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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 17 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 126100
Prefixes after maximum aggregation: 78633
Unique aggregates announced to Internet: 59250
Total ASes present in the Internet Routing Table: 15179
Origin-only ASes present in the Internet Routing Table: 13149
Origin ASes announcing only one prefix: 5975
Transit ASes present in the Internet Routing Table: 2030
Transit-only ASes present in the Internet Routing Table: 70
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: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1230378560
Equivalent to 73 /8s, 86 /16s and 22 /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: 54797
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21344
Total APNIC prefixes after maximum aggregation: 12401
Prefixes being announced from the APNIC address blocks: 19789
Unique aggregates announced from the APNIC address blocks: 12056
APNIC Region origin ASes present in the Internet Routing Table: 1801
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: 113205536
Equivalent to 6 /8s, 191 /16s and 97 /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: 77670
Total ARIN prefixes after maximum aggregation: 48101
Prefixes being announced from the ARIN address blocks: 55732
Unique aggregates announced from the ARIN address blocks: 16547
ARIN Region origin ASes present in the Internet Routing Table: 8393
ARIN Region origin ASes announcing only one prefix: 2871
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: 191856128
Equivalent to 11 /8s, 111 /16s and 126 /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: 21728
Total RIPE prefixes after maximum aggregation: 15875
Prefixes being announced from the RIPE address blocks: 18235
Unique aggregates announced from the RIPE address blocks: 12029
RIPE Region origin ASes present in the Internet Routing Table: 4582
RIPE Region origin ASes announcing only one prefix: 2488
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: 19
Number of RIPE addresses announced to Internet: 130596480
Equivalent to 7 /8s, 200 /16s and 190 /24s
Percentage of available RIPE address space announced: 70.8
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: 5357
Total LACNIC prefixes after maximum aggregation: 2256
Prefixes being announced from the LACNIC address blocks: 4770
Unique aggregates announced from the LACNIC address blocks: 3001
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12575744
Equivalent to 0 /8s, 191 /16s and 228 /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 1075 1103 762 Telstra Pty Ltd
4755 412 133 70 Videsh Sanchar Nigam Ltd. Aut
2907 386 1976 363 SINET Japan
17557 372 26 147 Pakistan Telecom
703 366 377 294 UUNET
2764 320 342 283 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 1564 8936 1102 UUNET Technologies, Inc.
7018 1332 7167 925 AT&T
4151 1165 691 60 USDA
7132 965 6476 208 Southwestern Bell Internet Se
1239 943 3010 663 Sprint
3908 923 1573 477 Supernet, Inc.
189 704 341 287 Genuity
1 681 2683 464 GENUITY
7843 662 347 175 Adelphia Corp.
4323 592 514 169 Time Warner Communications, I
2386 587 491 277 AT&T Data Communications Serv
18566 577 160 8 Covad Communications
705 539 291 234 UUNET Technologies, Inc.
852 538 1155 423 Telus Advanced Communications
3561 506 2342 325 Cable & Wireless USA
209 490 2104 295 Qwest
6197 486 341 195 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
702 755 2175 641 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 308 1157 296 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 220 335 122 UniNet S.A. de C.V.
11172 167 66 39 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 94 62 20 Telefonica Del Peru
11992 87 8 36 Integrated Systems
8065 76 8 16 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
11830 66 4 27 Instituto Costarricense de El
7738 65 186 12 Telecomunicacoes da Bahia S.A
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 1165 1105 USDA
7132 965 757 Southwestern Bell Internet Se
18566 577 569 Covad Communications
7843 662 487 Adelphia Corp.
3908 923 446 Supernet, Inc.
4323 592 423 Time Warner Communications, I
189 704 417 Genuity
7018 1332 407 AT&T
4755 412 342 Videsh Sanchar Nigam Ltd. Aut
1221 1075 313 Telstra Pty Ltd
2386 587 310 AT&T Data Communications Serv
705 539 305 UUNET Technologies, Inc.
4355 397 292 EarthLink, Inc.
6197 486 291 BellSouth Network Solutions,
6198 463 287 BellSouth Network Solutions,
6347 365 286 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
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 /14:253 /15:471 /16:7418 /17:1682 /18:2976
/19:8444 /20:8403 /21:6037 /22:9004 /23:10675 /24:70029
/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 579 923 Supernet, Inc.
18566 571 577 Covad Communications
7018 467 1332 AT&T
702 463 755 UUNET - Commercial IP service
701 435 1564 UUNET Technologies, Inc.
690 427 476 Merit Network
7843 425 662 Adelphia Corp.
7066 381 484 Virginia Polytechnic Institut
2386 368 587 AT&T Data Communications Serv
6197 362 486 BellSouth Network Solutions,
6198 362 463 BellSouth Network Solutions,
1239 352 943 Sprint
20115 335 474 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 252 681 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 226 302 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:702 13:1 15:4 16:1 17:3 20:8
24:826 25:1 32:87 38:121 40:19 44:2
55:1 57:17 61:444 62:580 63:1868 64:1771
65:1929 66:2428 67:172 68:379 69:129 80:346
81:128 128:146 129:178 130:45 131:78 132:11
133:1 134:146 135:4 136:114 137:109 138:108
139:64 140:135 141:117 142:98 143:44 144:99
145:14 146:269 147:95 148:289 149:72 150:44
151:79 152:241 153:57 154:7 155:108 156:46
157:40 158:127 159:147 160:36 161:75 162:141
163:78 164:305 165:142 166:94 167:335 168:398
169:62 170:306 171:7 192:5305 193:2441 194:1982
195:1047 196:463 198:3573 199:3821 200:2973 202:3786
203:5222 204:3011 205:2063 206:2376 207:2396 208:2626
209:2847 210:776 211:333 212:941 213:809 214:20
215:23 216:3274 217:624 218:90 219:31 220:96
221:2
End of report
