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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 02 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 126941
Prefixes after maximum aggregation: 78522
Unique aggregates announced to Internet: 59097
Total ASes present in the Internet Routing Table: 15120
Origin-only ASes present in the Internet Routing Table: 13121
Origin ASes announcing only one prefix: 5949
Transit ASes present in the Internet Routing Table: 1999
Transit-only ASes present in the Internet Routing Table: 72
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: 19
Number of addresses announced to Internet: 1228511744
Equivalent to 73 /8s, 57 /16s and 154 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55541
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21193
Total APNIC prefixes after maximum aggregation: 12319
Prefixes being announced from the APNIC address blocks: 19632
Unique aggregates announced from the APNIC address blocks: 11966
APNIC Region origin ASes present in the Internet Routing Table: 1786
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 302
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 112513760
Equivalent to 6 /8s, 180 /16s and 210 /24s
Percentage of available APNIC address space announced: 60.6
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: 78842
Total ARIN prefixes after maximum aggregation: 48180
Prefixes being announced from the ARIN address blocks: 56193
Unique aggregates announced from the ARIN address blocks: 16450
ARIN Region origin ASes present in the Internet Routing Table: 8372
ARIN Region origin ASes announcing only one prefix: 2858
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191775232
Equivalent to 11 /8s, 110 /16s and 66 /24s
Percentage of available ARIN address space announced: 71.4
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: 21602
Total RIPE prefixes after maximum aggregation: 15793
Prefixes being announced from the RIPE address blocks: 18228
Unique aggregates announced from the RIPE address blocks: 12080
RIPE Region origin ASes present in the Internet Routing Table: 4555
RIPE Region origin ASes announcing only one prefix: 2480
RIPE Region transit ASes present in the Internet Routing Table: 807
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 129731200
Equivalent to 7 /8s, 187 /16s and 138 /24s
Percentage of available RIPE address space announced: 70.3
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: 5303
Total LACNIC prefixes after maximum aggregation: 2230
Prefixes being announced from the LACNIC address blocks: 4747
Unique aggregates announced from the LACNIC address blocks: 2978
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 90
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12488704
Equivalent to 0 /8s, 190 /16s and 144 /24s
Percentage of available LACNIC address space announced: 37.2
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 1099 1104 787 Telstra Pty Ltd
4755 414 136 74 Videsh Sanchar Nigam Ltd. Aut
703 398 384 308 UUNET
2907 387 1992 364 SINET Japan
17557 371 26 143 Pakistan Telecom
2764 320 341 288 connect.com.au pty ltd
4814 297 85 23 China Telecom (Group)
7474 272 291 208 Optus Communications Pty Ltd
17676 245 3782 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 225 2022 115 Data Communications Bureau
9583 219 33 14 Satyam Infoway Ltd.,
4766 217 2478 163 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 179 259 57 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 18 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 2336 7471 942 AT&T
701 1565 8938 1104 UUNET Technologies, Inc.
4151 1004 691 60 USDA
1239 966 3114 684 Sprint
7132 961 6475 207 Southwestern Bell Internet Se
3908 918 1571 472 Supernet, Inc.
1 733 2734 465 GENUITY
19029 715 175 291 New Edge Networks
189 706 341 289 Genuity
7843 680 344 180 Adelphia Corp.
2386 609 503 329 AT&T Data Communications Serv
4323 584 514 169 Time Warner Communications, I
18566 549 144 5 Covad Communications
852 548 1110 431 Telus Advanced Communications
705 525 280 234 UUNET Technologies, Inc.
