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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 18 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125903
Prefixes after maximum aggregation: 78547
Unique aggregates announced to Internet: 59185
Total ASes present in the Internet Routing Table: 15158
Origin-only ASes present in the Internet Routing Table: 13129
Origin ASes announcing only one prefix: 5962
Transit ASes present in the Internet Routing Table: 2029
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1229763648
Equivalent to 73 /8s, 76 /16s and 180 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54702
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21303
Total APNIC prefixes after maximum aggregation: 12399
Prefixes being announced from the APNIC address blocks: 19749
Unique aggregates announced from the APNIC address blocks: 12055
APNIC Region origin ASes present in the Internet Routing Table: 1797
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 301
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 113205792
Equivalent to 6 /8s, 191 /16s and 98 /24s
Percentage of available APNIC address space announced: 61.0
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: 77609
Total ARIN prefixes after maximum aggregation: 48049
Prefixes being announced from the ARIN address blocks: 55680
Unique aggregates announced from the ARIN address blocks: 16513
ARIN Region origin ASes present in the Internet Routing Table: 8384
ARIN Region origin ASes announcing only one prefix: 2865
ARIN Region transit ASes present in the Internet Routing Table: 808
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191847424
Equivalent to 11 /8s, 111 /16s and 92 /24s
Percentage of available ARIN address space announced: 71.5
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: 21643
Total RIPE prefixes after maximum aggregation: 15853
Prefixes being announced from the RIPE address blocks: 18168
Unique aggregates announced from the RIPE address blocks: 12017
RIPE Region origin ASes present in the Internet Routing Table: 4573
RIPE Region origin ASes announcing only one prefix: 2479
RIPE Region transit ASes present in the Internet Routing Table: 818
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 130549632
Equivalent to 7 /8s, 200 /16s and 7 /24s
Percentage of available RIPE address space announced: 70.7
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: 5347
Total LACNIC prefixes after maximum aggregation: 2246
Prefixes being announced from the LACNIC address blocks: 4761
Unique aggregates announced from the LACNIC address blocks: 2993
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12577024
Equivalent to 0 /8s, 191 /16s and 233 /24s
Percentage of available LACNIC address space announced: 37.5
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 1081 1103 768 Telstra Pty Ltd
4755 412 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 386 1976 363 SINET Japan
17557 374 26 148 Pakistan Telecom
703 366 377 294 UUNET
2764 319 342 282 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 271 291 204 Optus Communications Pty Ltd
17676 247 3814 19 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 228 2042 116 Data Communications Bureau
9583 223 34 17 Satyam Infoway Ltd.,
4766 214 2475 160 Korea Internet Exchange for "
9443 184 58 83 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
4739 137 57 125 Commerical Internet eXchange
9498 135 9 13 BHARTI BT INTERNET LTD.
9238 133 8 17 TATA ISP
4716 128 729 122 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1561 8920 1102 UUNET Technologies, Inc.
7018 1339 7216 932 AT&T
4151 1161 689 60 USDA
7132 965 6476 208 Southwestern Bell Internet Se
1239 941 3010 661 Sprint
3908 923 1572 476 Supernet, Inc.
189 704 341 287 Genuity
1 666 2650 455 GENUITY
7843 662 347 175 Adelphia Corp.
4323 592 514 169 Time Warner Communications, I
2386 584 491 275 AT&T Data Communications Serv
18566 577 160 8 Covad Communications
705 538 291 233 UUNET Technologies, Inc.
852 538 1155 423 Telus Advanced Communications
3561 506 2344 322 Cable & Wireless USA
209 487 2104 293 Qwest
6197 487 341 196 BellSouth Network Solutions,
7066 484 204 260 Virginia Polytechnic Institut
690 476 68 315 Merit Network
20115 474 195 288 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 756 2175 642 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 309 1157 297 TeliaNet Sweden
3215 302 836 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
8220 222 384 210 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5400 203 112 114 BT Ignite European Backbone
5515 182 795 153 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 156 44 149 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
2856 122 1299 112 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 113 383 110 Song Networks
3352 107 748 30 Ibernet, Internet Access Netw
2647 99 4129 39 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 98 107 ImpSat
7303 255 36 64 Telecom Argentina Stet-France
8151 208 334 115 UniNet S.A. de C.V.
11172 169 66 41 Servicios Alestra S.A de C.V
6503 139 205 99 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 95 62 20 Telefonica Del Peru
11992 87 8 36 Integrated Systems
8065 80 8 14 Empresas Publicas de Medellin
4270 75 18 10 Red de Interconexion Universi
6535 74 5 23 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
7738 66 186 12 Telecomunicacoes da Bahia S.A
11830 66 4 27 Instituto Costarricense de El
7927 65 5 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1161 1101 USDA
7132 965 757 Southwestern Bell Internet Se
18566 577 569 Covad Communications
7843 662 487 Adelphia Corp.
3908 923 447 Supernet, Inc.
4323 592 423 Time Warner Communications, I
189 704 417 Genuity
7018 1339 407 AT&T
4755 412 341 Videsh Sanchar Nigam Ltd. Aut
1221 1081 313 Telstra Pty Ltd
2386 584 309 AT&T Data Communications Serv
705 538 305 UUNET Technologies, Inc.
4355 407 295 EarthLink, Inc.
6197 487 291 BellSouth Network Solutions,
6198 463 287 BellSouth Network Solutions,
6347 364 285 SAVVIS Communications Corpora
1239 941 280 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 294 274 Armstrong Cable Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
25060 UNALLOCATED 193.192.4.0/22 9186 ONITELECOM Autonomou
25060 UNALLOCATED 193.192.8.0/22 9186 ONITELECOM Autonomou
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 /12:51
/13:97 /14:254 /15:471 /16:7410 /17:1681 /18:2975
/19:8440 /20:8403 /21:6035 /22:8997 /23:10679 /24:69850
/25:160 /26:217 /27:52 /28:26 /29:12 /30:23
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 704 Genuity
3908 580 923 Supernet, Inc.
18566 571 577 Covad Communications
7018 467 1339 AT&T
702 463 756 UUNET - Commercial IP service
701 434 1561 UUNET Technologies, Inc.
690 427 476 Merit Network
7843 425 662 Adelphia Corp.
7066 381 484 Virginia Polytechnic Institut
2386 364 584 AT&T Data Communications Serv
6197 363 487 BellSouth Network Solutions,
6198 362 463 BellSouth Network Solutions,
1239 353 941 Sprint
20115 335 474 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 249 666 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 226 302 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:704 13:1 15:4 16:1 17:3 20:8
24:826 25:1 32:87 38:120 40:19 44:2
55:1 57:17 61:442 62:579 63:1865 64:1770
65:1929 66:2424 67:173 68:379 69:130 80:346
81:128 128:146 129:178 130:45 131:78 132:11
133:1 134:146 135:4 136:116 137:109 138:108
139:64 140:135 141:117 142:97 143:44 144:95
145:13 146:268 147:95 148:288 149:73 150:44
151:79 152:239 153:57 154:7 155:108 156:46
157:40 158:127 159:144 160:36 161:73 162:141
163:78 164:309 165:142 166:93 167:335 168:397
169:62 170:311 171:7 192:5301 193:2418 194:1968
195:1037 196:463 198:3569 199:3806 200:2957 202:3765
203:5220 204:3004 205:2052 206:2374 207:2395 208:2615
209:2847 210:773 211:326 212:937 213:803 214:20
215:23 216:3273 217:620 218:90 219:31 220:96
221:2
End of report
