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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 04 Jun, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125680
Prefixes after maximum aggregation: 78820
Unique aggregates announced to Internet: 59392
Total ASes present in the Internet Routing Table: 15264
Origin-only ASes present in the Internet Routing Table: 13229
Origin ASes announcing only one prefix: 5985
Transit ASes present in the Internet Routing Table: 2035
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1231833696
Equivalent to 73 /8s, 108 /16s and 74 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 55360
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21713
Total APNIC prefixes after maximum aggregation: 12560
Prefixes being announced from the APNIC address blocks: 20106
Unique aggregates announced from the APNIC address blocks: 12131
APNIC Region origin ASes present in the Internet Routing Table: 1809
APNIC Region origin ASes announcing only one prefix: 520
APNIC Region transit ASes present in the Internet Routing Table: 298
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 114029216
Equivalent to 6 /8s, 203 /16s and 242 /24s
Percentage of available APNIC address space announced: 61.4
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: 76931
Total ARIN prefixes after maximum aggregation: 48041
Prefixes being announced from the ARIN address blocks: 55080
Unique aggregates announced from the ARIN address blocks: 16533
ARIN Region origin ASes present in the Internet Routing Table: 8436
ARIN Region origin ASes announcing only one prefix: 2878
ARIN Region transit ASes present in the Internet Routing Table: 822
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191825408
Equivalent to 11 /8s, 111 /16s and 6 /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: 21671
Total RIPE prefixes after maximum aggregation: 15962
Prefixes being announced from the RIPE address blocks: 18169
Unique aggregates announced from the RIPE address blocks: 12157
RIPE Region origin ASes present in the Internet Routing Table: 4614
RIPE Region origin ASes announcing only one prefix: 2502
RIPE Region transit ASes present in the Internet Routing Table: 816
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 131639296
Equivalent to 7 /8s, 216 /16s and 168 /24s
Percentage of available RIPE address space announced: 71.3
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: 5361
Total LACNIC prefixes after maximum aggregation: 2257
Prefixes being announced from the LACNIC address blocks: 4809
Unique aggregates announced from the LACNIC address blocks: 3028
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: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12645632
Equivalent to 0 /8s, 192 /16s and 245 /24s
Percentage of available LACNIC address space announced: 37.7
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 1077 1103 770 Telstra Pty Ltd
4755 415 133 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 350 SINET Japan
17557 361 25 144 Pakistan Telecom
703 343 371 273 UUNET
2764 312 341 278 connect.com.au pty ltd
4814 297 86 19 China Telecom (Group)
7474 265 290 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 236 2046 118 Data Communications Bureau
9583 228 34 17 Satyam Infoway Ltd.,
4766 212 2475 159 Korea Internet Exchange for "
9443 182 58 82 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 143 10 18 BHARTI BT INTERNET LTD.
4739 138 57 126 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 129 156 103 TANet2, sponsored by NSC, TAI
4716 128 745 122 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1556 8917 1096 UUNET Technologies, Inc.
7018 1337 7193 923 AT&T
7132 988 6475 207 Southwestern Bell Internet Se
1239 947 3018 666 Sprint
3908 918 1556 480 Supernet, Inc.
189 705 341 292 Genuity
11305 657 171 82 Interland Incorporated
1 635 2591 430 GENUITY
7843 631 354 176 Adelphia Corp.
4323 597 525 175 Time Warner Communications, I
18566 581 160 8 Covad Communications
852 526 1123 416 Telus Advanced Communications
705 511 273 334 UUNET Technologies, Inc.
2386 496 527 283 AT&T Data Communications Serv
209 492 2106 300 Qwest
6197 491 343 194 BellSouth Network Solutions,
7066 482 204 259 Virginia Polytechnic Institut
20115 465 194 286 Charter Communications
6198 462 230 177 BellSouth Network Solutions,
690 452 66 296 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 747 2173 634 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 302 1172 289 TeliaNet Sweden
3215 300 864 169 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 226 311 188 SWIPnet Swedish IP Network
5400 224 140 133 BT Ignite European Backbone
8220 223 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5515 181 795 152 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 154 44 149 Romania Data Systems S.A.
