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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 31 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127464
Prefixes after maximum aggregation: 79627
Unique aggregates announced to Internet: 59936
Total ASes present in the Internet Routing Table: 15604
Origin-only ASes present in the Internet Routing Table: 13532
Origin ASes announcing only one prefix: 6146
Transit ASes present in the Internet Routing Table: 2072
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 20
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: 14
Number of addresses announced to Internet: 1221278176
Equivalent to 72 /8s, 203 /16s and 57 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56532
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22013
Total APNIC prefixes after maximum aggregation: 12655
Prefixes being announced from the APNIC address blocks: 20426
Unique aggregates announced from the APNIC address blocks: 12375
APNIC Region origin ASes present in the Internet Routing Table: 1868
APNIC Region origin ASes announcing only one prefix: 534
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 118608576
Equivalent to 7 /8s, 17 /16s and 210 /24s
Percentage of available APNIC address space announced: 63.9
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: 77616
Total ARIN prefixes after maximum aggregation: 48424
Prefixes being announced from the ARIN address blocks: 55411
Unique aggregates announced from the ARIN address blocks: 16306
ARIN Region origin ASes present in the Internet Routing Table: 8568
ARIN Region origin ASes announcing only one prefix: 2919
ARIN Region transit ASes present in the Internet Routing Table: 828
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196481312
Equivalent to 11 /8s, 182 /16s and 17 /24s
Percentage of available ARIN address space announced: 73.2
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: 22470
Total RIPE prefixes after maximum aggregation: 16265
Prefixes being announced from the RIPE address blocks: 18979
Unique aggregates announced from the RIPE address blocks: 12586
RIPE Region origin ASes present in the Internet Routing Table: 4755
RIPE Region origin ASes announcing only one prefix: 2599
RIPE Region transit ASes present in the Internet Routing Table: 836
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134086464
Equivalent to 7 /8s, 253 /16s and 255 /24s
Percentage of available RIPE address space announced: 72.7
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
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: 5364
Total LACNIC prefixes after maximum aggregation: 2283
Prefixes being announced from the LACNIC address blocks: 4830
Unique aggregates announced from the LACNIC address blocks: 3113
LACNIC Region origin ASes present in the Internet Routing Table: 343
LACNIC Region origin ASes announcing only one prefix: 94
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12863232
Equivalent to 0 /8s, 196 /16s and 71 /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 1053 739 Telstra Pty Ltd
4755 438 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 331 370 264 UUNET
17557 317 22 143 Pakistan Telecom
2764 307 326 275 connect.com.au pty ltd
7474 260 306 200 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
9583 241 37 20 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4134 232 2008 113 Data Communications Bureau
4766 222 2460 165 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 169 1506 21 China Education and Research
9929 169 153 33 China Netcom Corp.
9498 157 11 27 BHARTI BT INTERNET LTD.
4739 141 58 130 Commerical Internet eXchange
9238 140 9 21 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1492 8781 1053 UUNET Technologies, Inc.
7018 1360 7167 946 AT&T
1239 964 2983 666 Sprint
3908 902 1534 482 Supernet, Inc.
7132 849 6604 236 Southwestern Bell Internet Se
189 672 371 323 Genuity
18566 643 160 8 Covad Communications
4323 616 526 178 Time Warner Communications, I
7843 605 393 236 Adelphia Corp.
6197 558 440 199 BellSouth Network Solutions,
209 524 2194 305 Qwest
852 523 1124 415 Telus Advanced Communications
1 519 1207 345 GENUITY
6198 490 271 186 BellSouth Network Solutions,
7066 487 204 258 Virginia Polytechnic Institut
705 483 191 306 UUNET Technologies, Inc.
20115 472 196 283 Charter Communications
690 435 63 287 Merit Network
3356 434 10672 356 Level 3 Communications, LLC
4355 401 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1012 2141 613 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 288 1169 276 TeliaNet Sweden
3320 262 1988 223 Deutsche Telekom AG
8220 238 428 226 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 227 309 185 SWIPnet Swedish IP Network
3215 214 752 121 France Telecom Transpac
5515 186 795 150 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 165 158 117 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 142 548 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 121 374 119 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 110 796 32 Ibernet, Internet Access Netw
2647 101 4129 44 SITA
5511 99 179 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 98 107 ImpSat
7303 240 39 57 Telecom Argentina Stet-France
8151 217 318 115 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 133 205 93 AVANTEL, S.A.
11340 123 3 42 Red Universitaria Nacional
10620 122 8 33 TVCABLE BOGOTA
6147 91 70 21 Telefonica Del Peru
11992 90 9 38 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 68 18 9 Red de Interconexion Universi
13999 67 36 8 Mega Cable S.A. de C.V.
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 643 635 Covad Communications
7132 849 613 Southwestern Bell Internet Se
4323 616 438 Time Warner Communications, I
3908 902 420 Supernet, Inc.
7018 1360 414 AT&T
702 1012 399 UUNET - Commercial IP service
7843 605 369 Adelphia Corp.
4755 438 368 Videsh Sanchar Nigam Ltd. Aut
6197 558 359 BellSouth Network Solutions,
189 672 349 Genuity
11305 358 320 Interland Incorporated
1221 1049 310 Telstra Pty Ltd
6198 490 304 BellSouth Network Solutions,
1239 964 298 Sprint
27364 317 298 Armstrong Cable Services
4355 401 292 EarthLink, Inc.
6347 359 278 SAVVIS Communications Corpora
22909 284 269 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 358 243 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
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 /8:18 /9:5 /10:8 /11:13 /12:54
/13:98 /14:261 /15:477 /16:7427 /17:1739 /18:3062
/19:8644 /20:8677 /21:6318 /22:9287 /23:10849 /24:69798
/25:167 /26:275 /27:178 /28:27 /29:11 /30:46
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 706 1012 UUNET - Commercial IP service
18566 637 643 Covad Communications
189 592 672 Genuity
3908 574 902 Supernet, Inc.
7018 481 1360 AT&T
701 430 1492 UUNET Technologies, Inc.
6197 425 558 BellSouth Network Solutions,
690 394 435 Merit Network
7066 385 487 Virginia Polytechnic Institut
6198 383 490 BellSouth Network Solutions,
1239 362 964 Sprint
7843 340 605 Adelphia Corp.
20115 321 472 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 401 EarthLink, Inc.
1 210 519 GENUITY
209 209 524 Qwest
3320 203 262 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:868 25:1 32:99 38:43 40:23
44:2 57:15 61:284 62:379 63:1891 64:1726
65:1987 66:2632 67:211 68:394 69:238 80:398
81:118 82:6 128:132 129:167 130:57 131:81
132:14 134:176 135:7 136:122 137:118 138:121
139:44 140:157 141:115 142:94 143:44 144:99
145:13 146:283 147:59 148:298 149:64 150:105
151:63 152:219 153:97 154:3 155:119 156:56
157:43 158:124 159:137 160:45 161:77 162:410
163:79 164:320 165:142 166:97 167:319 168:181
169:88 170:322 171:8 192:5343 193:2588 194:1985
195:1143 196:473 198:3567 199:2729 200:2992 202:3895
203:5275 204:2959 205:2035 206:2324 207:2418 208:2574
209:2863 210:867 211:284 212:1023 213:874 214:16
215:21 216:3264 217:694 218:95 219:67 220:64
221:8
End of report
