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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 15 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127225
Prefixes after maximum aggregation: 79279
Unique aggregates announced to Internet: 60084
Total ASes present in the Internet Routing Table: 15496
Origin-only ASes present in the Internet Routing Table: 13430
Origin ASes announcing only one prefix: 6102
Transit ASes present in the Internet Routing Table: 2066
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.9
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: 1238943840
Equivalent to 73 /8s, 216 /16s and 200 /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: 56344
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21965
Total APNIC prefixes after maximum aggregation: 12607
Prefixes being announced from the APNIC address blocks: 20411
Unique aggregates announced from the APNIC address blocks: 12328
APNIC Region origin ASes present in the Internet Routing Table: 1851
APNIC Region origin ASes announcing only one prefix: 530
APNIC Region transit ASes present in the Internet Routing Table: 304
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 117360160
Equivalent to 6 /8s, 254 /16s and 198 /24s
Percentage of available APNIC address space announced: 63.2
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: 77458
Total ARIN prefixes after maximum aggregation: 48223
Prefixes being announced from the ARIN address blocks: 55302
Unique aggregates announced from the ARIN address blocks: 16691
ARIN Region origin ASes present in the Internet Routing Table: 8512
ARIN Region origin ASes announcing only one prefix: 2909
ARIN Region transit ASes present in the Internet Routing Table: 822
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194884352
Equivalent to 11 /8s, 157 /16s and 179 /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: 22414
Total RIPE prefixes after maximum aggregation: 16163
Prefixes being announced from the RIPE address blocks: 18826
Unique aggregates announced from the RIPE address blocks: 12435
RIPE Region origin ASes present in the Internet Routing Table: 4724
RIPE Region origin ASes announcing only one prefix: 2571
RIPE Region transit ASes present in the Internet Routing Table: 839
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133635008
Equivalent to 7 /8s, 247 /16s and 27 /24s
Percentage of available RIPE address space announced: 72.4
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: 5387
Total LACNIC prefixes after maximum aggregation: 2286
Prefixes being announced from the LACNIC address blocks: 4835
Unique aggregates announced from the LACNIC address blocks: 3086
LACNIC Region origin ASes present in the Internet Routing Table: 340
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: 5.4
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12835840
Equivalent to 0 /8s, 195 /16s and 220 /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 740 Telstra Pty Ltd
4755 446 136 69 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 351 25 151 Pakistan Telecom
703 332 370 265 UUNET
2764 306 325 273 connect.com.au pty ltd
7474 269 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 239 37 22 Satyam Infoway Ltd.,
4134 229 1960 112 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 190 306 55 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 171 11 20 BHARTI BT INTERNET LTD.
4538 168 1506 21 China Education and Research
9929 163 169 33 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
9238 136 8 23 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1527 8815 1073 UUNET Technologies, Inc.
7018 1343 7181 927 AT&T
1239 958 2998 668 Sprint
3908 902 1517 472 Supernet, Inc.
7132 839 6591 232 Southwestern Bell Internet Se
189 685 372 307 Genuity
18566 640 160 8 Covad Communications
4323 610 526 175 Time Warner Communications, I
7843 588 374 225 Adelphia Corp.
1 572 2456 385 GENUITY
11305 549 170 72 Interland Incorporated
6197 526 367 220 BellSouth Network Solutions,
852 525 1124 417 Telus Advanced Communications
209 513 2190 300 Qwest
7066 489 204 259 Virginia Polytechnic Institut
705 488 192 309 UUNET Technologies, Inc.
6198 481 268 184 BellSouth Network Solutions,
20115 460 195 282 Charter Communications
690 448 64 294 Merit Network
2386 407 541 232 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1015 2155 616 UUNET - Commercial IP service
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
719 266 307 125 LANLINK autonomous system
3215 239 801 136 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 225 308 183 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 187 795 150 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 155 108 151 Romania Data Systems S.A.
3303 142 549 139 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 107 796 32 Ibernet, Internet Access Netw
5511 98 179 75 France Telecom
2647 97 4129 40 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 298 98 106 ImpSat
7303 236 37 59 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 140 4 48 Red Universitaria Nacional
16814 134 9 17 NSS, S.A.
6503 133 189 96 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
6147 99 70 21 Telefonica Del Peru
11992 87 8 37 Integrated Systems
13999 86 36 8 Mega Cable S.A. de C.V.
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 69 5 32 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 6 39 Global One Venezuela
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 640 632 Covad Communications
7132 839 607 Southwestern Bell Internet Se
11305 549 477 Interland Incorporated
4323 610 435 Time Warner Communications, I
3908 902 430 Supernet, Inc.
7018 1343 416 AT&T
702 1015 399 UUNET - Commercial IP service
189 685 378 Genuity
4755 446 377 Videsh Sanchar Nigam Ltd. Aut
7843 588 363 Adelphia Corp.
1221 1049 309 Telstra Pty Ltd
6197 526 306 BellSouth Network Solutions,
6198 481 297 BellSouth Network Solutions,
4355 406 295 EarthLink, Inc.
1239 958 290 Sprint
27364 307 289 Armstrong Cable Services
6347 361 279 SAVVIS Communications Corpora
22909 278 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 374 250 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 /15:475 /16:7434 /17:1728 /18:3061
/19:8606 /20:8626 /21:6308 /22:9197 /23:10727 /24:69959
/25:174 /26:293 /27:69 /28:39 /29:22 /30:23
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 711 1015 UUNET - Commercial IP service
18566 634 640 Covad Communications
189 605 685 Genuity
3908 577 902 Supernet, Inc.
11305 475 549 Interland Incorporated
7018 472 1343 AT&T
701 433 1527 UUNET Technologies, Inc.
690 406 448 Merit Network
6197 397 526 BellSouth Network Solutions,
7066 385 489 Virginia Polytechnic Institut
6198 375 481 BellSouth Network Solutions,
1239 361 958 Sprint
7843 337 588 Adelphia Corp.
20115 320 460 Charter Communications
27364 301 307 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 406 EarthLink, Inc.
1 214 572 GENUITY
3320 210 269 Deutsche Telekom AG
705 205 488 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:699 13:1 15:4 16:1 17:3
20:6 24:858 25:1 32:98 38:42 40:22
44:2 57:15 61:262 62:348 63:1882 64:1782
65:1972 66:2559 67:196 68:377 69:196 80:389
81:121 82:6 128:91 129:221 130:58 131:81
132:25 134:175 135:7 136:120 137:117 138:114
139:65 140:141 141:120 142:94 143:44 144:98
145:13 146:281 147:94 148:289 149:62 150:96
151:69 152:233 153:100 154:3 155:119 156:57
157:46 158:122 159:140 160:45 161:75 162:375
163:77 164:320 165:136 166:96 167:318 168:173
169:111 170:319 171:8 192:5339 193:2598 194:1982
195:1130 196:467 198:3584 199:2727 200:2968 202:3917
203:5261 204:2981 205:2053 206:2320 207:2454 208:2580
209:2869 210:864 211:361 212:1005 213:891 214:19
215:23 216:3435 217:674 218:95 219:65 220:97
221:8
End of report
