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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 24 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124917
Prefixes after maximum aggregation: 78307
Unique aggregates announced to Internet: 59163
Total ASes present in the Internet Routing Table: 15062
Origin-only ASes present in the Internet Routing Table: 13060
Origin ASes announcing only one prefix: 5919
Transit ASes present in the Internet Routing Table: 2002
Transit-only ASes present in the Internet Routing Table: 74
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1225304832
Equivalent to 73 /8s, 8 /16s and 171 /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: 54215
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21013
Total APNIC prefixes after maximum aggregation: 12289
Prefixes being announced from the APNIC address blocks: 19443
Unique aggregates announced from the APNIC address blocks: 11990
APNIC Region origin ASes present in the Internet Routing Table: 1782
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 297
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 110484960
Equivalent to 6 /8s, 149 /16s and 221 /24s
Percentage of available APNIC address space announced: 59.5
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: 77219
Total ARIN prefixes after maximum aggregation: 48032
Prefixes being announced from the ARIN address blocks: 55264
Unique aggregates announced from the ARIN address blocks: 16453
ARIN Region origin ASes present in the Internet Routing Table: 8344
ARIN Region origin ASes announcing only one prefix: 2852
ARIN Region transit ASes present in the Internet Routing Table: 795
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191054592
Equivalent to 11 /8s, 99 /16s and 67 /24s
Percentage of available ARIN address space announced: 71.2
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: 21446
Total RIPE prefixes after maximum aggregation: 15775
Prefixes being announced from the RIPE address blocks: 17996
Unique aggregates announced from the RIPE address blocks: 12079
RIPE Region origin ASes present in the Internet Routing Table: 4527
RIPE Region origin ASes announcing only one prefix: 2457
RIPE Region transit ASes present in the Internet Routing Table: 813
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129326976
Equivalent to 7 /8s, 181 /16s and 95 /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: 5238
Total LACNIC prefixes after maximum aggregation: 2211
Prefixes being announced from the LACNIC address blocks: 4685
Unique aggregates announced from the LACNIC address blocks: 2929
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 89
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12450560
Equivalent to 0 /8s, 189 /16s and 251 /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 1100 1104 789 Telstra Pty Ltd
4755 409 135 71 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 281 82 20 China Telecom (Group)
7474 272 276 208 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 212 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 248 54 CHINA UNICOM
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
4621 124 12 65 UNINET-TH
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1585 8924 1106 UUNET Technologies, Inc.
7018 1366 7175 945 AT&T
1239 967 3117 685 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 937 1571 477 Supernet, Inc.
4151 882 691 60 USDA
1 737 2753 470 GENUITY
7843 729 405 181 Adelphia Corp.
189 704 341 289 Genuity
4323 573 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 545 144 5 Covad Communications
705 528 278 233 UUNET Technologies, Inc.
2386 514 482 276 AT&T Data Communications Serv
3561 510 2341 334 Cable & Wireless USA
690 494 72 312 Merit Network
209 490 2120 296 Qwest
7066 483 204 257 Virginia Polytechnic Institut
6197 481 340 196 BellSouth Network Solutions,
20115 462 187 285 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 773 2186 643 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 308 1173 298 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 199 97 110 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 107 750 31 Ibernet, Internet Access Netw
2874 95 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 293 99 105 ImpSat
7303 255 36 65 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 90 62 20 Telefonica Del Peru
11992 87 8 36 Integrated Systems
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
11830 66 4 26 Instituto Costarricense de El
4270 65 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
15034 60 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 882 822 USDA
7132 959 750 Southwestern Bell Internet Se
7843 729 548 Adelphia Corp.
18566 545 540 Covad Communications
3908 937 460 Supernet, Inc.
7018 1366 421 AT&T
189 704 415 Genuity
4323 573 404 Time Warner Communications, I
4755 409 338 Videsh Sanchar Nigam Ltd. Aut
1221 1100 311 Telstra Pty Ltd
705 528 295 UUNET Technologies, Inc.
6347 367 288 SAVVIS Communications Corpora
6197 481 285 BellSouth Network Solutions,
22927 297 284 TELEFONICA DE ARGENTINA
1239 967 282 Sprint
6198 457 282 BellSouth Network Solutions,
4355 384 275 EarthLink, Inc.
1 737 267 GENUITY
4814 281 261 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
1877 UNALLOCATED 192.108.201.0/24 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
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 /9:5 /10:8 /11:13 /12:50
/13:93 /14:253 /15:462 /16:7383 /17:1670 /18:2973
/19:8368 /20:8336 /21:6020 /22:8908 /23:10617 /24:69332
/25:132 /26:156 /27:33 /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 593 937 Supernet, Inc.
18566 540 545 Covad Communications
7018 482 1366 AT&T
702 480 773 UUNET - Commercial IP service
7843 472 729 Adelphia Corp.
690 443 494 Merit Network
701 441 1585 UUNET Technologies, Inc.
7066 382 483 Virginia Polytechnic Institut
1239 361 967 Sprint
6198 360 457 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
20115 327 462 Charter Communications
11305 311 334 Interland Incorporated
2386 308 514 AT&T Data Communications Serv
4814 270 281 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 737 GENUITY
3215 235 312 France Telecom Transpac
22927 235 297 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:682 13:1 15:4 17:3 20:8 24:819
25:1 32:85 38:65 40:19 44:2 55:1
57:16 61:429 62:530 63:1904 64:1537 65:1935
66:2385 67:166 68:377 69:116 80:342 81:122
128:158 129:178 130:45 131:82 132:11 133:2
134:155 135:4 136:113 137:109 138:109 139:66
140:147 141:92 142:95 143:45 144:112 145:15
146:264 147:93 148:278 149:72 150:43 151:68
152:246 153:57 154:2 155:108 156:45 157:40
158:125 159:144 160:38 161:74 162:138 163:77
164:312 165:139 166:84 167:330 168:405 169:57
170:314 171:7 192:5344 193:2407 194:1995 195:1005
196:462 198:3611 199:3566 200:2944 202:3702 203:5158
204:3080 205:2002 206:2409 207:2407 208:2656 209:2838
210:770 211:344 212:999 213:794 214:21 215:21
216:3360 217:623 218:89 219:20 220:58
End of report
