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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 20 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127161
Prefixes after maximum aggregation: 79795
Unique aggregates announced to Internet: 61016
Total ASes present in the Internet Routing Table: 15704
Origin-only ASes present in the Internet Routing Table: 13604
Origin ASes announcing only one prefix: 6203
Transit ASes present in the Internet Routing Table: 2100
Transit-only ASes present in the Internet Routing Table: 72
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: 1238917504
Equivalent to 73 /8s, 216 /16s and 97 /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: 56558
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22119
Total APNIC prefixes after maximum aggregation: 12662
Prefixes being announced from the APNIC address blocks: 20541
Unique aggregates announced from the APNIC address blocks: 12288
APNIC Region origin ASes present in the Internet Routing Table: 1883
APNIC Region origin ASes announcing only one prefix: 537
APNIC Region transit ASes present in the Internet Routing Table: 313
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120658816
Equivalent to 7 /8s, 49 /16s and 27 /24s
Percentage of available APNIC address space announced: 65.0
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: 77462
Total ARIN prefixes after maximum aggregation: 48503
Prefixes being announced from the ARIN address blocks: 55149
Unique aggregates announced from the ARIN address blocks: 17146
ARIN Region origin ASes present in the Internet Routing Table: 8603
ARIN Region origin ASes announcing only one prefix: 2953
ARIN Region transit ASes present in the Internet Routing Table: 836
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195763712
Equivalent to 11 /8s, 171 /16s and 30 /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: 22250
Total RIPE prefixes after maximum aggregation: 16347
Prefixes being announced from the RIPE address blocks: 18872
Unique aggregates announced from the RIPE address blocks: 12699
RIPE Region origin ASes present in the Internet Routing Table: 4798
RIPE Region origin ASes announcing only one prefix: 2616
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134721088
Equivalent to 8 /8s, 7 /16s and 174 /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: 5329
Total LACNIC prefixes after maximum aggregation: 2283
Prefixes being announced from the LACNIC address blocks: 4819
Unique aggregates announced from the LACNIC address blocks: 3113
LACNIC Region origin ASes present in the Internet Routing Table: 347
LACNIC Region origin ASes announcing only one prefix: 97
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: 13030144
Equivalent to 0 /8s, 198 /16s and 211 /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 1033 1037 725 Telstra Pty Ltd
4755 402 136 72 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 340 372 272 UUNET
4134 330 2210 114 Data Communications Bureau
2764 300 323 270 connect.com.au pty ltd
17557 298 26 139 Pakistan Telecom
7474 263 307 203 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 241 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
4538 169 1538 21 China Education and Research
9929 169 153 33 China Netcom Corp.
9498 168 13 21 BHARTI BT INTERNET LTD.
17642 158 41 119 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
9942 140 69 101 COMindico Australia
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1486 8778 1044 UUNET Technologies, Inc.
7018 1390 7183 974 AT&T
3908 921 1557 494 Supernet, Inc.
1239 890 3016 633 Sprint
189 662 354 321 Genuity
18566 662 160 8 Covad Communications
4323 624 551 179 Time Warner Communications, I
6197 566 387 244 BellSouth Network Solutions,
7843 542 390 187 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 518 2145 298 Qwest
6198 512 275 197 BellSouth Network Solutions,
7066 491 205 262 Virginia Polytechnic Institut
1 484 1095 312 GENUITY
705 483 192 303 UUNET Technologies, Inc.
3356 479 10740 400 Level 3 Communications, LLC
20115 477 197 287 Charter Communications
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 1168 278 TeliaNet Sweden
3320 261 1987 223 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
1257 241 312 190 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 212 736 119 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 186 779 149 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 236 39 54 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
15311 75 14 38 Telefonica Empresas
11830 74 6 29 Instituto Costarricense de El
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 624 445 Time Warner Communications, I
3908 921 427 Supernet, Inc.
7018 1390 416 AT&T
7843 542 355 Adelphia Corp.
189 662 341 Genuity
4755 402 330 Videsh Sanchar Nigam Ltd. Aut
6197 566 322 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 512 315 BellSouth Network Solutions,
1221 1033 308 Telstra Pty Ltd
4355 408 299 EarthLink, Inc.
27364 316 293 Armstrong Cable Services
6347 358 279 SAVVIS Communications Corpora
22909 286 269 Comcast Cable Corporation
1239 890 257 Sprint
25844 257 255 Skadden, Arps, Slate, Meagher
376 359 244 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 /15:474 /16:7406 /17:1744 /18:3083
/19:8396 /20:8663 /21:6355 /22:9356 /23:10823 /24:69756
/25:165 /26:218 /27:149 /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
189 585 662 Genuity
3908 582 921 Supernet, Inc.
7018 498 1390 AT&T
702 449 735 UUNET - Commercial IP service
701 438 1486 UUNET Technologies, Inc.
6197 432 566 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 311 316 Armstrong Cable Services
1239 299 890 Sprint
11305 281 358 Interland Incorporated
7843 270 542 Adelphia Corp.
25844 257 257 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 220 408 EarthLink, Inc.
3356 210 479 Level 3 Communications, LLC
209 209 518 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:849 25:1 32:97 38:44 40:23
44:2 55:1 57:14 61:297 62:386 63:1851
64:1754 65:1994 66:2652 67:230 68:385 69:249
80:402 81:121 82:10 128:163 129:171 130:46
131:82 132:13 134:173 135:7 136:125 137:118
138:120 139:45 140:141 141:118 142:94 143:44
144:89 145:13 146:281 147:61 148:300 149:73
150:120 151:67 152:217 153:57 154:3 155:122
156:58 157:46 158:118 159:135 160:45 161:73
162:406 163:78 164:330 165:141 166:96 167:313
168:182 169:95 170:325 171:8 192:5385 193:2475
194:1980 195:1153 196:453 198:3600 199:2729 200:2969
202:3880 203:5202 204:2954 205:2032 206:2315 207:2490
208:2553 209:2854 210:888 211:302 212:984 213:916
214:15 215:22 216:3236 217:690 218:95 219:74
220:101 221:11
End of report
