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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 21 Sep, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127942
Prefixes after maximum aggregation: 80102
Unique aggregates announced to Internet: 61737
Total ASes present in the Internet Routing Table: 15836
Origin-only ASes present in the Internet Routing Table: 13737
Origin ASes announcing only one prefix: 6251
Transit ASes present in the Internet Routing Table: 2099
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 5.0
Max AS path length visible: 26
Illegal AS announcements present in the Routing Table: 5
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1225907236
Equivalent to 73 /8s, 17 /16s and 220 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56922
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22547
Total APNIC prefixes after maximum aggregation: 12732
Prefixes being announced from the APNIC address blocks: 20942
Unique aggregates announced from the APNIC address blocks: 12360
APNIC Region origin ASes present in the Internet Routing Table: 1897
APNIC Region origin ASes announcing only one prefix: 547
APNIC Region transit ASes present in the Internet Routing Table: 310
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 121992448
Equivalent to 7 /8s, 69 /16s and 117 /24s
Percentage of available APNIC address space announced: 65.7
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: 77317
Total ARIN prefixes after maximum aggregation: 48567
Prefixes being announced from the ARIN address blocks: 55314
Unique aggregates announced from the ARIN address blocks: 17508
ARIN Region origin ASes present in the Internet Routing Table: 8660
ARIN Region origin ASes announcing only one prefix: 2985
ARIN Region transit ASes present in the Internet Routing Table: 834
Average ARIN Region AS path length visible: 4.8
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 197229600
Equivalent to 11 /8s, 193 /16s and 124 /24s
Percentage of available ARIN address space announced: 73.5
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: 22650
Total RIPE prefixes after maximum aggregation: 16510
Prefixes being announced from the RIPE address blocks: 19172
Unique aggregates announced from the RIPE address blocks: 12830
RIPE Region origin ASes present in the Internet Routing Table: 4862
RIPE Region origin ASes announcing only one prefix: 2618
RIPE Region transit ASes present in the Internet Routing Table: 854
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 136457024
Equivalent to 8 /8s, 34 /16s and 43 /24s
Percentage of available RIPE address space announced: 73.9
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: 5426
Total LACNIC prefixes after maximum aggregation: 2293
Prefixes being announced from the LACNIC address blocks: 4868
Unique aggregates announced from the LACNIC address blocks: 3177
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 101
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13298432
Equivalent to 0 /8s, 202 /16s and 235 /24s
Percentage of available LACNIC address space announced: 39.6
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 973 1109 691 Telstra Pty Ltd
4755 412 135 75 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 349 SINET Japan
4134 340 2228 108 Data Communications Bureau
703 335 371 264 UUNET
17557 291 21 136 Pakistan Telecom
2764 290 322 258 connect.com.au pty ltd
7474 269 306 209 Optus Communications Pty Ltd
17676 264 3980 26 XTAGE CORPORATION
9583 251 38 25 Satyam Infoway Ltd.,
4766 238 2461 173 Korea Internet Exchange for "
3786 235 773 203 DACOM Corporation
9800 203 332 52 CHINA UNICOM
9443 185 58 82 Primus Telecommunications
9498 185 20 15 BHARTI BT INTERNET LTD.
9929 179 160 36 China Netcom Corp.
9942 176 69 106 COMindico Australia
4538 172 1554 21 China Education and Research
17642 155 40 116 RequestDSL BGP AS# for Sydney
4837 140 1058 88 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1460 8720 1016 UUNET Technologies, Inc.
7018 1397 7139 973 AT&T
3908 920 1574 492 Supernet, Inc.
1239 904 3035 651 Sprint
18566 688 176 8 Covad Communications
4323 663 571 189 Time Warner Communications, I
189 620 432 356 Genuity
6197 613 397 269 BellSouth Network Solutions,
3356 523 10676 441 Level 3 Communications, LLC
7843 521 448 133 Adelphia Corp.
852 517 1123 410 Telus Advanced Communications
209 501 2111 286 Qwest
6198 493 329 192 BellSouth Network Solutions,
20115 470 202 293 Charter Communications
7066 457 205 262 Virginia Polytechnic Institut
1 440 1049 276 GENUITY
10753 421 86 206 XCOM Technologies, INC.
705 416 185 253 UUNET Technologies, Inc.
