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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 27 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127584
Prefixes after maximum aggregation: 79606
Unique aggregates announced to Internet: 59992
Total ASes present in the Internet Routing Table: 15585
Origin-only ASes present in the Internet Routing Table: 13520
Origin ASes announcing only one prefix: 6130
Transit ASes present in the Internet Routing Table: 2065
Transit-only ASes present in the Internet Routing Table: 70
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1203600064
Equivalent to 71 /8s, 189 /16s and 122 /24s
Percentage of available address space announced: 32.5
Percentage of allocated address space announced: 58.0
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56677
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22075
Total APNIC prefixes after maximum aggregation: 12672
Prefixes being announced from the APNIC address blocks: 20516
Unique aggregates announced from the APNIC address blocks: 12406
APNIC Region origin ASes present in the Internet Routing Table: 1866
APNIC Region origin ASes announcing only one prefix: 539
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: 15
Number of APNIC addresses announced to Internet: 117854880
Equivalent to 7 /8s, 6 /16s and 82 /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: 77672
Total ARIN prefixes after maximum aggregation: 48404
Prefixes being announced from the ARIN address blocks: 55411
Unique aggregates announced from the ARIN address blocks: 16314
ARIN Region origin ASes present in the Internet Routing Table: 8562
ARIN Region origin ASes announcing only one prefix: 2905
ARIN Region transit ASes present in the Internet Routing Table: 819
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196167200
Equivalent to 11 /8s, 177 /16s and 70 /24s
Percentage of available ARIN address space announced: 73.1
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: 22454
Total RIPE prefixes after maximum aggregation: 16246
Prefixes being announced from the RIPE address blocks: 18953
Unique aggregates announced from the RIPE address blocks: 12565
RIPE Region origin ASes present in the Internet Routing Table: 4744
RIPE Region origin ASes announcing only one prefix: 2592
RIPE Region transit ASes present in the Internet Routing Table: 840
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133949888
Equivalent to 7 /8s, 251 /16s and 233 /24s
Percentage of available RIPE address space announced: 72.6
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: 5382
Total LACNIC prefixes after maximum aggregation: 2284
Prefixes being announced from the LACNIC address blocks: 4836
Unique aggregates announced from the LACNIC address blocks: 3122
LACNIC Region origin ASes present in the Internet Routing Table: 342
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: 5.3
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12885504
Equivalent to 0 /8s, 196 /16s and 158 /24s
Percentage of available LACNIC address space announced: 38.4
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 1048 1053 739 Telstra Pty Ltd
4755 435 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 375 1912 351 SINET Japan
17557 346 23 147 Pakistan Telecom
703 330 370 263 UUNET
2764 309 326 277 connect.com.au pty ltd
7474 257 306 200 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
9583 241 37 22 Satyam Infoway Ltd.,
3786 238 777 205 DACOM Corporation
4134 233 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
9929 169 153 33 China Netcom Corp.
4538 168 1506 21 China Education and Research
9498 158 12 25 BHARTI BT INTERNET LTD.
4739 141 58 130 Commerical Internet eXchange
9238 139 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 1499 8782 1059 UUNET Technologies, Inc.
7018 1343 7149 932 AT&T
1239 962 2997 665 Sprint
3908 903 1550 482 Supernet, Inc.
7132 848 6604 236 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 640 160 8 Covad Communications
4323 608 526 175 Time Warner Communications, I
7843 601 391 237 Adelphia Corp.
6197 549 439 197 BellSouth Network Solutions,
1 541 1326 370 GENUITY
852 523 1124 416 Telus Advanced Communications
209 509 2192 303 Qwest
7066 489 204 258 Virginia Polytechnic Institut
6198 486 270 183 BellSouth Network Solutions,
705 479 190 303 UUNET Technologies, Inc.
20115 470 195 281 Charter Communications
690 442 64 292 Merit Network
4355 403 338 109 EarthLink, Inc.
2386 398 541 228 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1007 2157 613 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 290 1169 278 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
8220 232 402 220 COLT Internet - International
1257 227 309 185 SWIPnet Swedish IP Network
3215 211 736 120 France Telecom Transpac
5400 197 158 117 BT Ignite European Backbone
5515 186 795 150 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 153 108 150 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 111 796 32 Ibernet, Internet Access Netw
5511 99 179 76 France Telecom
2647 98 4129 41 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 98 106 ImpSat
7303 238 38 57 Telecom Argentina Stet-France
8151 218 334 115 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
11340 139 4 49 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 134 205 94 AVANTEL, S.A.
10620 121 8 33 TVCABLE BOGOTA
6147 93 70 21 Telefonica Del Peru
11992 87 8 36 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
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 640 632 Covad Communications
7132 848 612 Southwestern Bell Internet Se
4323 608 433 Time Warner Communications, I
3908 903 421 Supernet, Inc.
7018 1343 411 AT&T
702 1007 394 UUNET - Commercial IP service
189 689 377 Genuity
4755 435 365 Videsh Sanchar Nigam Ltd. Aut
7843 601 364 Adelphia Corp.
6197 549 352 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
1221 1048 309 Telstra Pty Ltd
6198 486 303 BellSouth Network Solutions,
27364 317 298 Armstrong Cable Services
1239 962 297 Sprint
4355 403 294 EarthLink, Inc.
6347 361 278 SAVVIS Communications Corpora
22909 282 268 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
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone 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 /8:17 /9:5 /10:8 /11:13 /12:54
/13:97 /14:260 /15:477 /16:7427 /17:1738 /18:3068
/19:8646 /20:8654 /21:6316 /22:9265 /23:10847 /24:69958
/25:177 /26:293 /27:183 /28:27 /29:11 /30:17
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 701 1007 UUNET - Commercial IP service
18566 634 640 Covad Communications
189 609 689 Genuity
3908 575 903 Supernet, Inc.
7018 470 1343 AT&T
701 436 1499 UUNET Technologies, Inc.
6197 416 549 BellSouth Network Solutions,
690 401 442 Merit Network
7066 387 489 Virginia Polytechnic Institut
6198 380 486 BellSouth Network Solutions,
1239 361 962 Sprint
7843 338 601 Adelphia Corp.
20115 321 470 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 211 541 GENUITY
3320 210 269 Deutsche Telekom AG
705 202 479 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:702 13:1 15:4 16:1 17:3
20:6 24:873 25:1 32:98 38:42 40:22
44:2 57:16 61:278 62:373 63:1879 64:1726
65:1985 66:2626 67:212 68:391 69:237 80:391
81:118 82:6 128:131 129:225 130:59 131:81
132:14 134:176 135:7 136:122 137:107 138:120
139:44 140:157 141:115 142:94 143:45 144:98
145:13 146:279 147:59 148:295 149:64 150:104
151:63 152:226 153:97 154:3 155:119 156:56
157:48 158:122 159:137 160:45 161:74 162:410
163:79 164:323 165:142 166:97 167:318 168:181
169:88 170:320 171:8 192:5338 193:2573 194:1989
195:1149 196:471 198:3557 199:2722 200:2993 202:3917
203:5268 204:2958 205:2040 206:2323 207:2428 208:2590
209:2881 210:862 211:362 212:1028 213:875 214:16
215:22 216:3277 217:690 218:95 219:68 220:98
221:8
End of report
