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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 21 Oct, 2003
Analysis Summary
----------------
BGP routing table entries examined: 129037
Prefixes after maximum aggregation: 80596
Unique aggregates announced to Internet: 62231
Total ASes present in the Internet Routing Table: 16026
Origin-only ASes present in the Internet Routing Table: 13905
Origin ASes announcing only one prefix: 6323
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: 1247646508
Equivalent to 74 /8s, 93 /16s and 147 /24s
Percentage of available address space announced: 33.7
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 57037
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 23017
Total APNIC prefixes after maximum aggregation: 12897
Prefixes being announced from the APNIC address blocks: 21452
Unique aggregates announced from the APNIC address blocks: 12482
APNIC Region origin ASes present in the Internet Routing Table: 1917
APNIC Region origin ASes announcing only one prefix: 548
APNIC Region transit ASes present in the Internet Routing Table: 305
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 123798528
Equivalent to 7 /8s, 97 /16s and 4 /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: 77390
Total ARIN prefixes after maximum aggregation: 48690
Prefixes being announced from the ARIN address blocks: 54924
Unique aggregates announced from the ARIN address blocks: 17417
ARIN Region origin ASes present in the Internet Routing Table: 8737
ARIN Region origin ASes announcing only one prefix: 3009
ARIN Region transit ASes present in the Internet Routing Table: 847
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 198410784
Equivalent to 11 /8s, 211 /16s and 130 /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: 23084
Total RIPE prefixes after maximum aggregation: 16762
Prefixes being announced from the RIPE address blocks: 19546
Unique aggregates announced from the RIPE address blocks: 13031
RIPE Region origin ASes present in the Internet Routing Table: 4948
RIPE Region origin ASes announcing only one prefix: 2662
RIPE Region transit ASes present in the Internet Routing Table: 867
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 137858880
Equivalent to 8 /8s, 55 /16s and 143 /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: 5543
Total LACNIC prefixes after maximum aggregation: 2247
Prefixes being announced from the LACNIC address blocks: 5026
Unique aggregates announced from the LACNIC address blocks: 3217
LACNIC Region origin ASes present in the Internet Routing Table: 353
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: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13392128
Equivalent to 0 /8s, 204 /16s and 89 /24s
Percentage of available LACNIC address space announced: 39.9
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 968 1110 684 Telstra Pty Ltd
4755 394 134 72 Videsh Sanchar Nigam Ltd. Aut
2907 367 1879 344 SINET Japan
4134 355 2228 107 Data Communications Bureau
703 331 356 266 UUNET
2764 297 289 258 connect.com.au pty ltd
17557 286 20 143 Pakistan Telecom
17676 273 4028 34 XTAGE CORPORATION
7474 262 305 208 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 201 330 57 CHINA UNICOM
9942 200 69 117 COMindico Australia
9929 188 160 36 China Netcom Corp.
9498 183 20 18 BHARTI BT INTERNET LTD.
9443 182 62 81 Primus Telecommunications
17642 157 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 1450 8667 1005 UUNET Technologies, Inc.
7018 1364 7097 945 AT&T
3908 947 1562 513 Supernet, Inc.
1239 923 3052 659 Sprint
18566 710 176 8 Covad Communications
4323 684 577 198 Time Warner Communications, I
6197 640 454 240 BellSouth Network Solutions,
3356 597 10813 499 Level 3 Communications, LLC
6198 572 336 196 BellSouth Network Solutions,
7843 530 473 138 Adelphia Corp.
209 524 2149 297 Qwest
852 517 1123 411 Telus Advanced Communications
7066 510 207 271 Virginia Polytechnic Institut
20115 484 214 298 Charter Communications
690 410 59 275 Merit Network
705 398 184 242 UUNET Technologies, Inc.
4355 398 331 106 EarthLink, Inc.
2386 382 508 199 AT&T Data Communications Serv
376 361 359 115 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
702 708 2096 588 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
3215 180 704 90 France Telecom Transpac
786 176 1857 176 The JANET IP Service
8708 160 111 154 Romania Data Systems S.A.
3303 147 557 142 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 120 881 65 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 236 367 124 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 19 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 684 486 Time Warner Communications, I
3908 947 434 Supernet, Inc.
7018 1364 419 AT&T
6197 640 400 BellSouth Network Solutions,
7843 530 392 Adelphia Corp.
6198 572 376 BellSouth Network Solutions,
4755 394 322 Videsh Sanchar Nigam Ltd. Aut
4355 398 292 EarthLink, Inc.
27364 315 292 Armstrong Cable Services
5668 307 292 Century Telephone
22909 304 291 Comcast Cable Corporation
1221 968 284 Telstra Pty Ltd
22773 294 279 Cox Communications, Inc. Atla
6347 347 267 SAVVIS Communications Corpora
1239 923 264 Sprint
4134 355 248 Data Communications Bureau
376 361 246 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 /16:7443 /17:1785 /18:3213
/19:8518 /20:8965 /21:6564 /22:9417 /23:10833 /24:70673
/25:161 /26:205 /27:157 /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 1364 AT&T
701 443 1450 UUNET Technologies, Inc.
6198 443 572 BellSouth Network Solutions,
702 429 708 UUNET - Commercial IP service
7066 402 510 Virginia Polytechnic Institut
690 371 410 Merit Network
1239 326 923 Sprint
20115 320 484 Charter Communications
27364 309 315 Armstrong Cable Services
3356 288 597 Level 3 Communications, LLC
5668 273 307 Century Telephone
25844 243 243 Skadden, Arps, Slate, Meagher
4355 221 398 EarthLink, Inc.
3320 220 278 Deutsche Telekom AG
7843 210 530 Adelphia Corp.
209 208 524 Qwest
14824 201 226 NewSouth Communications Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:717 13:1 15:6 16:1 17:2
20:7 24:819 25:1 32:83 38:51 40:23
43:1 44:2 55:1 57:14 61:332 62:440
63:1883 64:1816 65:1976 66:2171 67:273 68:397
69:274 80:423 81:154 82:65 128:157 129:156
130:63 131:83 132:19 134:166 135:10 136:179
137:120 138:133 139:49 140:164 141:138 142:101
143:49 144:88 145:33 146:277 147:67 148:303
149:78 150:121 151:60 152:211 153:59 154:7
155:130 156:58 157:53 158:140 159:142 160:46
161:69 162:363 163:64 164:315 165:152 166:100
167:307 168:177 169:97 170:311 171:9 192:5433
193:2447 194:1996 195:1281 196:483 198:3563 199:2828
200:3048 201:2 202:4097 203:5353 204:3000 205:2047
206:2280 207:2563 208:2527 209:2786 210:935 211:391
212:935 213:938 214:15 215:22 216:3294 217:768
218:113 219:41 220:114 221:13 222:1
End of report