3561 508 2341 330 Cable & Wireless USA
209 497 2089 295 Qwest
690 488 71 315 Merit Network
7066 484 204 258 Virginia Polytechnic Institut
6197 478 340 196 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 772 2186 642 UUNET - Commercial IP service
3301 308 1173 298 TeliaNet Sweden
3215 305 852 175 France Telecom Transpac
3320 265 2004 226 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 227 328 189 SWIPnet Swedish IP Network
5400 205 112 114 BT Ignite European Backbone
8220 198 364 187 COLT Internet - International
719 193 307 125 LANLINK autonomous system
5515 187 779 160 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 17 3 This AS will be used to conne
8708 162 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 123 1299 112 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 102 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 289 98 105 ImpSat
7303 255 36 65 Telecom Argentina Stet-France
8151 220 335 122 UniNet S.A. de C.V.
11172 166 66 36 Servicios Alestra S.A de C.V
6503 141 206 101 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 96 3 30 Red Universitaria Nacional
6147 91 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
13999 74 36 8 Mega Cable S.A. de C.V.
6535 72 5 21 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
8065 70 6 15 Empresas Publicas de Medellin
1916 68 304 42 Fundacao de Amparo a Pesquisa
4270 67 18 9 Red de Interconexion Universi
11830 67 5 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1004 944 USDA
7132 961 754 Southwestern Bell Internet Se
18566 549 544 Covad Communications
7843 680 500 Adelphia Corp.
701 1565 461 UUNET Technologies, Inc.
3908 918 446 Supernet, Inc.
19029 715 424 New Edge Networks
189 706 417 Genuity
4323 584 415 Time Warner Communications, I
4755 414 340 Videsh Sanchar Nigam Ltd. Aut
1221 1099 312 Telstra Pty Ltd
705 525 291 UUNET Technologies, Inc.
6347 368 288 SAVVIS Communications Corpora
6198 460 285 BellSouth Network Solutions,
1239 966 282 Sprint
6197 478 282 BellSouth Network Solutions,
4355 381 281 EarthLink, Inc.
2386 609 280 AT&T Data Communications Serv
22927 288 275 TELEFONICA DE ARGENTINA
4814 297 274 China Telecom (Group)
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
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:17 /9:7 /10:8 /11:13 /12:51
/13:93 /14:254 /15:468 /16:7426 /17:1698 /18:3006
/19:8399 /20:8438 /21:6151 /22:9297 /23:10647 /24:70496
/25:158 /26:181 /27:47 /28:25 /29:13 /30:22
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7018 1070 2336 AT&T
189 627 706 Genuity
3908 573 918 Supernet, Inc.
19029 549 715 New Edge Networks
18566 543 549 Covad Communications
702 480 772 UUNET - Commercial IP service
7843 448 680 Adelphia Corp.
690 437 488 Merit Network
701 431 1565 UUNET Technologies, Inc.
7066 383 484 Virginia Polytechnic Institut
2386 372 609 AT&T Data Communications Serv
1239 363 966 Sprint
6198 362 460 BellSouth Network Solutions,
6197 356 478 BellSouth Network Solutions,
20115 340 474 Charter Communications
4814 284 297 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 257 733 GENUITY
3215 228 305 France Telecom Transpac
22927 226 288 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:747 13:1 15:4 17:3 20:8 24:814
25:1 32:87 38:121 40:19 44:2 55:1
57:16 61:441 62:539 63:1892 64:1569 65:1925
66:2399 67:164 68:367 69:120 80:358 81:153
128:148 129:178 130:44 131:81 132:11 133:2
134:152 135:4 136:113 137:106 138:109 139:66
140:151 141:110 142:97 143:44 144:103 145:17
146:268 147:94 148:280 149:73 150:44 151:78
152:244 153:55 154:2 155:108 156:46 157:42
158:125 159:148 160:36 161:74 162:146 163:75
164:307 165:140 166:94 167:332 168:397 169:57
170:316 171:7 192:5354 193:2458 194:2007 195:1051
196:461 198:3558 199:3730 200:2957 202:3778 203:5173
204:3053 205:2035 206:2434 207:2658 208:2620 209:3222
210:774 211:319 212:968 213:814 214:20 215:21
216:3315 217:637 218:89 219:21 220:94
End of report
