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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 19 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127202
Prefixes after maximum aggregation: 79869
Unique aggregates announced to Internet: 60982
Total ASes present in the Internet Routing Table: 15696
Origin-only ASes present in the Internet Routing Table: 13595
Origin ASes announcing only one prefix: 6200
Transit ASes present in the Internet Routing Table: 2101
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 26
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: 15
Number of addresses announced to Internet: 1238852224
Equivalent to 73 /8s, 215 /16s and 98 /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: 56568
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22060
Total APNIC prefixes after maximum aggregation: 12665
Prefixes being announced from the APNIC address blocks: 20481
Unique aggregates announced from the APNIC address blocks: 12252
APNIC Region origin ASes present in the Internet Routing Table: 1880
APNIC Region origin ASes announcing only one prefix: 533
APNIC Region transit ASes present in the Internet Routing Table: 315
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120468352
Equivalent to 7 /8s, 46 /16s and 51 /24s
Percentage of available APNIC address space announced: 64.9
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: 77505
Total ARIN prefixes after maximum aggregation: 48589
Prefixes being announced from the ARIN address blocks: 55203
Unique aggregates announced from the ARIN address blocks: 17091
ARIN Region origin ASes present in the Internet Routing Table: 8605
ARIN Region origin ASes announcing only one prefix: 2952
ARIN Region transit ASes present in the Internet Routing Table: 838
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195756288
Equivalent to 11 /8s, 171 /16s and 1 /24s
Percentage of available ARIN address space announced: 72.9
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: 22258
Total RIPE prefixes after maximum aggregation: 16336
Prefixes being announced from the RIPE address blocks: 18892
Unique aggregates announced from the RIPE address blocks: 12690
RIPE Region origin ASes present in the Internet Routing Table: 4794
RIPE Region origin ASes announcing only one prefix: 2616
RIPE Region transit ASes present in the Internet Routing Table: 849
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134644032
Equivalent to 8 /8s, 6 /16s and 129 /24s
Percentage of available RIPE address space announced: 73.0
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: 5378
Total LACNIC prefixes after maximum aggregation: 2279
Prefixes being announced from the LACNIC address blocks: 4865
Unique aggregates announced from the LACNIC address blocks: 3150
LACNIC Region origin ASes present in the Internet Routing Table: 348
LACNIC Region origin ASes announcing only one prefix: 99
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13029120
Equivalent to 0 /8s, 198 /16s and 207 /24s
Percentage of available LACNIC address space announced: 38.8
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 1040 1038 731 Telstra Pty Ltd
4755 401 135 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 339 372 271 UUNET
4134 334 2210 115 Data Communications Bureau
2764 302 323 272 connect.com.au pty ltd
17557 300 26 136 Pakistan Telecom
7474 261 306 201 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 242 37 21 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 238 2461 170 Korea Internet Exchange for "
9800 198 326 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9929 169 153 33 China Netcom Corp.
4538 168 1538 21 China Education and Research
17642 154 41 115 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 131 729 125 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1483 8762 1041 UUNET Technologies, Inc.
7018 1389 7200 976 AT&T
3908 920 1541 495 Supernet, Inc.
1239 888 3000 631 Sprint
189 669 371 324 Genuity
18566 662 160 8 Covad Communications
4323 623 551 179 Time Warner Communications, I
6197 567 387 244 BellSouth Network Solutions,
7843 566 409 207 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 520 2177 300 Qwest
6198 512 275 197 BellSouth Network Solutions,
7066 491 205 262 Virginia Polytechnic Institut
1 484 1095 311 GENUITY
705 483 192 303 UUNET Technologies, Inc.
20115 477 197 287 Charter Communications
3356 470 10756 394 Level 3 Communications, LLC
7132 410 6608 240 Southwestern Bell Internet Se
690 408 59 275 Merit Network
4355 408 339 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 735 2139 611 UUNET - Commercial IP service
3301 290 1170 278 TeliaNet Sweden
3320 261 1987 223 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
1257 239 311 189 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 214 752 121 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 175 175 127 BT Ignite European Backbone
8708 155 110 152 Romania Data Systems S.A.
3303 139 540 136 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 121 360 119 Song Networks
3269 116 819 63 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 312 98 113 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 220 334 116 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 152 10 18 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 36 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
11830 74 6 29 Instituto Costarricense de El
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 57 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 662 654 Covad Communications
4323 623 444 Time Warner Communications, I
3908 920 425 Supernet, Inc.
7018 1389 413 AT&T
7843 566 359 Adelphia Corp.
189 669 345 Genuity
4755 401 330 Videsh Sanchar Nigam Ltd. Aut
6197 567 323 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 512 315 BellSouth Network Solutions,
1221 1040 309 Telstra Pty Ltd
4355 408 299 EarthLink, Inc.
27364 317 298 Armstrong Cable Services
6347 359 279 SAVVIS Communications Corpora
22909 285 269 Comcast Cable Corporation
1239 888 257 Sprint
25844 257 255 Skadden, Arps, Slate, Meagher
376 358 243 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
7066 491 229 Virginia Polytechnic Institut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
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
192.228.80.0/24 30122 INTERNET SOFTWARE CONSORTIUM,
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:4 /10:6 /11:12 /12:55
/13:98 /14:263 /15:473 /16:7409 /17:1745 /18:3083
/19:8402 /20:8667 /21:6359 /22:9358 /23:10833 /24:69802
/25:159 /26:211 /27:128 /28:26 /29:12 /30:51
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 656 662 Covad Communications
189 591 669 Genuity
3908 582 920 Supernet, Inc.
7018 498 1389 AT&T
702 448 735 UUNET - Commercial IP service
701 438 1483 UUNET Technologies, Inc.
6197 432 567 BellSouth Network Solutions,
6198 403 512 BellSouth Network Solutions,
7066 387 491 Virginia Polytechnic Institut
690 368 408 Merit Network
20115 326 477 Charter Communications
27364 311 317 Armstrong Cable Services
1239 299 888 Sprint
7843 291 566 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 257 257 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 220 408 EarthLink, Inc.
209 209 520 Qwest
705 206 483 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:715 13:1 15:4 16:1 17:3
20:6 24:867 25:1 32:97 38:44 40:23
44:2 55:1 57:14 61:287 62:396 63:1853
64:1759 65:1997 66:2646 67:231 68:386 69:248
80:398 81:123 82:10 128:162 129:169 130:47
131:80 132:13 134:174 135:7 136:122 137:118
138:120 139:46 140:141 141:118 142:94 143:44
144:88 145:13 146:280 147:61 148:302 149:72
150:120 151:63 152:219 153:57 154:3 155:121
156:58 157:48 158:118 159:136 160:45 161:71
162:405 163:77 164:330 165:140 166:95 167:313
168:181 169:95 170:325 171:8 192:5391 193:2469
194:1981 195:1161 196:469 198:3587 199:2737 200:3021
202:3840 203:5183 204:2958 205:2032 206:2322 207:2487
208:2552 209:2854 210:893 211:303 212:991 213:916
214:16 215:22 216:3232 217:689 218:101 219:73
220:98 221:10
End of report
