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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 29 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125132
Prefixes after maximum aggregation: 78851
Unique aggregates announced to Internet: 59228
Total ASes present in the Internet Routing Table: 15256
Origin-only ASes present in the Internet Routing Table: 13232
Origin ASes announcing only one prefix: 5982
Transit ASes present in the Internet Routing Table: 2024
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: 255
Illegal AS announcements present in the Routing Table: 5
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1231404864
Equivalent to 73 /8s, 101 /16s and 191 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54898
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21656
Total APNIC prefixes after maximum aggregation: 12517
Prefixes being announced from the APNIC address blocks: 20052
Unique aggregates announced from the APNIC address blocks: 12063
APNIC Region origin ASes present in the Internet Routing Table: 1810
APNIC Region origin ASes announcing only one prefix: 524
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 113645728
Equivalent to 6 /8s, 198 /16s and 24 /24s
Percentage of available APNIC address space announced: 61.2
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: 76512
Total ARIN prefixes after maximum aggregation: 48146
Prefixes being announced from the ARIN address blocks: 54594
Unique aggregates announced from the ARIN address blocks: 16514
ARIN Region origin ASes present in the Internet Routing Table: 8437
ARIN Region origin ASes announcing only one prefix: 2882
ARIN Region transit ASes present in the Internet Routing Table: 816
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 19
Number of ARIN addresses announced to Internet: 192224512
Equivalent to 11 /8s, 117 /16s and 29 /24s
Percentage of available ARIN address space announced: 71.6
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: 21584
Total RIPE prefixes after maximum aggregation: 15918
Prefixes being announced from the RIPE address blocks: 18079
Unique aggregates announced from the RIPE address blocks: 12144
RIPE Region origin ASes present in the Internet Routing Table: 4607
RIPE Region origin ASes announcing only one prefix: 2492
RIPE Region transit ASes present in the Internet Routing Table: 806
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 131477504
Equivalent to 7 /8s, 214 /16s and 48 /24s
Percentage of available RIPE address space announced: 71.2
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: 5375
Total LACNIC prefixes after maximum aggregation: 2270
Prefixes being announced from the LACNIC address blocks: 4781
Unique aggregates announced from the LACNIC address blocks: 2977
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12600832
Equivalent to 0 /8s, 192 /16s and 70 /24s
Percentage of available LACNIC address space announced: 37.6
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 1075 1103 768 Telstra Pty Ltd
4755 417 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1911 352 SINET Japan
17557 373 26 150 Pakistan Telecom
703 347 373 276 UUNET
2764 313 341 278 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 270 290 203 Optus Communications Pty Ltd
17676 249 3846 18 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 235 2042 117 Data Communications Bureau
9583 225 34 17 Satyam Infoway Ltd.,
4766 212 2475 159 Korea Internet Exchange for "
9443 182 58 82 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 142 10 17 BHARTI BT INTERNET LTD.
4739 138 57 126 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 130 156 104 TANet2, sponsored by NSC, TAI
4716 128 745 122 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1561 8918 1099 UUNET Technologies, Inc.
7018 1336 7209 923 AT&T
7132 967 6475 207 Southwestern Bell Internet Se
1239 943 3018 663 Sprint
3908 923 1557 483 Supernet, Inc.
189 705 341 292 Genuity
7843 657 347 182 Adelphia Corp.
1 647 2590 440 GENUITY
4323 597 525 174 Time Warner Communications, I
18566 581 160 8 Covad Communications
2386 541 501 302 AT&T Data Communications Serv
852 536 1123 422 Telus Advanced Communications
705 504 271 329 UUNET Technologies, Inc.
209 491 2104 296 Qwest
6197 488 341 196 BellSouth Network Solutions,
7066 483 204 260 Virginia Polytechnic Institut
20115 463 194 285 Charter Communications
6198 461 229 177 BellSouth Network Solutions,
690 456 66 297 Merit Network
4355 400 322 110 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 751 2173 638 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 306 1173 293 TeliaNet Sweden
3215 302 852 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 225 311 187 SWIPnet Swedish IP Network
8220 223 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5400 204 121 115 BT Ignite European Backbone
5515 181 795 152 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 155 44 150 Romania Data Systems S.A.
