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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 18 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 128163
Prefixes after maximum aggregation: 79545
Unique aggregates announced to Internet: 60380
Total ASes present in the Internet Routing Table: 15542
Origin-only ASes present in the Internet Routing Table: 13464
Origin ASes announcing only one prefix: 6122
Transit ASes present in the Internet Routing Table: 2078
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 5.2
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1239112992
Equivalent to 73 /8s, 219 /16s and 93 /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: 57100
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22134
Total APNIC prefixes after maximum aggregation: 12684
Prefixes being announced from the APNIC address blocks: 20557
Unique aggregates announced from the APNIC address blocks: 12393
APNIC Region origin ASes present in the Internet Routing Table: 1863
APNIC Region origin ASes announcing only one prefix: 532
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 117708704
Equivalent to 7 /8s, 4 /16s and 23 /24s
Percentage of available APNIC address space announced: 63.4
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: 78284
Total ARIN prefixes after maximum aggregation: 48368
Prefixes being announced from the ARIN address blocks: 55972
Unique aggregates announced from the ARIN address blocks: 16768
ARIN Region origin ASes present in the Internet Routing Table: 8531
ARIN Region origin ASes announcing only one prefix: 2914
ARIN Region transit ASes present in the Internet Routing Table: 832
Average ARIN Region AS path length visible: 5.0
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194861856
Equivalent to 11 /8s, 157 /16s and 91 /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: 22394
Total RIPE prefixes after maximum aggregation: 16203
Prefixes being announced from the RIPE address blocks: 18901
Unique aggregates announced from the RIPE address blocks: 12521
RIPE Region origin ASes present in the Internet Routing Table: 4734
RIPE Region origin ASes announcing only one prefix: 2584
RIPE Region transit ASes present in the Internet Routing Table: 841
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 133852096
Equivalent to 7 /8s, 250 /16s and 107 /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: 5350
Total LACNIC prefixes after maximum aggregation: 2290
Prefixes being announced from the LACNIC address blocks: 4797
Unique aggregates announced from the LACNIC address blocks: 3099
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: 72
Average LACNIC Region AS path length visible: 5.6
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 12848128
Equivalent to 0 /8s, 196 /16s and 12 /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 1047 1069 739 Telstra Pty Ltd
4755 449 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 373 1896 349 SINET Japan
17557 353 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 238 37 21 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 163 153 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 1525 8783 1071 UUNET Technologies, Inc.
3908 1457 1518 476 Supernet, Inc.
7018 1343 7181 928 AT&T
1239 962 3018 668 Sprint
7132 843 6592 233 Southwestern Bell Internet Se
189 688 372 311 Genuity
18566 639 160 8 Covad Communications
4323 609 526 175 Time Warner Communications, I
7843 598 379 239 Adelphia Corp.
1 564 2441 378 GENUITY
11305 557 171 79 Interland Incorporated
6197 527 367 220 BellSouth Network Solutions,
852 525 1124 417 Telus Advanced Communications
209 515 2190 300 Qwest
7066 488 204 261 Virginia Polytechnic Institut
705 487 192 308 UUNET Technologies, Inc.
6198 480 269 180 BellSouth Network Solutions,
20115 473 195 284 Charter Communications
690 442 64 292 Merit Network
2386 416 542 234 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1014 2157 617 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
680 232 2053 229 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 221 308 181 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 187 795 150 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 154 108 151 Romania Data Systems S.A.
3303 143 549 140 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 111 796 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 297 98 106 ImpSat
7303 233 37 54 Telecom Argentina Stet-France
8151 220 350 117 UniNet S.A. de C.V.
11172 173 69 42 Servicios Alestra S.A de C.V
11340 143 4 53 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 133 189 96 AVANTEL, S.A.
10620 119 7 32 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 87 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
1916 73 306 43 Fundacao de Amparo a Pesquisa
11830 70 5 32 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7927 66 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 62 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
3908 1457 981 Supernet, Inc.
18566 639 631 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 557 478 Interland Incorporated
4323 609 434 Time Warner Communications, I
7018 1343 415 AT&T
702 1014 397 UUNET - Commercial IP service
4755 449 379 Videsh Sanchar Nigam Ltd. Aut
189 688 377 Genuity
7843 598 359 Adelphia Corp.
1221 1047 308 Telstra Pty Ltd
6197 527 307 BellSouth Network Solutions,
6198 480 300 BellSouth Network Solutions,
1239 962 294 Sprint
4355 405 294 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
376 373 250 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
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 /15:476 /16:7428 /17:1729 /18:3062
/19:8644 /20:8698 /21:6390 /22:9306 /23:10919 /24:70268
/25:180 /26:297 /27:201 /28:39 /29:22 /30:21
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 1003 1457 Supernet, Inc.
702 708 1014 UUNET - Commercial IP service
18566 633 639 Covad Communications
189 608 688 Genuity
11305 483 557 Interland Incorporated
7018 473 1343 AT&T
701 433 1525 UUNET Technologies, Inc.
690 400 442 Merit Network
6197 398 527 BellSouth Network Solutions,
7066 384 488 Virginia Polytechnic Institut
6198 376 480 BellSouth Network Solutions,
1239 357 962 Sprint
7843 342 598 Adelphia Corp.
20115 324 473 Charter Communications
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 405 EarthLink, Inc.
1 212 564 GENUITY
3320 210 269 Deutsche Telekom AG
705 205 487 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:706 13:1 15:4 16:1 17:3
20:6 24:857 25:1 32:107 38:41 40:22
44:2 57:15 61:275 62:374 63:1943 64:1789
65:1975 66:2576 67:201 68:376 69:217 80:394
81:120 82:6 128:132 129:228 130:59 131:81
132:24 134:175 135:7 136:122 137:117 138:113
139:42 140:174 141:115 142:94 143:44 144:96
145:13 146:281 147:61 148:291 149:62 150:96
151:70 152:232 153:101 154:3 155:119 156:56
157:46 158:122 159:138 160:45 161:75 162:375
163:79 164:321 165:139 166:96 167:316 168:173
169:117 170:319 171:8 192:5343 193:2592 194:1981
195:1140 196:471 198:3587 199:2732 200:2962 202:3928
203:5277 204:2982 205:2051 206:2320 207:2451 208:2595
209:2919 210:863 211:363 212:1005 213:864 214:19
215:23 216:3467 217:677 218:94 219:66 220:97
221:8
End of report
