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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 29 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127603
Prefixes after maximum aggregation: 79927
Unique aggregates announced to Internet: 61224
Total ASes present in the Internet Routing Table: 15734
Origin-only ASes present in the Internet Routing Table: 13642
Origin ASes announcing only one prefix: 6214
Transit ASes present in the Internet Routing Table: 2092
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: 26
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: 15
Number of addresses announced to Internet: 1240280096
Equivalent to 73 /8s, 237 /16s and 44 /24s
Percentage of available address space announced: 33.5
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56730
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22275
Total APNIC prefixes after maximum aggregation: 12664
Prefixes being announced from the APNIC address blocks: 20710
Unique aggregates announced from the APNIC address blocks: 12295
APNIC Region origin ASes present in the Internet Routing Table: 1887
APNIC Region origin ASes announcing only one prefix: 545
APNIC Region transit ASes present in the Internet Routing Table: 311
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120996864
Equivalent to 7 /8s, 54 /16s and 68 /24s
Percentage of available APNIC address space announced: 65.2
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: 77730
Total ARIN prefixes after maximum aggregation: 48599
Prefixes being announced from the ARIN address blocks: 55454
Unique aggregates announced from the ARIN address blocks: 17268
ARIN Region origin ASes present in the Internet Routing Table: 8618
ARIN Region origin ASes announcing only one prefix: 2952
ARIN Region transit ASes present in the Internet Routing Table: 833
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 196187168
Equivalent to 11 /8s, 177 /16s and 148 /24s
Percentage of available ARIN address space announced: 73.1
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: 22237
Total RIPE prefixes after maximum aggregation: 16372
Prefixes being announced from the RIPE address blocks: 18859
Unique aggregates announced from the RIPE address blocks: 12698
RIPE Region origin ASes present in the Internet Routing Table: 4812
RIPE Region origin ASes announcing only one prefix: 2619
RIPE Region transit ASes present in the Internet Routing Table: 847
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 135071296
Equivalent to 8 /8s, 13 /16s and 6 /24s
Percentage of available RIPE address space announced: 73.2
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: 5359
Total LACNIC prefixes after maximum aggregation: 2292
Prefixes being announced from the LACNIC address blocks: 4800
Unique aggregates announced from the LACNIC address blocks: 3136
LACNIC Region origin ASes present in the Internet Routing Table: 347
LACNIC Region origin ASes announcing only one prefix: 98
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 13051392
Equivalent to 0 /8s, 199 /16s and 38 /24s
Percentage of available LACNIC address space announced: 38.9
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 981 1125 694 Telstra Pty Ltd
4755 396 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 375 1912 350 SINET Japan
703 341 372 270 UUNET
4134 333 2220 112 Data Communications Bureau
17557 304 26 136 Pakistan Telecom
2764 300 323 268 connect.com.au pty ltd
7474 265 307 206 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 243 37 21 Satyam Infoway Ltd.,
4766 239 2461 171 Korea Internet Exchange for "
3786 237 773 203 DACOM Corporation
9800 199 326 57 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 175 15 36 BHARTI BT INTERNET LTD.
4538 170 1538 21 China Education and Research
9929 170 155 34 China Netcom Corp.
17642 156 41 117 RequestDSL BGP AS# for Sydney
9942 155 69 100 COMindico Australia
9238 140 9 21 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1485 8785 1043 UUNET Technologies, Inc.
7018 1373 7156 974 AT&T
3908 924 1573 493 Supernet, Inc.
1239 897 3031 646 Sprint
189 673 451 333 Genuity
18566 669 160 8 Covad Communications
4323 624 551 179 Time Warner Communications, I
6197 572 387 248 BellSouth Network Solutions,
7843 549 419 183 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 518 2145 297 Qwest
6198 514 277 197 BellSouth Network Solutions,
7066 490 205 262 Virginia Polytechnic Institut
3356 479 10676 398 Level 3 Communications, LLC
20115 479 200 289 Charter Communications
1 467 1056 301 GENUITY
705 463 182 289 UUNET Technologies, Inc.
