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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 25 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125119
Prefixes after maximum aggregation: 78362
Unique aggregates announced to Internet: 59062
Total ASes present in the Internet Routing Table: 15081
Origin-only ASes present in the Internet Routing Table: 13084
Origin ASes announcing only one prefix: 5927
Transit ASes present in the Internet Routing Table: 1997
Transit-only ASes present in the Internet Routing Table: 73
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1225635584
Equivalent to 73 /8s, 13 /16s and 183 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54285
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21170
Total APNIC prefixes after maximum aggregation: 12304
Prefixes being announced from the APNIC address blocks: 19604
Unique aggregates announced from the APNIC address blocks: 11953
APNIC Region origin ASes present in the Internet Routing Table: 1786
APNIC Region origin ASes announcing only one prefix: 524
APNIC Region transit ASes present in the Internet Routing Table: 298
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 110586336
Equivalent to 6 /8s, 151 /16s and 105 /24s
Percentage of available APNIC address space announced: 59.6
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: 77168
Total ARIN prefixes after maximum aggregation: 48050
Prefixes being announced from the ARIN address blocks: 55267
Unique aggregates announced from the ARIN address blocks: 16473
ARIN Region origin ASes present in the Internet Routing Table: 8359
ARIN Region origin ASes announcing only one prefix: 2855
ARIN Region transit ASes present in the Internet Routing Table: 793
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191272192
Equivalent to 11 /8s, 102 /16s and 149 /24s
Percentage of available ARIN address space announced: 71.3
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: 21454
Total RIPE prefixes after maximum aggregation: 15780
Prefixes being announced from the RIPE address blocks: 18001
Unique aggregates announced from the RIPE address blocks: 12064
RIPE Region origin ASes present in the Internet Routing Table: 4530
RIPE Region origin ASes announcing only one prefix: 2460
RIPE Region transit ASes present in the Internet Routing Table: 807
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129279104
Equivalent to 7 /8s, 180 /16s and 164 /24s
Percentage of available RIPE address space announced: 70.1
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: 5323
Total LACNIC prefixes after maximum aggregation: 2228
Prefixes being announced from the LACNIC address blocks: 4740
Unique aggregates announced from the LACNIC address blocks: 2927
LACNIC Region origin ASes present in the Internet Routing Table: 335
LACNIC Region origin ASes announcing only one prefix: 88
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 12448000
Equivalent to 0 /8s, 189 /16s and 241 /24s
Percentage of available LACNIC address space announced: 37.1
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 1103 1104 791 Telstra Pty Ltd
4755 412 136 76 Videsh Sanchar Nigam Ltd. Aut
703 397 381 311 UUNET
2907 385 1976 362 SINET Japan
17557 374 28 137 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 289 85 23 China Telecom (Group)
7474 270 276 206 Optus Communications Pty Ltd
17676 243 3750 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 226 2022 115 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 211 2078 157 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 248 54 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
9768 127 384 64 Korea Telecom
4716 126 729 120 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1578 8923 1112 UUNET Technologies, Inc.
7018 1351 7174 930 AT&T
1239 964 3099 682 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 920 1570 471 Supernet, Inc.
4151 903 691 60 USDA
1 732 2749 465 GENUITY
7843 729 407 182 Adelphia Corp.
189 704 341 289 Genuity
4323 575 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 545 144 5 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 515 483 272 AT&T Data Communications Serv
3561 513 2357 335 Cable & Wireless USA
690 494 72 312 Merit Network
209 491 2120 293 Qwest
6197 481 340 196 BellSouth Network Solutions,
7066 481 204 257 Virginia Polytechnic Institut
20115 476 189 296 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 774 2186 644 UUNET - Commercial IP service
3215 310 851 175 France Telecom Transpac
3301 308 1173 298 TeliaNet Sweden
3320 265 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 226 327 189 SWIPnet Swedish IP Network
5400 204 112 114 BT Ignite European Backbone
8220 199 364 188 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 120 1298 110 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 96 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 254 36 67 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
6147 91 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
11340 82 2 26 Red Universitaria Nacional
1916 75 306 45 Fundacao de Amparo a Pesquisa
8065 75 6 15 Empresas Publicas de Medellin
13999 74 36 8 Mega Cable S.A. de C.V.
6535 73 5 22 Chilesat Servicios Empresari
15311 72 28 36 Telefonica Empresas
4270 66 18 10 Red de Interconexion Universi
11830 65 4 25 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 903 843 USDA
7132 959 750 Southwestern Bell Internet Se
7843 729 547 Adelphia Corp.
18566 545 540 Covad Communications
3908 920 449 Supernet, Inc.
7018 1351 421 AT&T
189 704 415 Genuity
4323 575 406 Time Warner Communications, I
4755 412 336 Videsh Sanchar Nigam Ltd. Aut
1221 1103 312 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 371 292 SAVVIS Communications Corpora
6197 481 285 BellSouth Network Solutions,
22927 297 284 TELEFONICA DE ARGENTINA
6198 458 283 BellSouth Network Solutions,
1239 964 282 Sprint
4355 388 279 EarthLink, Inc.
1 732 267 GENUITY
4814 289 266 China Telecom (Group)
27364 270 252 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
64515 PRIVATE 202.174.42.0/24 17909 AirNet Commercial Au
64514 PRIVATE 203.28.47.0/24 17909 AirNet Commercial Au
64512 PRIVATE 203.34.180.0/24 17909 AirNet Commercial Au
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
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 /8:18 /9:7 /10:8 /11:13 /12:50
/13:93 /14:253 /15:463 /16:7385 /17:1672 /18:2972
/19:8372 /20:8349 /21:6030 /22:8942 /23:10556 /24:69462
/25:142 /26:191 /27:54 /28:25 /29:13 /30:24
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 625 704 Genuity
3908 576 920 Supernet, Inc.
18566 540 545 Covad Communications
702 481 774 UUNET - Commercial IP service
7018 478 1351 AT&T
7843 471 729 Adelphia Corp.
690 443 494 Merit Network
701 430 1578 UUNET Technologies, Inc.
7066 380 481 Virginia Polytechnic Institut
6198 361 458 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
1239 357 964 Sprint
20115 341 476 Charter Communications
11305 311 334 Interland Incorporated
2386 309 515 AT&T Data Communications Serv
4814 277 289 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 257 732 GENUITY
22927 235 297 TELEFONICA DE ARGENTINA
3215 233 310 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:685 13:1 15:4 17:3 20:8 24:825
25:1 32:85 38:62 40:18 44:2 55:1
57:16 61:434 62:534 63:1906 64:1544 65:1934
66:2393 67:167 68:358 69:117 80:341 81:127
128:157 129:178 130:45 131:82 132:11 133:2
134:154 135:4 136:113 137:109 138:108 139:66
140:147 141:105 142:95 143:45 144:99 145:15
146:267 147:94 148:278 149:72 150:43 151:68
152:246 153:57 154:2 155:108 156:46 157:40
158:124 159:143 160:37 161:74 162:138 163:76
164:306 165:140 166:84 167:331 168:406 169:57
170:313 171:7 192:5347 193:2408 194:1994 195:1006
196:464 198:3563 199:3585 200:2956 202:3770 203:5175
204:3074 205:2004 206:2424 207:2407 208:2653 209:2844
210:772 211:343 212:985 213:797 214:21 215:21
216:3367 217:624 218:89 219:20 220:91
End of report
