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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 20 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125895
Prefixes after maximum aggregation: 78627
Unique aggregates announced to Internet: 59198
Total ASes present in the Internet Routing Table: 15185
Origin-only ASes present in the Internet Routing Table: 13154
Origin ASes announcing only one prefix: 5968
Transit ASes present in the Internet Routing Table: 2031
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: 1230241088
Equivalent to 73 /8s, 83 /16s and 253 /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: 54698
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21283
Total APNIC prefixes after maximum aggregation: 12427
Prefixes being announced from the APNIC address blocks: 19715
Unique aggregates announced from the APNIC address blocks: 12032
APNIC Region origin ASes present in the Internet Routing Table: 1801
APNIC Region origin ASes announcing only one prefix: 527
APNIC Region transit ASes present in the Internet Routing Table: 302
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 113204768
Equivalent to 6 /8s, 191 /16s and 94 /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: 77556
Total ARIN prefixes after maximum aggregation: 48075
Prefixes being announced from the ARIN address blocks: 55654
Unique aggregates announced from the ARIN address blocks: 16527
ARIN Region origin ASes present in the Internet Routing Table: 8396
ARIN Region origin ASes announcing only one prefix: 2873
ARIN Region transit ASes present in the Internet Routing Table: 811
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191835904
Equivalent to 11 /8s, 111 /16s and 47 /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: 21702
Total RIPE prefixes after maximum aggregation: 15873
Prefixes being announced from the RIPE address blocks: 18215
Unique aggregates announced from the RIPE address blocks: 12040
RIPE Region origin ASes present in the Internet Routing Table: 4584
RIPE Region origin ASes announcing only one prefix: 2483
RIPE Region transit ASes present in the Internet Routing Table: 817
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 130782336
Equivalent to 7 /8s, 203 /16s and 148 /24s
Percentage of available RIPE address space announced: 70.9
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: 5351
Total LACNIC prefixes after maximum aggregation: 2252
Prefixes being announced from the LACNIC address blocks: 4762
Unique aggregates announced from the LACNIC address blocks: 2991
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 85
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: 12568832
Equivalent to 0 /8s, 191 /16s and 201 /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 1082 1103 769 Telstra Pty Ltd
4755 413 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 387 1976 364 SINET Japan
17557 376 27 150 Pakistan Telecom
703 366 377 294 UUNET
2764 319 342 282 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 270 291 203 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 213 2475 159 Korea Internet Exchange for "
9443 183 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 132 8 17 TATA ISP
4716 127 729 121 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1559 8919 1101 UUNET Technologies, Inc.
7018 1343 7215 931 AT&T
4151 1185 691 60 USDA
7132 964 6476 207 Southwestern Bell Internet Se
1239 943 3010 663 Sprint
3908 924 1573 477 Supernet, Inc.
189 706 341 289 Genuity
1 663 2649 452 GENUITY
7843 662 347 168 Adelphia Corp.
4323 595 525 174 Time Warner Communications, I
2386 584 506 274 AT&T Data Communications Serv
18566 577 160 8 Covad Communications
852 538 1155 423 Telus Advanced Communications
705 537 291 232 UUNET Technologies, Inc.
209 489 2104 295 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
6198 463 229 176 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 754 2175 640 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 309 1157 297 TeliaNet Sweden
3215 303 852 174 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 204 112 114 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 113 381 111 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 37 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 1185 1125 USDA
7132 964 757 Southwestern Bell Internet Se
18566 577 569 Covad Communications
7843 662 494 Adelphia Corp.
3908 924 447 Supernet, Inc.
4323 595 421 Time Warner Communications, I
189 706 417 Genuity
7018 1343 412 AT&T
4755 413 342 Videsh Sanchar Nigam Ltd. Aut
1221 1082 313 Telstra Pty Ltd
2386 584 310 AT&T Data Communications Serv
705 537 305 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 943 280 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
64414 RESERVED 209.173.52.0/24 7786 Lockheed Martin IMS
64414 RESERVED 209.173.53.0/24 7786 Lockheed Martin IMS
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 /15:472 /16:7415 /17:1678 /18:2972
/19:8406 /20:8382 /21:6042 /22:8953 /23:10672 /24:69944
/25:158 /26:217 /27:51 /28:26 /29:12 /30:23
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 629 706 Genuity
3908 580 924 Supernet, Inc.
18566 571 577 Covad Communications
7018 466 1343 AT&T
702 463 754 UUNET - Commercial IP service
701 431 1559 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 353 943 Sprint
20115 335 474 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 249 663 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:699 13:1 15:3 16:1 17:3 20:8
24:824 25:1 32:87 38:120 40:19 44:2
55:1 57:17 61:417 62:575 63:1867 64:1775
65:1931 66:2428 67:175 68:377 69:134 80:347
81:129 128:142 129:178 130:45 131:80 132:11
133:1 134:146 135:4 136:116 137:109 138:108
139:64 140:135 141:117 142:93 143:44 144:102
145:14 146:268 147:95 148:289 149:70 150:44
151:79 152:241 153:57 154:7 155:108 156:47
157:40 158:126 159:145 160:39 161:75 162:141
163:75 164:311 165:144 166:94 167:335 168:398
169:62 170:312 171:7 192:5300 193:2418 194:1979
195:1038 196:464 198:3568 199:3840 200:2960 202:3784
203:5217 204:3006 205:2062 206:2364 207:2383 208:2628
209:2841 210:787 211:332 212:942 213:809 214:20
215:23 216:3275 217:625 218:90 219:32 220:96
221:2
End of report