690 411 59 276 Merit Network
4355 394 336 110 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 713 2121 592 UUNET - Commercial IP service
3301 295 1168 282 TeliaNet Sweden
3320 270 1989 230 Deutsche Telekom AG
8220 257 434 245 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
1257 228 374 183 SWIPnet Swedish IP Network
719 193 307 123 LANLINK autonomous system
5515 186 779 148 Sonera Solution Autonomous Sy
3215 184 721 106 France Telecom Transpac
5400 183 174 134 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
8708 155 110 152 Romania Data Systems S.A.
3303 142 540 137 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 125 376 123 Song Networks
3269 119 853 65 TELECOM ITALIA
20858 113 17 3 This AS will be used to conne
2856 112 1293 103 BTnet UK Regional network
25186 104 144 71 France Telecom Transpac's Tra
3352 98 824 34 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 339 103 104 ImpSat
8151 231 350 120 UniNet S.A. de C.V.
7303 229 40 62 Telecom Argentina Stet-France
11172 188 79 44 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 130 205 93 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 104 3 36 Red Universitaria Nacional
11992 87 8 37 Integrated Systems
6147 83 70 19 Telefonica Del Peru
8065 82 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 72 21 27 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
1916 61 270 41 Fundacao de Amparo a Pesquisa
7984 59 12 40 Global One Colombia
4926 57 4 48 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 688 680 Covad Communications
4323 663 474 Time Warner Communications, I
3908 920 428 Supernet, Inc.
7018 1397 424 AT&T
7843 521 388 Adelphia Corp.
6197 613 344 BellSouth Network Solutions,
4755 412 337 Videsh Sanchar Nigam Ltd. Aut
6198 493 301 BellSouth Network Solutions,
27364 319 296 Armstrong Cable Services
4355 394 284 EarthLink, Inc.
1221 973 282 Telstra Pty Ltd
22909 299 280 Comcast Cable Corporation
6347 353 272 SAVVIS Communications Corpora
189 620 264 Genuity
1239 904 253 Sprint
376 362 247 Reseau Interordinateurs Scien
22773 269 241 Cox Communications, Inc. Atla
25844 242 240 Skadden, Arps, Slate, Meagher
17676 264 238 XTAGE CORPORATION
6140 339 235 ImpSat
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
23780 UNALLOCATED 211.15.112.0/20 2516 Kokusai Denshin Denw
23780 UNALLOCATED 211.19.224.0/19 2516 Kokusai Denshin Denw
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
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:4 /10:6 /11:12 /12:55
/13:97 /14:265 /15:471 /16:7429 /17:1753 /18:3131
/19:8463 /20:8813 /21:6427 /22:9448 /23:10925 /24:70006
/25:154 /26:203 /27:154 /28:27 /29:9 /30:50
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 682 688 Covad Communications
3908 581 920 Supernet, Inc.
189 536 620 Genuity
7018 502 1397 AT&T
6197 478 613 BellSouth Network Solutions,
701 439 1460 UUNET Technologies, Inc.
702 428 713 UUNET - Commercial IP service
10753 389 421 XCOM Technologies, INC.
6198 379 493 BellSouth Network Solutions,
690 371 411 Merit Network
7066 353 457 Virginia Polytechnic Institut
20115 316 470 Charter Communications
1239 313 904 Sprint
27364 313 319 Armstrong Cable Services
3356 259 523 Level 3 Communications, LLC
25844 242 242 Skadden, Arps, Slate, Meagher
7843 215 521 Adelphia Corp.
4355 213 394 EarthLink, Inc.
3320 209 270 Deutsche Telekom AG
209 200 501 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 13:1 15:4 16:1 17:3
20:6 24:832 25:1 32:84 38:46 40:23
44:2 55:1 57:14 61:310 62:521 63:1872
64:1771 65:1960 66:2664 67:287 68:360 69:245
80:421 81:133 82:16 128:141 129:168 130:62
131:84 132:16 134:169 135:9 136:135 137:114
138:124 139:49 140:162 141:138 142:101 143:44
144:88 145:13 146:274 147:61 148:301 149:80
150:121 151:68 152:218 153:58 154:5 155:127
156:58 157:53 158:134 159:139 160:45 161:69
162:358 163:76 164:282 165:155 166:95 167:305
168:176 169:95 170:326 171:9 192:5297 193:2462
194:1978 195:1144 196:463 198:3576 199:2728 200:2983
202:3971 203:5284 204:2982 205:2034 206:2316 207:2491
208:2570 209:2703 210:908 211:361 212:956 213:933
214:16 215:22 216:3242 217:719 218:106 219:37
220:115 221:11 222:1
End of report
