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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 18 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127016
Prefixes after maximum aggregation: 79704
Unique aggregates announced to Internet: 61058
Total ASes present in the Internet Routing Table: 15663
Origin-only ASes present in the Internet Routing Table: 13574
Origin ASes announcing only one prefix: 6183
Transit ASes present in the Internet Routing Table: 2089
Transit-only ASes present in the Internet Routing Table: 68
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1238609153
Equivalent to 73 /8s, 211 /16s and 173 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56319
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22164
Total APNIC prefixes after maximum aggregation: 12664
Prefixes being announced from the APNIC address blocks: 20583
Unique aggregates announced from the APNIC address blocks: 12370
APNIC Region origin ASes present in the Internet Routing Table: 1876
APNIC Region origin ASes announcing only one prefix: 529
APNIC Region transit ASes present in the Internet Routing Table: 313
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120485504
Equivalent to 7 /8s, 46 /16s and 118 /24s
Percentage of available APNIC address space announced: 64.9
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: 77236
Total ARIN prefixes after maximum aggregation: 48445
Prefixes being announced from the ARIN address blocks: 55132
Unique aggregates announced from the ARIN address blocks: 17073
ARIN Region origin ASes present in the Internet Routing Table: 8584
ARIN Region origin ASes announcing only one prefix: 2947
ARIN Region transit ASes present in the Internet Routing Table: 835
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195749120
Equivalent to 11 /8s, 170 /16s and 229 /24s
Percentage of available ARIN address space announced: 72.9
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: 22235
Total RIPE prefixes after maximum aggregation: 16318
Prefixes being announced from the RIPE address blocks: 18864
Unique aggregates announced from the RIPE address blocks: 12679
RIPE Region origin ASes present in the Internet Routing Table: 4786
RIPE Region origin ASes announcing only one prefix: 2608
RIPE Region transit ASes present in the Internet Routing Table: 843
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134761024
Equivalent to 8 /8s, 8 /16s and 74 /24s
Percentage of available RIPE address space announced: 73.0
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: 5380
Total LACNIC prefixes after maximum aggregation: 2277
Prefixes being announced from the LACNIC address blocks: 4859
Unique aggregates announced from the LACNIC address blocks: 3143
LACNIC Region origin ASes present in the Internet Routing Table: 348
LACNIC Region origin ASes announcing only one prefix: 99
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13011200
Equivalent to 0 /8s, 198 /16s and 137 /24s
Percentage of available LACNIC address space announced: 38.8
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 1039 1038 731 Telstra Pty Ltd
4755 403 136 72 Videsh Sanchar Nigam Ltd. Aut
2907 375 1911 350 SINET Japan
703 339 372 271 UUNET
4134 336 2210 115 Data Communications Bureau
2764 303 324 273 connect.com.au pty ltd
17557 303 26 136 Pakistan Telecom
7474 263 307 203 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 241 37 21 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 238 2461 170 Korea Internet Exchange for "
9800 198 326 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 169 1538 21 China Education and Research
9929 169 153 33 China Netcom Corp.
9498 166 12 19 BHARTI BT INTERNET LTD.
17642 158 41 119 RequestDSL BGP AS# for Sydney
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1476 8777 1036 UUNET Technologies, Inc.
7018 1392 7200 977 AT&T
3908 920 1541 495 Supernet, Inc.
1239 891 3016 634 Sprint
189 669 371 324 Genuity
18566 662 160 8 Covad Communications
4323 623 551 179 Time Warner Communications, I
7843 568 409 205 Adelphia Corp.
6197 567 387 244 BellSouth Network Solutions,
852 523 1124 415 Telus Advanced Communications
209 520 2177 300 Qwest
6198 510 276 195 BellSouth Network Solutions,
7066 490 205 261 Virginia Polytechnic Institut
1 484 1095 311 GENUITY
705 481 192 304 UUNET Technologies, Inc.
20115 477 197 287 Charter Communications
3356 468 10755 393 Level 3 Communications, LLC
7132 410 6608 240 Southwestern Bell Internet Se
4355 408 339 109 EarthLink, Inc.
690 407 59 274 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 732 2123 608 UUNET - Commercial IP service
3301 290 1170 278 TeliaNet Sweden
3320 261 1987 223 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
1257 239 311 189 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 214 752 121 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 185 779 149 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 167 161 119 BT Ignite European Backbone
8708 155 110 152 Romania Data Systems S.A.
3303 139 540 136 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 121 360 119 Song Networks
3269 116 819 63 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 110 796 32 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 312 98 113 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 220 334 116 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 152 10 18 NSS, S.A.
6503 132 205 93 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 36 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
11830 73 6 28 Instituto Costarricense de El
1916 72 302 44 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 57 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 662 654 Covad Communications
4323 623 444 Time Warner Communications, I
3908 920 425 Supernet, Inc.
7018 1392 415 AT&T
7843 568 363 Adelphia Corp.
189 669 345 Genuity
4755 403 331 Videsh Sanchar Nigam Ltd. Aut
6197 567 323 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 510 315 BellSouth Network Solutions,
1221 1039 308 Telstra Pty Ltd
4355 408 299 EarthLink, Inc.
27364 317 298 Armstrong Cable Services
6347 359 279 SAVVIS Communications Corpora
22909 286 272 Comcast Cable Corporation
1239 891 257 Sprint
25844 256 254 Skadden, Arps, Slate, Meagher
376 358 243 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
7066 490 229 Virginia Polytechnic Institut
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
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 /15:473 /16:7405 /17:1741 /18:3078
/19:8404 /20:8663 /21:6349 /22:9315 /23:10767 /24:69752
/25:159 /26:209 /27:128 /28:27 /29:12 /30:51
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 656 662 Covad Communications
189 591 669 Genuity
3908 582 920 Supernet, Inc.
7018 499 1392 AT&T
702 446 732 UUNET - Commercial IP service
701 437 1476 UUNET Technologies, Inc.
6197 432 567 BellSouth Network Solutions,
6198 401 510 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
690 367 407 Merit Network
20115 326 477 Charter Communications
27364 311 317 Armstrong Cable Services
1239 300 891 Sprint
7843 293 568 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 256 256 Skadden, Arps, Slate, Meagher
10753 237 242 XCOM Technologies, INC.
4355 220 408 EarthLink, Inc.
209 209 520 Qwest
1 203 484 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:713 13:1 15:4 16:1 17:3
20:6 24:867 25:1 32:97 38:44 40:23
44:2 55:1 57:14 61:261 62:395 63:1852
64:1757 65:1997 66:2629 67:231 68:384 69:247
80:398 81:123 82:10 128:109 129:170 130:47
131:80 132:13 134:172 135:7 136:122 137:113
138:120 139:46 140:141 141:115 142:93 143:44
144:86 145:13 146:281 147:61 148:302 149:72
150:120 151:63 152:217 153:57 154:3 155:121
156:58 157:47 158:118 159:136 160:45 161:74
162:405 163:76 164:330 165:139 166:95 167:313
168:181 169:95 170:325 171:8 192:5357 193:2469
194:1976 195:1159 196:466 198:3589 199:2725 200:3017
202:3944 203:5207 204:2950 205:2038 206:2318 207:2486
208:2558 209:2849 210:897 211:301 212:990 213:915
214:16 215:22 216:3235 217:688 218:101 219:75
220:98 221:10
End of report
