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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 12 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127777
Prefixes after maximum aggregation: 79942
Unique aggregates announced to Internet: 60910
Total ASes present in the Internet Routing Table: 15673
Origin-only ASes present in the Internet Routing Table: 13582
Origin ASes announcing only one prefix: 6175
Transit ASes present in the Internet Routing Table: 2091
Transit-only ASes present in the Internet Routing Table: 69
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: 1238167936
Equivalent to 73 /8s, 204 /16s and 241 /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: 56634
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22267
Total APNIC prefixes after maximum aggregation: 12722
Prefixes being announced from the APNIC address blocks: 20689
Unique aggregates announced from the APNIC address blocks: 12350
APNIC Region origin ASes present in the Internet Routing Table: 1879
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 311
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 119987584
Equivalent to 7 /8s, 38 /16s and 221 /24s
Percentage of available APNIC address space announced: 64.6
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: 77786
Total ARIN prefixes after maximum aggregation: 48612
Prefixes being announced from the ARIN address blocks: 55507
Unique aggregates announced from the ARIN address blocks: 17094
ARIN Region origin ASes present in the Internet Routing Table: 8599
ARIN Region origin ASes announcing only one prefix: 2945
ARIN Region transit ASes present in the Internet Routing Table: 834
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195515136
Equivalent to 11 /8s, 167 /16s and 83 /24s
Percentage of available ARIN address space announced: 72.8
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: 22365
Total RIPE prefixes after maximum aggregation: 16336
Prefixes being announced from the RIPE address blocks: 18968
Unique aggregates announced from the RIPE address blocks: 12662
RIPE Region origin ASes present in the Internet Routing Table: 4779
RIPE Region origin ASes announcing only one prefix: 2603
RIPE Region transit ASes present in the Internet Routing Table: 848
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134579776
Equivalent to 8 /8s, 5 /16s and 134 /24s
Percentage of available RIPE address space announced: 72.9
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: 5358
Total LACNIC prefixes after maximum aggregation: 2272
Prefixes being announced from the LACNIC address blocks: 4843
Unique aggregates announced from the LACNIC address blocks: 3135
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 96
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12975360
Equivalent to 0 /8s, 197 /16s and 253 /24s
Percentage of available LACNIC address space announced: 38.7
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 401 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 349 SINET Japan
703 336 370 268 UUNET
4134 333 2146 114 Data Communications Bureau
17557 303 26 136 Pakistan Telecom
2764 301 323 270 connect.com.au pty ltd
7474 260 306 203 Optus Communications Pty Ltd
17676 252 3878 21 XTAGE CORPORATION
9583 241 37 20 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 238 2461 170 Korea Internet Exchange for "
9800 195 314 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 160 11 24 BHARTI BT INTERNET LTD.
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 1459 8778 1046 UUNET Technologies, Inc.
7018 1379 7172 962 AT&T
1239 938 3029 658 Sprint
3908 913 1539 489 Supernet, Inc.
7132 817 6604 237 Southwestern Bell Internet Se
189 670 371 324 Genuity
18566 654 160 8 Covad Communications
4323 620 551 177 Time Warner Communications, I
6197 565 387 245 BellSouth Network Solutions,
7843 558 400 215 Adelphia Corp.
209 523 2194 303 Qwest
852 523 1124 415 Telus Advanced Communications
1 509 1163 331 GENUITY
6198 501 271 190 BellSouth Network Solutions,
7066 489 205 260 Virginia Polytechnic Institut
705 482 192 303 UUNET Technologies, Inc.
20115 472 196 283 Charter Communications
3356 439 10699 366 Level 3 Communications, LLC
4355 405 339 111 EarthLink, Inc.
690 402 59 271 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 734 2139 610 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 291 1186 279 TeliaNet Sweden
3320 257 1987 219 Deutsche Telekom AG
8220 246 432 234 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
1257 231 309 187 SWIPnet Swedish IP Network
3215 212 736 120 France Telecom Transpac
5515 185 779 149 Sonera Solution Autonomous Sy
786 178 1874 178 The JANET IP Service
5400 168 157 119 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 141 540 138 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 376 120 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 111 812 33 Ibernet, Internet Access Netw
2647 100 4129 44 SITA
9051 88 6 35 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 290 98 106 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 219 334 117 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 125 8 31 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 86 8 31 Integrated Systems
6147 83 70 20 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
11830 75 5 31 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
13999 63 36 8 Mega Cable S.A. de C.V.
7984 59 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 654 646 Covad Communications
7132 817 580 Southwestern Bell Internet Se
4323 620 443 Time Warner Communications, I
3908 913 424 Supernet, Inc.
7018 1379 417 AT&T
189 670 346 Genuity
7843 558 343 Adelphia Corp.
4755 401 330 Videsh Sanchar Nigam Ltd. Aut
6197 565 320 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 501 311 BellSouth Network Solutions,
1221 1040 309 Telstra Pty Ltd
27364 316 297 Armstrong Cable Services
4355 405 294 EarthLink, Inc.
1239 938 280 Sprint
6347 359 280 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 358 243 Reseau Interordinateurs Scien
17676 252 231 XTAGE CORPORATION
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 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
192.200.200.0/24 3602 Sprint Canada, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:5 /10:7 /11:13 /12:56
/13:99 /14:263 /15:474 /16:7412 /17:1735 /18:3097
/19:8684 /20:8714 /21:6350 /22:9363 /23:10834 /24:69916
/25:169 /26:280 /27:172 /28:27 /29:12 /30:50
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 648 654 Covad Communications
189 592 670 Genuity
3908 582 913 Supernet, Inc.
7018 485 1379 AT&T
702 447 734 UUNET - Commercial IP service
6197 430 565 BellSouth Network Solutions,
701 405 1459 UUNET Technologies, Inc.
6198 392 501 BellSouth Network Solutions,
7066 386 489 Virginia Polytechnic Institut
690 362 402 Merit Network
1239 339 938 Sprint
20115 321 472 Charter Communications
27364 310 316 Armstrong Cable Services
7843 291 558 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
10753 223 228 XCOM Technologies, INC.
4355 219 405 EarthLink, Inc.
1 210 509 GENUITY
209 209 523 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:711 13:1 15:4 16:1 17:3
20:6 24:832 25:1 32:98 38:46 40:23
44:2 57:14 61:294 62:386 63:1871 64:1732
65:2017 66:2645 67:223 68:386 69:244 80:398
81:119 82:10 128:132 129:169 130:50 131:80
132:15 134:175 135:7 136:122 137:118 138:120
139:46 140:139 141:117 142:94 143:45 144:97
145:13 146:279 147:59 148:300 149:71 150:104
151:63 152:212 153:57 154:3 155:119 156:55
157:47 158:119 159:136 160:46 161:74 162:407
163:81 164:328 165:146 166:96 167:320 168:181
169:92 170:317 171:8 192:5414 193:2467 194:1986
195:1143 196:470 198:3605 199:2737 200:2997 202:3944
203:5214 204:2961 205:2039 206:2321 207:2427 208:2562
209:2895 210:894 211:305 212:1039 213:917 214:16
215:22 216:3243 217:684 218:102 219:77 220:97
221:10
End of report
