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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 05 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127387
Prefixes after maximum aggregation: 79683
Unique aggregates announced to Internet: 60096
Total ASes present in the Internet Routing Table: 15629
Origin-only ASes present in the Internet Routing Table: 13553
Origin ASes announcing only one prefix: 6152
Transit ASes present in the Internet Routing Table: 2076
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: 20
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: 14
Number of addresses announced to Internet: 1221164416
Equivalent to 72 /8s, 201 /16s and 125 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56406
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22138
Total APNIC prefixes after maximum aggregation: 12689
Prefixes being announced from the APNIC address blocks: 20553
Unique aggregates announced from the APNIC address blocks: 12400
APNIC Region origin ASes present in the Internet Routing Table: 1874
APNIC Region origin ASes announcing only one prefix: 533
APNIC Region transit ASes present in the Internet Routing Table: 309
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 118688640
Equivalent to 7 /8s, 19 /16s and 11 /24s
Percentage of available APNIC address space announced: 63.9
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: 77674
Total ARIN prefixes after maximum aggregation: 48436
Prefixes being announced from the ARIN address blocks: 55458
Unique aggregates announced from the ARIN address blocks: 16430
ARIN Region origin ASes present in the Internet Routing Table: 8577
ARIN Region origin ASes announcing only one prefix: 2922
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: 17
Number of ARIN addresses announced to Internet: 196212736
Equivalent to 11 /8s, 177 /16s and 248 /24s
Percentage of available ARIN address space announced: 73.1
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: 22248
Total RIPE prefixes after maximum aggregation: 16288
Prefixes being announced from the RIPE address blocks: 18844
Unique aggregates announced from the RIPE address blocks: 12605
RIPE Region origin ASes present in the Internet Routing Table: 4762
RIPE Region origin ASes announcing only one prefix: 2603
RIPE Region transit ASes present in the Internet Routing Table: 841
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 134272064
Equivalent to 8 /8s, 0 /16s and 212 /24s
Percentage of available RIPE address space announced: 72.8
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: 5326
Total LACNIC prefixes after maximum aggregation: 2270
Prefixes being announced from the LACNIC address blocks: 4821
Unique aggregates announced from the LACNIC address blocks: 3097
LACNIC Region origin ASes present in the Internet Routing Table: 343
LACNIC Region origin ASes announcing only one prefix: 94
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12900096
Equivalent to 0 /8s, 196 /16s and 215 /24s
Percentage of available LACNIC address space announced: 38.4
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 1045 1038 737 Telstra Pty Ltd
4755 440 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1912 351 SINET Japan
703 332 370 266 UUNET
17557 326 22 137 Pakistan Telecom
2764 297 323 268 connect.com.au pty ltd
7474 261 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 239 777 205 DACOM Corporation
9583 239 37 20 Satyam Infoway Ltd.,
4134 232 2008 113 Data Communications Bureau
4766 226 2461 169 Korea Internet Exchange for "
9800 195 314 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9929 169 153 33 China Netcom Corp.
4538 168 1506 21 China Education and Research
9498 159 11 31 BHARTI BT INTERNET LTD.
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1489 8778 1050 UUNET Technologies, Inc.
7018 1370 7167 955 AT&T
1239 965 2983 665 Sprint
3908 906 1534 484 Supernet, Inc.
7132 855 6604 236 Southwestern Bell Internet Se
189 670 371 323 Genuity
18566 646 160 8 Covad Communications
4323 621 549 172 Time Warner Communications, I
7843 601 396 222 Adelphia Corp.
6197 561 440 200 BellSouth Network Solutions,
852 523 1124 415 Telus Advanced Communications
209 522 2192 303 Qwest
1 513 1196 335 GENUITY
6198 499 271 188 BellSouth Network Solutions,
7066 489 205 259 Virginia Polytechnic Institut
705 482 190 305 UUNET Technologies, Inc.
20115 472 196 283 Charter Communications
3356 440 10683 362 Level 3 Communications, LLC
690 435 63 287 Merit Network
4355 402 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 730 2107 610 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 288 1169 276 TeliaNet Sweden
3320 259 1987 221 Deutsche Telekom AG
8220 247 432 235 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 229 309 185 SWIPnet Swedish IP Network
3215 212 736 120 France Telecom Transpac
5515 186 795 150 Sonera Solution Autonomous Sy
786 178 1858 178 The JANET IP Service
5400 164 157 116 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 142 548 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 121 374 119 Song Networks
3269 116 817 63 TELECOM ITALIA
3352 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 44 SITA
5511 100 179 77 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 291 98 107 ImpSat
7303 239 39 57 Telecom Argentina Stet-France
8151 218 334 116 UniNet S.A. de C.V.
11172 177 69 42 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 132 205 92 AVANTEL, S.A.
10620 123 8 34 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 88 8 32 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
11830 71 5 31 Instituto Costarricense de El
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 646 638 Covad Communications
7132 855 619 Southwestern Bell Internet Se
4323 621 449 Time Warner Communications, I
3908 906 422 Supernet, Inc.
7018 1370 415 AT&T
7843 601 379 Adelphia Corp.
4755 440 369 Videsh Sanchar Nigam Ltd. Aut
6197 561 361 BellSouth Network Solutions,
189 670 347 Genuity
11305 358 320 Interland Incorporated
6198 499 311 BellSouth Network Solutions,
1221 1045 308 Telstra Pty Ltd
1239 965 300 Sprint
27364 317 298 Armstrong Cable Services
4355 402 293 EarthLink, Inc.
6347 362 281 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 359 244 Reseau Interordinateurs Scien
17676 250 231 XTAGE CORPORATION
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 1880 Stupi, house man's p
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 /9:5 /10:8 /11:13 /12:54
/13:98 /14:262 /15:474 /16:7421 /17:1743 /18:3060
/19:8652 /20:8689 /21:6328 /22:9305 /23:10813 /24:69731
/25:162 /26:275 /27:165 /28:28 /29:11 /30:47
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 640 646 Covad Communications
189 592 670 Genuity
3908 578 906 Supernet, Inc.
7018 483 1370 AT&T
702 445 730 UUNET - Commercial IP service
701 430 1489 UUNET Technologies, Inc.
6197 427 561 BellSouth Network Solutions,
690 394 435 Merit Network
6198 390 499 BellSouth Network Solutions,
7066 386 489 Virginia Polytechnic Institut
1239 367 965 Sprint
7843 333 601 Adelphia Corp.
20115 321 472 Charter Communications
27364 311 317 Armstrong Cable Services
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 402 EarthLink, Inc.
1 209 513 GENUITY
209 209 522 Qwest
705 202 482 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:708 13:1 15:4 16:1 17:3
20:6 24:863 25:1 32:98 38:43 40:23
44:2 57:15 61:287 62:388 63:1883 64:1728
65:2003 66:2651 67:213 68:400 69:241 80:394
81:118 82:9 128:133 129:167 130:58 131:81
132:13 134:173 135:7 136:122 137:118 138:118
139:46 140:138 141:115 142:94 143:44 144:99
145:13 146:280 147:59 148:299 149:64 150:104
151:62 152:219 153:57 154:3 155:119 156:56
157:47 158:119 159:137 160:47 161:75 162:410
163:81 164:322 165:143 166:97 167:320 168:179
169:91 170:324 171:8 192:5326 193:2465 194:1981
195:1149 196:473 198:3579 199:2720 200:2977 202:3940
203:5282 204:2962 205:2031 206:2320 207:2423 208:2565
209:2860 210:878 211:288 212:1005 213:891 214:15
215:22 216:3271 217:690 218:96 219:69 220:98
221:9
End of report
