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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 14 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127716
Prefixes after maximum aggregation: 79924
Unique aggregates announced to Internet: 60883
Total ASes present in the Internet Routing Table: 15687
Origin-only ASes present in the Internet Routing Table: 13591
Origin ASes announcing only one prefix: 6190
Transit ASes present in the Internet Routing Table: 2096
Transit-only ASes present in the Internet Routing Table: 71
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: 1238787712
Equivalent to 73 /8s, 214 /16s and 102 /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: 56561
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22238
Total APNIC prefixes after maximum aggregation: 12717
Prefixes being announced from the APNIC address blocks: 20651
Unique aggregates announced from the APNIC address blocks: 12334
APNIC Region origin ASes present in the Internet Routing Table: 1882
APNIC Region origin ASes announcing only one prefix: 534
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: 17
Number of APNIC addresses announced to Internet: 120287360
Equivalent to 7 /8s, 43 /16s and 112 /24s
Percentage of available APNIC address space announced: 64.8
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: 77824
Total ARIN prefixes after maximum aggregation: 48622
Prefixes being announced from the ARIN address blocks: 55522
Unique aggregates announced from the ARIN address blocks: 17084
ARIN Region origin ASes present in the Internet Routing Table: 8605
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: 195571968
Equivalent to 11 /8s, 168 /16s and 49 /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: 22281
Total RIPE prefixes after maximum aggregation: 16313
Prefixes being announced from the RIPE address blocks: 18908
Unique aggregates announced from the RIPE address blocks: 12650
RIPE Region origin ASes present in the Internet Routing Table: 4782
RIPE Region origin ASes announcing only one prefix: 2607
RIPE Region transit ASes present in the Internet Routing Table: 848
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134675008
Equivalent to 8 /8s, 6 /16s and 250 /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: 5372
Total LACNIC prefixes after maximum aggregation: 2272
Prefixes being announced from the LACNIC address blocks: 4860
Unique aggregates announced from the LACNIC address blocks: 3155
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: 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: 13013248
Equivalent to 0 /8s, 198 /16s and 145 /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 1041 1038 732 Telstra Pty Ltd
4755 402 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 375 1896 350 SINET Japan
703 337 372 270 UUNET
4134 334 2210 115 Data Communications Bureau
2764 300 323 270 connect.com.au pty ltd
17557 300 25 137 Pakistan Telecom
7474 262 306 202 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 164 11 19 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 1484 8778 1045 UUNET Technologies, Inc.
7018 1373 7155 960 AT&T
1239 917 3029 655 Sprint
3908 914 1539 489 Supernet, Inc.
7132 820 6604 239 Southwestern Bell Internet Se
189 674 371 321 Genuity
18566 659 160 8 Covad Communications
4323 619 551 177 Time Warner Communications, I
6197 564 387 245 BellSouth Network Solutions,
7843 558 403 207 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 520 2193 301 Qwest
6198 507 271 194 BellSouth Network Solutions,
7066 490 205 260 Virginia Polytechnic Institut
1 489 1097 316 GENUITY
705 481 192 303 UUNET Technologies, Inc.
20115 475 196 286 Charter Communications
3356 463 10755 388 Level 3 Communications, LLC
690 409 59 276 Merit Network
4355 405 339 111 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 736 2139 612 UUNET - Commercial IP service
3301 291 1186 279 TeliaNet Sweden
719 266 307 125 LANLINK autonomous system
3320 260 1987 222 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
1257 237 311 189 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 212 736 120 France Telecom Transpac
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 165 157 117 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 139 540 136 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 122 376 120 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 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 218 334 117 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 132 205 93 AVANTEL, S.A.
10620 126 8 32 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 32 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 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 60 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 659 651 Covad Communications
7132 820 581 Southwestern Bell Internet Se
4323 619 442 Time Warner Communications, I
3908 914 425 Supernet, Inc.
7018 1373 413 AT&T
189 674 353 Genuity
7843 558 351 Adelphia Corp.
4755 402 331 Videsh Sanchar Nigam Ltd. Aut
11305 358 320 Interland Incorporated
6197 564 319 BellSouth Network Solutions,
6198 507 313 BellSouth Network Solutions,
1221 1041 309 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 405 294 EarthLink, Inc.
6347 360 280 SAVVIS Communications Corpora
1239 917 262 Sprint
25844 258 256 Skadden, Arps, Slate, Meagher
22909 279 254 Comcast Cable Corporation
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 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 /15:472 /16:7413 /17:1735 /18:3091
/19:8690 /20:8739 /21:6350 /22:9380 /23:10826 /24:69882
/25:164 /26:250 /27:152 /28:27 /29:12 /30:49
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 653 659 Covad Communications
189 596 674 Genuity
3908 583 914 Supernet, Inc.
7018 483 1373 AT&T
702 449 736 UUNET - Commercial IP service
701 431 1484 UUNET Technologies, Inc.
6197 429 564 BellSouth Network Solutions,
6198 398 507 BellSouth Network Solutions,
7066 387 490 Virginia Polytechnic Institut
690 369 409 Merit Network
20115 324 475 Charter Communications
1239 316 917 Sprint
27364 311 317 Armstrong Cable Services
7843 288 558 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 219 405 EarthLink, Inc.
209 209 520 Qwest
1 207 489 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:713 13:1 15:4 16:1 17:3
20:6 24:857 25:1 32:98 38:46 40:23
44:2 57:14 61:291 62:401 63:1856 64:1736
65:2017 66:2646 67:226 68:384 69:245 80:396
81:121 82:10 128:131 129:171 130:50 131:80
132:13 134:174 135:7 136:122 137:117 138:121
139:46 140:140 141:117 142:93 143:45 144:92
145:13 146:278 147:59 148:300 149:73 150:117
151:63 152:219 153:57 154:3 155:121 156:56
157:48 158:118 159:136 160:46 161:74 162:406
163:81 164:329 165:139 166:96 167:313 168:181
169:91 170:325 171:8 192:5408 193:2471 194:1985
195:1151 196:471 198:3606 199:2739 200:3012 202:3950
203:5205 204:2960 205:2035 206:2324 207:2426 208:2562
209:2861 210:893 211:304 212:989 213:911 214:16
215:22 216:3246 217:682 218:101 219:75 220:98
221:10
End of report