3303 140 549 137 Swisscom Ltd
8895 131 58 29 KACST/ISU Riyadh Autonomous S
12302 128 18 35 MobiFon S.A.
2856 124 1315 114 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 115 365 113 Song Networks
3352 109 780 32 Ibernet, Internet Access Netw
5511 95 177 76 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 295 98 110 ImpSat
7303 237 37 58 Telecom Argentina Stet-France
8151 214 350 117 UniNet S.A. de C.V.
11172 169 66 40 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 131 189 94 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 100 70 21 Telefonica Del Peru
11992 87 8 36 Integrated Systems
8065 79 8 15 Empresas Publicas de Medellin
6535 74 5 23 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7738 63 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 988 781 Southwestern Bell Internet Se
11305 657 575 Interland Incorporated
18566 581 573 Covad Communications
7843 631 455 Adelphia Corp.
3908 918 438 Supernet, Inc.
4323 597 422 Time Warner Communications, I
7018 1337 414 AT&T
189 705 413 Genuity
4755 415 345 Videsh Sanchar Nigam Ltd. Aut
1221 1077 307 Telstra Pty Ltd
6197 491 297 BellSouth Network Solutions,
4355 402 291 EarthLink, Inc.
27364 307 287 Armstrong Cable Services
6198 462 285 BellSouth Network Solutions,
6347 363 285 SAVVIS Communications Corpora
22927 298 285 TELEFONICA DE ARGENTINA
1239 947 281 Sprint
4814 297 278 China Telecom (Group)
22909 274 264 Comcast Cable Corporation
376 368 251 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65516 PRIVATE 61.232.70.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.71.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.72.0/22 17621 China Netcom Corp.
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 /12:52
/13:98 /14:254 /15:467 /16:7418 /17:1681 /18:2976
/19:8445 /20:8483 /21:6144 /22:9044 /23:10642 /24:69398
/25:157 /26:215 /27:56 /28:36 /29:24 /30:21
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 628 705 Genuity
11305 583 657 Interland Incorporated
18566 575 581 Covad Communications
3908 573 918 Supernet, Inc.
7018 463 1337 AT&T
702 456 747 UUNET - Commercial IP service
701 438 1556 UUNET Technologies, Inc.
690 410 452 Merit Network
7843 394 631 Adelphia Corp.
7066 379 482 Virginia Polytechnic Institut
6197 367 491 BellSouth Network Solutions,
6198 360 462 BellSouth Network Solutions,
1239 355 947 Sprint
20115 326 465 Charter Communications
27364 300 307 Armstrong Cable Services
3320 289 346 Deutsche Telekom AG
4814 282 297 China Telecom (Group)
2386 277 496 AT&T Data Communications Serv
22927 236 298 TELEFONICA DE ARGENTINA
1 235 635 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:701 13:1 15:4 16:1 17:3
20:8 24:829 25:1 32:87 38:60 40:20
44:2 55:1 57:17 61:461 62:397 63:1868
64:1919 65:1950 66:2499 67:175 68:380 69:157
80:350 81:126 128:140 129:176 130:47 131:80
132:26 133:1 134:180 135:4 136:116 137:107
138:61 139:64 140:136 141:116 142:93 143:43
144:103 145:14 146:275 147:97 148:289 149:59
150:44 151:74 152:231 153:57 154:3 155:115
156:51 157:39 158:126 159:138 160:43 161:76
162:128 163:76 164:308 165:143 166:93 167:322
168:408 169:61 170:312 171:7 192:5326 193:2438
194:1954 195:1032 196:478 198:3570 199:2726 200:3004
202:3773 203:5260 204:2999 205:2038 206:2374 207:2400
208:2612 209:2889 210:824 211:335 212:1082 213:786
214:20 215:23 216:3516 217:623 218:81 219:39
220:93 221:2
End of report
