOGOTA
6147 106 70 19 Telefonica Del Peru
11340 103 3 29 Red Universitaria Nacional
11992 86 24 30 Integrated Systems
8065 84 10 18 Empresas Publicas de Medellin
15311 76 16 39 Telefonica Empresas
6535 75 5 18 Chilesat Servicios Empresari
11830 75 22 24 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
11311 66 7 23 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 710 702 Covad Communications
4323 683 485 Time Warner Communications, I
3908 947 435 Supernet, Inc.
7018 1362 419 AT&T
6197 640 400 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 573 377 BellSouth Network Solutions,
4755 393 322 Videsh Sanchar Nigam Ltd. Aut
27364 315 292 Armstrong Cable Services
5668 306 291 Century Telephone
22909 302 290 Comcast Cable Corporation
4355 395 289 EarthLink, Inc.
1221 967 284 Telstra Pty Ltd
22773 293 279 Cox Communications, Inc. Atla
6347 347 267 SAVVIS Communications Corpora
1239 924 263 Sprint
4134 356 248 Data Communications Bureau
376 359 244 Reseau Interordinateurs Scien
9583 253 242 Satyam Infoway Ltd.,
25844 243 241 Skadden, Arps, Slate, Meagher
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
65503 PRIVATE 202.133.192.0/20 4775 Telecom Carrier /
65100 PRIVATE 210.104.28.0/25 9768 Korea Telecom
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 /9:4 /10:6 /11:12 /12:55
/13:98 /14:268 /15:471 /16:7432 /17:1783 /18:3209
/19:8513 /20:8962 /21:6569 /22:9413 /23:10819 /24:70559
/25:160 /26:204 /27:156 /28:43 /29:25 /30:59
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 704 710 Covad Communications
3908 604 947 Supernet, Inc.
6197 498 640 BellSouth Network Solutions,
7018 483 1362 AT&T
6198 444 573 BellSouth Network Solutions,
701 443 1450 UUNET Technologies, Inc.
702 432 712 UUNET - Commercial IP service
7066 402 510 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 327 924 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 288 596 Level 3 Communications, LLC
5668 272 306 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 220 278 Deutsche Telekom AG
4355 219 395 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 207 523 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:718 13:1 15:6 16:1 17:2
20:7 24:819 25:1 32:81 38:52 40:23
43:1 44:2 55:1 57:14 61:336 62:414
63:1878 64:1814 65:1979 66:2173 67:274 68:398
69:274 80:426 81:158 82:34 128:153 129:156
130:59 131:83 132:19 134:166 135:10 136:181
137:120 138:132 139:49 140:164 141:138 142:101
143:49 144:88 145:33 146:279 147:67 148:303
149:78 150:121 151:60 152:212 153:59 154:7
155:129 156:58 157:52 158:140 159:143 160:46
161:69 162:362 163:65 164:319 165:152 166:100
167:307 168:177 169:97 170:308 171:9 192:5440
193:2445 194:2004 195:1278 196:476 198:3543 199:2834
200:3061 201:1 202:4069 203:5332 204:2991 205:2049
206:2287 207:2555 208:2524 209:2781 210:935 211:391
212:931 213:955 214:15 215:22 216:3282 217:767
218:113 219:41 220:114 221:13 222:1
End of report
