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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 21 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127289
Prefixes after maximum aggregation: 79855
Unique aggregates announced to Internet: 61191
Total ASes present in the Internet Routing Table: 15709
Origin-only ASes present in the Internet Routing Table: 13614
Origin ASes announcing only one prefix: 6208
Transit ASes present in the Internet Routing Table: 2095
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: 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: 1239471488
Equivalent to 73 /8s, 224 /16s and 213 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56476
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22187
Total APNIC prefixes after maximum aggregation: 12680
Prefixes being announced from the APNIC address blocks: 20620
Unique aggregates announced from the APNIC address blocks: 12372
APNIC Region origin ASes present in the Internet Routing Table: 1887
APNIC Region origin ASes announcing only one prefix: 543
APNIC Region transit ASes present in the Internet Routing Table: 314
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120797056
Equivalent to 7 /8s, 51 /16s and 55 /24s
Percentage of available APNIC address space announced: 65.1
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: 77531
Total ARIN prefixes after maximum aggregation: 48558
Prefixes being announced from the ARIN address blocks: 55302
Unique aggregates announced from the ARIN address blocks: 17211
ARIN Region origin ASes present in the Internet Routing Table: 8606
ARIN Region origin ASes announcing only one prefix: 2955
ARIN Region transit ASes present in the Internet Routing Table: 836
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 195787264
Equivalent to 11 /8s, 171 /16s and 122 /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: 22244
Total RIPE prefixes after maximum aggregation: 16329
Prefixes being announced from the RIPE address blocks: 18862
Unique aggregates announced from the RIPE address blocks: 12661
RIPE Region origin ASes present in the Internet Routing Table: 4798
RIPE Region origin ASes announcing only one prefix: 2613
RIPE Region transit ASes present in the Internet Routing Table: 847
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134758208
Equivalent to 8 /8s, 8 /16s and 63 /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: 5326
Total LACNIC prefixes after maximum aggregation: 2288
Prefixes being announced from the LACNIC address blocks: 4819
Unique aggregates announced from the LACNIC address blocks: 3129
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: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13038592
Equivalent to 0 /8s, 198 /16s and 244 /24s
Percentage of available LACNIC address space announced: 38.9
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 1038 1037 728 Telstra Pty Ltd
4755 405 135 72 Videsh Sanchar Nigam Ltd. Aut
2907 375 1911 350 SINET Japan
703 340 372 272 UUNET
4134 331 2210 114 Data Communications Bureau
2764 300 323 270 connect.com.au pty ltd
17557 300 26 136 Pakistan Telecom
7474 263 307 203 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
9498 169 13 25 BHARTI BT INTERNET LTD.
9929 169 153 33 China Netcom Corp.
4538 168 1538 21 China Education and Research
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 1485 8762 1043 UUNET Technologies, Inc.
7018 1398 7200 980 AT&T
3908 921 1557 495 Supernet, Inc.
1239 892 3016 634 Sprint
189 672 451 331 Genuity
18566 663 160 8 Covad Communications
4323 623 551 179 Time Warner Communications, I
6197 567 387 244 BellSouth Network Solutions,
7843 567 409 206 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 519 2145 299 Qwest
6198 513 277 198 BellSouth Network Solutions,
7066 488 205 262 Virginia Polytechnic Institut
1 483 1079 311 GENUITY
705 480 192 300 UUNET Technologies, Inc.
20115 476 196 286 Charter Communications
3356 472 10660 391 Level 3 Communications, LLC
7132 410 6608 240 Southwestern Bell Internet Se
690 408 59 275 Merit Network
4355 404 339 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 737 2141 612 UUNET - Commercial IP service
3301 289 1168 277 TeliaNet Sweden
3320 262 1987 224 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
1257 239 311 188 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 185 779 148 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 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
9051 88 6 35 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 312 98 113 ImpSat
7303 238 39 56 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 67 6 40 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 663 655 Covad Communications
4323 623 444 Time Warner Communications, I
3908 921 426 Supernet, Inc.
7018 1398 418 AT&T
7843 567 361 Adelphia Corp.
189 672 341 Genuity
4755 405 333 Videsh Sanchar Nigam Ltd. Aut
6197 567 323 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 513 315 BellSouth Network Solutions,
1221 1038 310 Telstra Pty Ltd
4355 404 295 EarthLink, Inc.
27364 316 293 Armstrong Cable Services
6347 358 279 SAVVIS Communications Corpora
22909 286 269 Comcast Cable Corporation
1239 892 258 Sprint
25844 257 255 Skadden, Arps, Slate, Meagher
376 357 242 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
7066 488 226 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 /16:7412 /17:1746 /18:3074
/19:8401 /20:8675 /21:6366 /22:9397 /23:10828 /24:69811
/25:165 /26:217 /27:150 /28:26 /29:12 /30:51
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 657 663 Covad Communications
189 587 672 Genuity
3908 582 921 Supernet, Inc.
7018 498 1398 AT&T
702 449 737 UUNET - Commercial IP service
701 437 1485 UUNET Technologies, Inc.
6197 432 567 BellSouth Network Solutions,
6198 404 513 BellSouth Network Solutions,
7066 384 488 Virginia Polytechnic Institut
690 368 408 Merit Network
20115 326 476 Charter Communications
27364 311 316 Armstrong Cable Services
1239 301 892 Sprint
7843 292 567 Adelphia Corp.
11305 281 358 Interland Incorporated
10753 262 267 XCOM Technologies, INC.
25844 257 257 Skadden, Arps, Slate, Meagher
4355 217 404 EarthLink, Inc.
3356 210 472 Level 3 Communications, LLC
209 209 519 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:862 25:1 32:85 38:43 40:23
44:2 55:1 57:14 61:283 62:395 63:1854
64:1759 65:2003 66:2655 67:235 68:390 69:250
80:395 81:119 82:10 128:160 129:171 130:46
131:77 132:13 134:165 135:7 136:125 137:118
138:95 139:45 140:129 141:118 142:94 143:45
144:89 145:13 146:280 147:61 148:301 149:73
150:120 151:67 152:218 153:57 154:3 155:122
156:59 157:47 158:118 159:136 160:45 161:75
162:369 163:78 164:324 165:141 166:96 167:313
168:182 169:95 170:325 171:8 192:5399 193:2461
194:1965 195:1167 196:467 198:3600 199:2738 200:2972
202:3943 203:5214 204:2970 205:2030 206:2331 207:2501
208:2551 209:2844 210:883 211:302 212:987 213:912
214:14 215:21 216:3242 217:685 218:98 219:75
220:102 221:11
End of report
