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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 16 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128871
Prefixes after maximum aggregation: 80597
Unique aggregates announced to Internet: 62193
Total ASes present in the Internet Routing Table: 15990
Origin-only ASes present in the Internet Routing Table: 13869
Origin ASes announcing only one prefix: 6303
Transit ASes present in the Internet Routing Table: 2121
Transit-only ASes present in the Internet Routing Table: 71
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: 1246819624
Equivalent to 74 /8s, 80 /16s and 245 /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: 57039
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22936
Total APNIC prefixes after maximum aggregation: 12889
Prefixes being announced from the APNIC address blocks: 21343
Unique aggregates announced from the APNIC address blocks: 12448
APNIC Region origin ASes present in the Internet Routing Table: 1913
APNIC Region origin ASes announcing only one prefix: 549
APNIC Region transit ASes present in the Internet Routing Table: 306
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 123757824
Equivalent to 7 /8s, 96 /16s and 101 /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: 77310
Total ARIN prefixes after maximum aggregation: 48720
Prefixes being announced from the ARIN address blocks: 54908
Unique aggregates announced from the ARIN address blocks: 17393
ARIN Region origin ASes present in the Internet Routing Table: 8726
ARIN Region origin ASes announcing only one prefix: 3005
ARIN Region transit ASes present in the Internet Routing Table: 846
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198315552
Equivalent to 11 /8s, 210 /16s and 14 /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: 23126
Total RIPE prefixes after maximum aggregation: 16746
Prefixes being announced from the RIPE address blocks: 19563
Unique aggregates announced from the RIPE address blocks: 13059
RIPE Region origin ASes present in the Internet Routing Table: 4931
RIPE Region origin ASes announcing only one prefix: 2645
RIPE Region transit ASes present in the Internet Routing Table: 868
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 137619776
Equivalent to 8 /8s, 51 /16s and 233 /24s
Percentage of available RIPE address space announced: 74.6
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
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: 5496
Total LACNIC prefixes after maximum aggregation: 2242
Prefixes being announced from the LACNIC address blocks: 4989
Unique aggregates announced from the LACNIC address blocks: 3205
LACNIC Region origin ASes present in the Internet Routing Table: 350
LACNIC Region origin ASes announcing only one prefix: 104
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13362688
Equivalent to 0 /8s, 203 /16s and 230 /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 964 1110 681 Telstra Pty Ltd
4755 397 134 72 Videsh Sanchar Nigam Ltd. Aut
2907 368 1879 345 SINET Japan
4134 359 2229 108 Data Communications Bureau
703 332 356 266 UUNET
17557 298 20 147 Pakistan Telecom
2764 295 290 258 connect.com.au pty ltd
17676 273 4028 34 XTAGE CORPORATION
7474 261 305 207 Optus Communications Pty Ltd
9583 243 43 9 Satyam Infoway Ltd.,
4766 241 2462 176 Korea Internet Exchange for "
3786 233 773 203 DACOM Corporation
4538 209 1714 21 China Education and Research
9800 202 331 51 CHINA UNICOM
9942 196 69 121 COMindico Australia
9929 191 160 36 China Netcom Corp.
9498 185 20 18 BHARTI BT INTERNET LTD.
9443 182 62 81 Primus Telecommunications
17642 154 40 116 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 1453 8667 1009 UUNET Technologies, Inc.
7018 1371 7097 951 AT&T
3908 941 1561 511 Supernet, Inc.
1239 923 3004 665 Sprint
18566 708 176 8 Covad Communications
4323 679 576 198 Time Warner Communications, I
6197 650 455 241 BellSouth Network Solutions,
3356 593 10829 496 Level 3 Communications, LLC
6198 593 329 194 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
852 517 1123 411 Telus Advanced Communications
209 513 2146 292 Qwest
7066 509 207 270 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 411 59 276 Merit Network
705 398 184 242 UUNET Technologies, Inc.
4355 395 332 108 EarthLink, Inc.