7132 411 6609 240 Southwestern Bell Internet Se
690 410 59 276 Merit Network
4355 392 340 111 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 729 2123 604 UUNET - Commercial IP service
3301 294 1168 280 TeliaNet Sweden
3320 268 1989 228 Deutsche Telekom AG
1257 248 375 190 SWIPnet Swedish IP Network
8220 246 431 235 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 193 307 122 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
5400 180 175 131 BT Ignite European Backbone
786 174 1825 174 The JANET IP Service
8708 159 111 155 Romania Data Systems S.A.
3303 143 540 140 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
3246 121 360 119 Song Networks
3269 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 828 31 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 319 103 114 ImpSat
7303 236 39 55 Telecom Argentina Stet-France
8151 222 334 117 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 108 3 39 Red Universitaria Nacional
11992 87 8 37 Integrated Systems
6147 86 70 20 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 74 6 29 Instituto Costarricense de El
1916 73 306 43 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 56 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 669 661 Covad Communications
4323 624 445 Time Warner Communications, I
3908 924 431 Supernet, Inc.
7018 1373 399 AT&T
7843 549 366 Adelphia Corp.
189 673 340 Genuity
4755 396 325 Videsh Sanchar Nigam Ltd. Aut
6197 572 324 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 514 317 BellSouth Network Solutions,
27364 317 294 Armstrong Cable Services
1221 981 287 Telstra Pty Ltd
4355 392 281 EarthLink, Inc.
6347 355 276 SAVVIS Communications Corpora
22909 291 273 Comcast Cable Corporation
1239 897 251 Sprint
25844 241 239 Skadden, Arps, Slate, Meagher
376 353 238 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
22773 246 229 Cox Communications, Inc. Atla
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
65100 PRIVATE 210.104.28.0/25 9768 Korea Telecom
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 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
192.153.136.0/21 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.228.80.0/24 30122 INTERNET SOFTWARE CONSORTIUM,
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:4 /10:6 /11:12 /12:55
/13:98 /14:263 /15:474 /16:7415 /17:1735 /18:3076
/19:8432 /20:8701 /21:6352 /22:9431 /23:10887 /24:69992
/25:168 /26:218 /27:151 /28:26 /29:13 /30:48
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 663 669 Covad Communications
189 588 673 Genuity
3908 585 924 Supernet, Inc.
7018 476 1373 AT&T
702 444 729 UUNET - Commercial IP service
701 443 1485 UUNET Technologies, Inc.
6197 437 572 BellSouth Network Solutions,
6198 406 514 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
690 371 410 Merit Network
20115 327 479 Charter Communications
27364 311 317 Armstrong Cable Services
1239 308 897 Sprint
10753 298 312 XCOM Technologies, INC.
11305 281 358 Interland Incorporated
7843 265 549 Adelphia Corp.
25844 241 241 Skadden, Arps, Slate, Meagher
209 211 518 Qwest
4355 210 392 EarthLink, Inc.
3320 207 268 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:702 13:1 15:4 16:1 17:4
20:6 24:837 25:1 32:85 38:45 40:23
44:2 55:1 57:14 61:297 62:395 63:1850
64:1767 65:2009 66:2674 67:257 68:391 69:255
80:408 81:126 82:13 128:130 129:171 130:62
131:81 132:13 134:167 135:7 136:186 137:119
138:113 139:47 140:145 141:118 142:99 143:45
144:87 145:13 146:275 147:61 148:302 149:74
150:123 151:68 152:217 153:57 154:4 155:125
156:68 157:48 158:119 159:135 160:45 161:75
162:360 163:78 164:311 165:146 166:96 167:313
168:180 169:95 170:320 171:9 192:5372 193:2470
194:1950 195:1168 196:473 198:3608 199:2730 200:2960
202:3902 203:5253 204:2990 205:2040 206:2337 207:2491
208:2569 209:2860 210:901 211:301 212:948 213:909
214:16 215:22 216:3264 217:700 218:98 219:72
220:101 221:10
End of report
