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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 30 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127592
Prefixes after maximum aggregation: 79608
Unique aggregates announced to Internet: 60013
Total ASes present in the Internet Routing Table: 15590
Origin-only ASes present in the Internet Routing Table: 13524
Origin ASes announcing only one prefix: 6134
Transit ASes present in the Internet Routing Table: 2066
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: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1220048224
Equivalent to 72 /8s, 184 /16s and 117 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 58.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56680
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22094
Total APNIC prefixes after maximum aggregation: 12665
Prefixes being announced from the APNIC address blocks: 20504
Unique aggregates announced from the APNIC address blocks: 12436
APNIC Region origin ASes present in the Internet Routing Table: 1869
APNIC Region origin ASes announcing only one prefix: 537
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: 118088384
Equivalent to 7 /8s, 9 /16s and 226 /24s
Percentage of available APNIC address space announced: 63.6
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: 48411
Prefixes being announced from the ARIN address blocks: 55396
Unique aggregates announced from the ARIN address blocks: 16317
ARIN Region origin ASes present in the Internet Routing Table: 8563
ARIN Region origin ASes announcing only one prefix: 2912
ARIN Region transit ASes present in the Internet Routing Table: 823
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 196282144
Equivalent to 11 /8s, 179 /16s and 7 /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: 22430
Total RIPE prefixes after maximum aggregation: 16246
Prefixes being announced from the RIPE address blocks: 18949
Unique aggregates announced from the RIPE address blocks: 12576
RIPE Region origin ASes present in the Internet Routing Table: 4745
RIPE Region origin ASes announcing only one prefix: 2591
RIPE Region transit ASes present in the Internet Routing Table: 838
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134000448
Equivalent to 7 /8s, 252 /16s and 175 /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: 5390
Total LACNIC prefixes after maximum aggregation: 2286
Prefixes being announced from the LACNIC address blocks: 4839
Unique aggregates announced from the LACNIC address blocks: 3123
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: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12888576
Equivalent to 0 /8s, 196 /16s and 170 /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 1047 1053 737 Telstra Pty Ltd
4755 443 136 69 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
17557 334 22 141 Pakistan Telecom
703 331 370 264 UUNET
2764 307 326 275 connect.com.au pty ltd
7474 259 306 200 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 238 777 205 DACOM Corporation
9583 236 37 22 Satyam Infoway Ltd.,
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
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 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 8781 1058 UUNET Technologies, Inc.
7018 1350 7150 938 AT&T
1239 963 2998 665 Sprint
3908 903 1550 483 Supernet, Inc.
7132 840 6555 229 Southwestern Bell Internet Se
189 671 371 322 Genuity
18566 643 160 8 Covad Communications
4323 610 526 177 Time Warner Communications, I
7843 603 391 238 Adelphia Corp.
6197 557 440 198 BellSouth Network Solutions,
1 533 1277 362 GENUITY
209 524 2194 305 Qwest
852 524 1124 416 Telus Advanced Communications
6198 489 270 185 BellSouth Network Solutions,
7066 488 204 258 Virginia Polytechnic Institut
705 480 190 304 UUNET Technologies, Inc.
20115 470 195 281 Charter Communications
690 435 63 287 Merit Network
3356 421 10606 343 Level 3 Communications, LLC
4355 400 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1013 2157 614 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 292 1169 280 TeliaNet Sweden
3320 262 1988 223 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 215 752 121 France Telecom Transpac
5515 186 795 150 Sonera Solution Autonomous Sy
786 178 1858 178 The JANET IP Service
5400 173 158 117 BT Ignite European Backbone
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
2647 99 4129 42 SITA
5511 99 179 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 298 98 107 ImpSat
7303 240 39 57 Telecom Argentina Stet-France
8151 217 318 114 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 89 8 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 840 611 Southwestern Bell Internet Se
4323 610 433 Time Warner Communications, I
3908 903 420 Supernet, Inc.
7018 1350 412 AT&T
702 1013 399 UUNET - Commercial IP service
4755 443 374 Videsh Sanchar Nigam Ltd. Aut
7843 603 365 Adelphia Corp.
6197 557 359 BellSouth Network Solutions,
189 671 349 Genuity
11305 358 320 Interland Incorporated
1221 1047 310 Telstra Pty Ltd
6198 489 304 BellSouth Network Solutions,
1239 963 298 Sprint
27364 317 298 Armstrong Cable Services
4355 400 291 EarthLink, Inc.
6347 360 279 SAVVIS Communications Corpora
22909 282 268 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 360 245 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
/13:97 /14:261 /15:478 /16:7415 /17:1736 /18:3070
/19:8642 /20:8672 /21:6308 /22:9295 /23:10841 /24:69919
/25:173 /26:291 /27:185 /28:27 /29:11 /30:46
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 706 1013 UUNET - Commercial IP service
18566 637 643 Covad Communications
189 591 671 Genuity
3908 574 903 Supernet, Inc.
7018 473 1350 AT&T
701 438 1499 UUNET Technologies, Inc.
6197 424 557 BellSouth Network Solutions,
690 394 435 Merit Network
7066 386 488 Virginia Polytechnic Institut
6198 382 489 BellSouth Network Solutions,
1239 361 963 Sprint
7843 340 603 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 216 400 EarthLink, Inc.
1 211 533 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 24:869 25:1 32:98 38:42 40:23
44:2 57:15 61:280 62:366 63:1887 64:1724
65:1990 66:2627 67:212 68:396 69:237 80:398
81:118 82:6 128:130 129:225 130:57 131:81
132:14 134:174 135:7 136:122 137:118 138:120
139:44 140:157 141:115 142:94 143:44 144:101
145:13 146:283 147:59 148:298 149:64 150:105
151:62 152:219 153:97 154:3 155:119 156:56
157:42 158:124 159:137 160:45 161:75 162:410
163:79 164:321 165:142 166:97 167:319 168:181
169:88 170:319 171:8 192:5337 193:2579 194:1982
195:1130 196:472 198:3566 199:2725 200:2998 202:3903
203:5269 204:2959 205:2037 206:2320 207:2420 208:2575
209:2884 210:868 211:362 212:1023 213:898 214:16
215:22 216:3265 217:691 218:96 219:67 220:64
221:8
End of report