2386 383 508 200 AT&T Data Communications Serv
376 359 359 115 Reseau Interordinateurs Scien
6347 345 381 80 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 712 2100 592 UUNET - Commercial IP service
3301 297 1169 284 TeliaNet Sweden
3320 278 2005 238 Deutsche Telekom AG
8220 257 421 246 COLT Internet - International
1257 244 438 191 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
3215 192 705 98 France Telecom Transpac
5400 187 173 135 BT Ignite European Backbone
5515 185 778 147 Sonera Solution Autonomous Sy
786 180 1890 180 The JANET IP Service
8708 158 111 154 Romania Data Systems S.A.
3303 149 556 142 Swisscom Ltd
3246 128 376 126 Song Networks
12302 127 18 34 MobiFon S.A.
3269 121 885 66 TELECOM ITALIA
2856 115 1293 106 BTnet UK Regional network
25186 113 160 77 France Telecom Transpac's Tra
2647 101 4225 49 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 339 103 98 ImpSat
8151 235 367 123 UniNet S.A. de C.V.
7303 219 41 49 Telecom Argentina Stet-France
11172 184 77 42 Servicios Alestra S.A de C.V
16814 156 10 5 NSS, S.A.
6505 139 91 97 Global One Communicaoes Ltda
6503 129 205 93 AVANTEL, S.A.
10620 123 8 26 TVCABLE BOGOTA
11340 103 3 29 Red Universitaria Nacional
6147 91 70 19 Telefonica Del Peru
11992 87 25 31 Integrated Systems
8065 83 8 17 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
7080 64 4 1 Electronica y Comunicaciones
1916 60 266 40 Fundacao de Amparo a Pesquisa
10292 58 5 26 TELECOMMUNICATIONS OF JAMAICA
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 708 700 Covad Communications
4323 679 481 Time Warner Communications, I
3908 941 430 Supernet, Inc.
7018 1371 420 AT&T
6197 650 409 BellSouth Network Solutions,
6198 593 399 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
4755 397 325 Videsh Sanchar Nigam Ltd. Aut
27364 315 292 Armstrong Cable Services
5668 307 292 Century Telephone
22909 302 290 Comcast Cable Corporation
4355 395 287 EarthLink, Inc.
1221 964 283 Telstra Pty Ltd
22773 290 277 Cox Communications, Inc. Atla
6347 345 265 SAVVIS Communications Corpora
1239 923 258 Sprint
4134 359 251 Data Communications Bureau
376 359 244 Reseau Interordinateurs Scien
6140 339 241 ImpSat
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
65400 PRIVATE 149.165.240.0/21 11537 University Corporati
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
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 /14:269 /15:469 /16:7439 /17:1782 /18:3203
/19:8499 /20:8947 /21:6581 /22:9432 /23:10858 /24:70508
/25:162 /26:208 /27:153 /28:43 /29:24 /30:57
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 702 708 Covad Communications
3908 598 941 Supernet, Inc.
6197 507 650 BellSouth Network Solutions,
7018 482 1371 AT&T
6198 471 593 BellSouth Network Solutions,
701 442 1453 UUNET Technologies, Inc.
702 430 712 UUNET - Commercial IP service
7066 402 509 Virginia Polytechnic Institut
690 371 411 Merit Network
1239 327 923 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 284 593 Level 3 Communications, LLC
5668 273 307 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
3320 220 278 Deutsche Telekom AG
4355 217 395 EarthLink, Inc.
7843 210 530 Adelphia Corp.
209 204 513 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 13:1 15:6 16:1 17:2
20:6 24:819 25:1 32:83 38:50 40:23
43:1 44:2 55:1 57:14 61:329 62:448
63:1876 64:1807 65:1984 66:2160 67:263 68:396
69:278 80:415 81:179 82:19 128:149 129:155
130:63 131:82 132:19 134:166 135:10 136:180
137:120 138:144 139:49 140:165 141:137 142:100
143:48 144:86 145:33 146:275 147:68 148:301
149:79 150:121 151:60 152:217 153:58 154:7
155:129 156:58 157:52 158:140 159:142 160:46
161:69 162:363 163:68 164:318 165:152 166:99
167:305 168:178 169:96 170:315 171:9 192:5435
193:2446 194:1998 195:1279 196:475 198:3573 199:2835
200:3024 201:1 202:4065 203:5305 204:3002 205:2048
206:2292 207:2525 208:2560 209:2788 210:924 211:383
212:936 213:950 214:15 215:22 216:3271 217:766
218:111 219:41 220:115 221:13 222:1
End of report
