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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 27 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127873
Prefixes after maximum aggregation: 79979
Unique aggregates announced to Internet: 61404
Total ASes present in the Internet Routing Table: 15723
Origin-only ASes present in the Internet Routing Table: 13639
Origin ASes announcing only one prefix: 6207
Transit ASes present in the Internet Routing Table: 2084
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: 1222263200
Equivalent to 72 /8s, 218 /16s and 65 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56890
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22280
Total APNIC prefixes after maximum aggregation: 12719
Prefixes being announced from the APNIC address blocks: 20685
Unique aggregates announced from the APNIC address blocks: 12434
APNIC Region origin ASes present in the Internet Routing Table: 1885
APNIC Region origin ASes announcing only one prefix: 544
APNIC Region transit ASes present in the Internet Routing Table: 310
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120714112
Equivalent to 7 /8s, 49 /16s and 243 /24s
Percentage of available APNIC address space announced: 65.0
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: 77932
Total ARIN prefixes after maximum aggregation: 48575
Prefixes being announced from the ARIN address blocks: 55565
Unique aggregates announced from the ARIN address blocks: 17237
ARIN Region origin ASes present in the Internet Routing Table: 8609
ARIN Region origin ASes announcing only one prefix: 2946
ARIN Region transit ASes present in the Internet Routing Table: 823
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 196039200
Equivalent to 11 /8s, 175 /16s and 82 /24s
Percentage of available ARIN address space announced: 73.0
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: 22317
Total RIPE prefixes after maximum aggregation: 16397
Prefixes being announced from the RIPE address blocks: 18926
Unique aggregates announced from the RIPE address blocks: 12728
RIPE Region origin ASes present in the Internet Routing Table: 4814
RIPE Region origin ASes announcing only one prefix: 2619
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134901568
Equivalent to 8 /8s, 10 /16s and 111 /24s
Percentage of available RIPE address space announced: 73.1
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: 5343
Total LACNIC prefixes after maximum aggregation: 2288
Prefixes being announced from the LACNIC address blocks: 4791
Unique aggregates announced from the LACNIC address blocks: 3134
LACNIC Region origin ASes present in the Internet Routing Table: 346
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: 13041152
Equivalent to 0 /8s, 198 /16s and 254 /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 1036 1037 727 Telstra Pty Ltd
4755 403 135 73 Videsh Sanchar Nigam Ltd. Aut
2907 375 1912 350 SINET Japan
703 342 374 270 UUNET
4134 333 2220 112 Data Communications Bureau
17557 304 26 136 Pakistan Telecom
2764 300 323 268 connect.com.au pty ltd
7474 263 307 206 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
4766 239 2461 171 Korea Internet Exchange for "
3786 237 773 203 DACOM Corporation
9583 227 37 19 Satyam Infoway Ltd.,
9800 199 326 57 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 172 15 37 BHARTI BT INTERNET LTD.
4538 170 1538 21 China Education and Research
9929 170 155 34 China Netcom Corp.
17642 158 41 119 RequestDSL BGP AS# for Sydney
9942 156 69 101 COMindico Australia
4739 139 58 129 Commerical Internet eXchange
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1485 8753 1045 UUNET Technologies, Inc.
7018 1374 7156 975 AT&T
3908 922 1589 496 Supernet, Inc.
1239 893 3032 637 Sprint
189 673 451 332 Genuity
18566 666 160 8 Covad Communications
4323 624 551 179 Time Warner Communications, I
6197 568 387 244 BellSouth Network Solutions,
7843 553 411 184 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 518 2129 297 Qwest
6198 514 277 197 BellSouth Network Solutions,
7066 490 205 262 Virginia Polytechnic Institut
3356 480 10645 399 Level 3 Communications, LLC
705 479 192 298 UUNET Technologies, Inc.
1 476 1089 307 GENUITY
20115 476 198 287 Charter Communications
7132 411 6606 237 Southwestern Bell Internet Se
690 408 59 275 Merit Network
4355 403 340 111 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 735 2141 610 UUNET - Commercial IP service
3301 288 1168 276 TeliaNet Sweden
3320 264 1987 224 Deutsche Telekom AG
8220 243 431 232 COLT Internet - International
1257 242 312 191 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 195 307 125 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 179 175 131 BT Ignite European Backbone
8708 158 111 154 Romania Data Systems S.A.
3303 142 540 139 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 110 812 33 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 317 103 114 ImpSat
7303 236 39 55 Telecom Argentina Stet-France
8151 222 334 116 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 107 3 38 Red Universitaria Nacional
11992 88 8 37 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 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 666 658 Covad Communications
4323 624 445 Time Warner Communications, I
3908 922 426 Supernet, Inc.
7018 1374 399 AT&T
7843 553 369 Adelphia Corp.
189 673 341 Genuity
4755 403 330 Videsh Sanchar Nigam Ltd. Aut
6197 568 324 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 514 317 BellSouth Network Solutions,
1221 1036 309 Telstra Pty Ltd
27364 317 294 Armstrong Cable Services
4355 403 292 EarthLink, Inc.
6347 359 280 SAVVIS Communications Corpora
22909 291 273 Comcast Cable Corporation
1239 893 256 Sprint
25844 257 255 Skadden, Arps, Slate, Meagher
376 358 243 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
7066 490 228 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 /8:19 /9:4 /10:6 /11:12 /12:55
/13:98 /14:262 /15:472 /16:7406 /17:1741 /18:3076
/19:8430 /20:8720 /21:6363 /22:9445 /23:10914 /24:70201
/25:166 /26:217 /27:153 /28:26 /29:13 /30:48
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 660 666 Covad Communications
189 587 673 Genuity
3908 582 922 Supernet, Inc.
7018 477 1374 AT&T
702 448 735 UUNET - Commercial IP service
701 442 1485 UUNET Technologies, Inc.
6197 433 568 BellSouth Network Solutions,
6198 406 514 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
690 368 408 Merit Network
20115 324 476 Charter Communications
27364 311 317 Armstrong Cable Services
1239 306 893 Sprint
10753 299 313 XCOM Technologies, INC.
11305 281 358 Interland Incorporated
7843 276 553 Adelphia Corp.
25844 257 257 Skadden, Arps, Slate, Meagher
4355 217 403 EarthLink, Inc.
209 211 518 Qwest
3356 210 480 Level 3 Communications, LLC
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:702 13:1 15:4 16:1 17:3
20:6 24:848 25:1 32:85 38:44 40:23
44:2 55:1 57:14 61:282 62:380 63:1845
64:1760 65:2004 66:2682 67:253 68:395 69:252
80:408 81:124 82:12 128:159 129:171 130:62
131:82 132:13 134:167 135:7 136:185 137:119
138:120 139:45 140:142 141:118 142:100 143:45
144:90 145:13 146:275 147:61 148:302 149:73
150:122 151:68 152:217 153:57 154:4 155:125
156:68 157:48 158:118 159:135 160:45 161:75
162:409 163:78 164:317 165:144 166:96 167:313
168:182 169:95 170:325 171:9 192:5407 193:2463
194:1975 195:1182 196:472 198:3607 199:2755 200:2947
202:3915 203:5251 204:2994 205:2053 206:2346 207:2493
208:2545 209:2864 210:890 211:300 212:977 213:927
214:16 215:22 216:3295 217:687 218:98 219:74
220:103 221:10
End of report
