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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 19 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127529
Prefixes after maximum aggregation: 79545
Unique aggregates announced to Internet: 60359
Total ASes present in the Internet Routing Table: 15536
Origin-only ASes present in the Internet Routing Table: 13459
Origin ASes announcing only one prefix: 6127
Transit ASes present in the Internet Routing Table: 2077
Transit-only ASes present in the Internet Routing Table: 67
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 255
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: 15
Number of addresses announced to Internet: 1239066016
Equivalent to 73 /8s, 218 /16s and 165 /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: 56659
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22120
Total APNIC prefixes after maximum aggregation: 12698
Prefixes being announced from the APNIC address blocks: 20544
Unique aggregates announced from the APNIC address blocks: 12423
APNIC Region origin ASes present in the Internet Routing Table: 1864
APNIC Region origin ASes announcing only one prefix: 536
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117848352
Equivalent to 7 /8s, 6 /16s and 57 /24s
Percentage of available APNIC address space announced: 63.5
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: 77677
Total ARIN prefixes after maximum aggregation: 48349
Prefixes being announced from the ARIN address blocks: 55394
Unique aggregates announced from the ARIN address blocks: 16747
ARIN Region origin ASes present in the Internet Routing Table: 8529
ARIN Region origin ASes announcing only one prefix: 2913
ARIN Region transit ASes present in the Internet Routing Table: 821
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194881312
Equivalent to 11 /8s, 157 /16s and 167 /24s
Percentage of available ARIN address space announced: 72.6
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: 22401
Total RIPE prefixes after maximum aggregation: 16210
Prefixes being announced from the RIPE address blocks: 18918
Unique aggregates announced from the RIPE address blocks: 12523
RIPE Region origin ASes present in the Internet Routing Table: 4734
RIPE Region origin ASes announcing only one prefix: 2586
RIPE Region transit ASes present in the Internet Routing Table: 847
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133766848
Equivalent to 7 /8s, 249 /16s and 30 /24s
Percentage of available RIPE address space announced: 72.5
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: 5330
Total LACNIC prefixes after maximum aggregation: 2288
Prefixes being announced from the LACNIC address blocks: 4780
Unique aggregates announced from the LACNIC address blocks: 3077
LACNIC Region origin ASes present in the Internet Routing Table: 341
LACNIC Region origin ASes announcing only one prefix: 92
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: 28
Number of LACNIC addresses announced to Internet: 12836608
Equivalent to 0 /8s, 195 /16s and 223 /24s
Percentage of available LACNIC address space announced: 38.3
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 1049 1069 741 Telstra Pty Ltd
4755 449 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 354 25 151 Pakistan Telecom
703 333 370 266 UUNET
2764 309 325 276 connect.com.au pty ltd
7474 285 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 239 37 22 Satyam Infoway Ltd.,
4134 233 2008 113 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 192 307 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 168 1506 21 China Education and Research
9498 168 11 17 BHARTI BT INTERNET LTD.
9929 164 153 33 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
9238 138 8 20 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1526 8800 1072 UUNET Technologies, Inc.
7018 1346 7198 931 AT&T
1239 961 3015 667 Sprint
3908 896 1533 476 Supernet, Inc.
7132 843 6592 233 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 641 160 8 Covad Communications
4323 609 526 175 Time Warner Communications, I
7843 599 379 239 Adelphia Corp.
1 565 2445 379 GENUITY
11305 558 171 79 Interland Incorporated
6197 541 368 233 BellSouth Network Solutions,
852 524 1124 416 Telus Advanced Communications
209 517 2190 301 Qwest
705 488 192 309 UUNET Technologies, Inc.
7066 486 204 259 Virginia Polytechnic Institut
6198 482 269 180 BellSouth Network Solutions,
20115 473 195 284 Charter Communications
690 440 63 291 Merit Network
2386 404 541 231 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1012 2157 616 UUNET - Commercial IP service
719 311 307 125 LANLINK autonomous system
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
3215 240 801 136 France Telecom Transpac
680 233 2054 230 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 225 308 183 SWIPnet Swedish IP Network
5400 194 139 115 BT Ignite European Backbone
5515 185 794 150 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 154 108 151 Romania Data Systems S.A.
3303 143 548 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 126 1315 117 BTnet UK Regional network
3246 122 373 118 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 110 796 32 Ibernet, Internet Access Netw
2647 98 4129 41 SITA
5511 98 179 75 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 296 98 106 ImpSat
7303 237 37 57 Telecom Argentina Stet-France
8151 220 334 116 UniNet S.A. de C.V.
11172 173 69 42 Servicios Alestra S.A de C.V
11340 141 4 51 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 134 205 96 AVANTEL, S.A.
10620 119 7 32 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
4270 67 18 9 Red de Interconexion Universi
1916 66 300 41 Fundacao de Amparo a Pesquisa
7927 65 6 39 Global One Venezuela
11830 65 4 37 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
13999 61 36 8 Mega Cable S.A. de C.V.
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 641 633 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 558 479 Interland Incorporated
4323 609 434 Time Warner Communications, I
3908 896 420 Supernet, Inc.
7018 1346 415 AT&T
702 1012 396 UUNET - Commercial IP service
4755 449 379 Videsh Sanchar Nigam Ltd. Aut
189 689 377 Genuity
7843 599 360 Adelphia Corp.
1221 1049 308 Telstra Pty Ltd
6197 541 308 BellSouth Network Solutions,
6198 482 302 BellSouth Network Solutions,
1239 961 294 Sprint
4355 403 294 EarthLink, Inc.
27364 301 283 Armstrong Cable Services
6347 364 281 SAVVIS Communications Corpora
22909 279 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 372 246 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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
/13:97 /14:261 /15:477 /16:7424 /17:1728 /18:3058
/19:8648 /20:8633 /21:6306 /22:9203 /23:10783 /24:70029
/25:177 /26:296 /27:200 /28:39 /29:24 /30:21
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 706 1012 UUNET - Commercial IP service
18566 635 641 Covad Communications
189 609 689 Genuity
3908 570 896 Supernet, Inc.
11305 484 558 Interland Incorporated
7018 473 1346 AT&T
701 433 1526 UUNET Technologies, Inc.
6197 412 541 BellSouth Network Solutions,
690 398 440 Merit Network
7066 384 486 Virginia Polytechnic Institut
6198 376 482 BellSouth Network Solutions,
1239 356 961 Sprint
7843 343 599 Adelphia Corp.
20115 324 473 Charter Communications
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 212 565 GENUITY
3320 210 269 Deutsche Telekom AG
705 207 488 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 24:860 25:1 32:99 38:41 40:22
44:2 57:15 61:277 62:374 63:1877 64:1776
65:1968 66:2571 67:203 68:376 69:219 80:395
81:119 82:5 128:131 129:227 130:59 131:81
132:25 134:175 135:7 136:122 137:114 138:113
139:42 140:172 141:115 142:94 143:44 144:98
145:13 146:281 147:61 148:287 149:62 150:103
151:70 152:230 153:102 154:3 155:119 156:56
157:46 158:122 159:137 160:45 161:75 162:375
163:79 164:321 165:139 166:96 167:315 168:173
169:107 170:320 171:8 192:5338 193:2592 194:1982
195:1143 196:472 198:3584 199:2724 200:2957 202:3916
203:5274 204:2974 205:2052 206:2313 207:2430 208:2594
209:2871 210:865 211:361 212:1017 213:863 214:17
215:23 216:3430 217:682 218:95 219:67 220:97
221:8
End of report