3303 143 549 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 123 1299 113 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 113 365 111 Song Networks
3352 109 780 32 Ibernet, Internet Access Netw
2647 99 4129 39 SITA
5511 94 177 75 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 299 98 110 ImpSat
7303 244 37 59 Telecom Argentina Stet-France
8151 215 350 118 UniNet S.A. de C.V.
11172 169 66 41 Servicios Alestra S.A de C.V
6503 136 190 99 AVANTEL, S.A.
16814 135 9 17 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 99 70 21 Telefonica Del Peru
11992 87 8 37 Integrated Systems
8065 79 8 14 Empresas Publicas de Medellin
6535 74 5 23 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7738 63 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 967 760 Southwestern Bell Internet Se
18566 581 573 Covad Communications
7843 657 475 Adelphia Corp.
3908 923 440 Supernet, Inc.
4323 597 423 Time Warner Communications, I
7018 1336 413 AT&T
189 705 413 Genuity
4755 417 346 Videsh Sanchar Nigam Ltd. Aut
1221 1075 307 Telstra Pty Ltd
6197 488 292 BellSouth Network Solutions,
4355 400 290 EarthLink, Inc.
6347 364 285 SAVVIS Communications Corpora
6198 461 284 BellSouth Network Solutions,
1239 943 280 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 294 274 Armstrong Cable Services
22909 272 257 Comcast Cable Corporation
2386 541 239 AT&T Data Communications Serv
17676 249 231 XTAGE CORPORATION
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65516 PRIVATE 61.232.70.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.71.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.72.0/22 17621 China Netcom Corp.
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
64732 PRIVATE 202.38.166.0/23 9808 Guangdong Mobile Com
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
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
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.254.0/24 705 UUNET Technologies, Inc.
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:5 /10:8 /11:13 /12:52
/13:98 /14:254 /15:468 /16:7419 /17:1682 /18:2974
/19:8433 /20:8451 /21:6136 /22:9040 /23:10649 /24:68937
/25:154 /26:206 /27:52 /28:26 /29:12 /30:20
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 628 705 Genuity
3908 576 923 Supernet, Inc.
18566 575 581 Covad Communications
7018 462 1336 AT&T
702 460 751 UUNET - Commercial IP service
701 438 1561 UUNET Technologies, Inc.
7843 424 657 Adelphia Corp.
690 412 456 Merit Network
7066 380 483 Virginia Polytechnic Institut
6197 363 488 BellSouth Network Solutions,
6198 360 461 BellSouth Network Solutions,
1239 352 943 Sprint
2386 325 541 AT&T Data Communications Serv
20115 324 463 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 241 647 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 225 302 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:709 13:1 15:4 16:1 17:3 20:8
24:827 25:1 32:87 38:123 40:19 44:2
55:1 57:17 61:459 62:409 63:1882 64:1809
65:1936 66:2476 67:176 68:382 69:153 80:346
81:129 128:140 129:180 130:47 131:80 132:12
133:1 134:176 135:3 136:117 137:107 138:108
139:64 140:138 141:117 142:93 143:44 144:101
145:14 146:271 147:96 148:290 149:68 150:44
151:74 152:233 153:57 154:7 155:112 156:50
157:40 158:126 159:145 160:39 161:75 162:129
163:75 164:305 165:142 166:93 167:325 168:399
169:62 170:312 171:7 192:5312 193:2434 194:1957
195:1024 196:479 198:3568 199:2731 200:2981 202:3773
203:5250 204:2997 205:2039 206:2382 207:2365 208:2622
209:2834 210:813 211:336 212:1002 213:792 214:20
215:23 216:3278 217:621 218:88 219:41 220:95
221:2
End of report
