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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 11 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127693
Prefixes after maximum aggregation: 79896
Unique aggregates announced to Internet: 60857
Total ASes present in the Internet Routing Table: 15650
Origin-only ASes present in the Internet Routing Table: 13565
Origin ASes announcing only one prefix: 6162
Transit ASes present in the Internet Routing Table: 2085
Transit-only ASes present in the Internet Routing Table: 67
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: 14
Number of addresses announced to Internet: 1237251200
Equivalent to 73 /8s, 190 /16s and 244 /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: 56631
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22219
Total APNIC prefixes after maximum aggregation: 12713
Prefixes being announced from the APNIC address blocks: 20650
Unique aggregates announced from the APNIC address blocks: 12351
APNIC Region origin ASes present in the Internet Routing Table: 1876
APNIC Region origin ASes announcing only one prefix: 527
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 118938752
Equivalent to 7 /8s, 22 /16s and 220 /24s
Percentage of available APNIC address space announced: 64.1
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: 77781
Total ARIN prefixes after maximum aggregation: 48589
Prefixes being announced from the ARIN address blocks: 55521
Unique aggregates announced from the ARIN address blocks: 17073
ARIN Region origin ASes present in the Internet Routing Table: 8593
ARIN Region origin ASes announcing only one prefix: 2939
ARIN Region transit ASes present in the Internet Routing Table: 829
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195473408
Equivalent to 11 /8s, 166 /16s and 176 /24s
Percentage of available ARIN address space announced: 72.8
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: 22346
Total RIPE prefixes after maximum aggregation: 16328
Prefixes being announced from the RIPE address blocks: 18952
Unique aggregates announced from the RIPE address blocks: 12653
RIPE Region origin ASes present in the Internet Routing Table: 4767
RIPE Region origin ASes announcing only one prefix: 2599
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134566976
Equivalent to 8 /8s, 5 /16s and 84 /24s
Percentage of available RIPE address space announced: 72.9
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: 5346
Total LACNIC prefixes after maximum aggregation: 2266
Prefixes being announced from the LACNIC address blocks: 4834
Unique aggregates announced from the LACNIC address blocks: 3131
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 97
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: 12971520
Equivalent to 0 /8s, 197 /16s and 238 /24s
Percentage of available LACNIC address space announced: 38.7
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 1040 1038 732 Telstra Pty Ltd
4755 395 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 371 1879 346 SINET Japan
703 337 370 269 UUNET
4134 334 2146 114 Data Communications Bureau
17557 303 26 136 Pakistan Telecom
2764 300 323 270 connect.com.au pty ltd
7474 260 306 203 Optus Communications Pty Ltd
17676 252 3878 21 XTAGE CORPORATION
3786 239 777 205 DACOM Corporation
9583 239 37 20 Satyam Infoway Ltd.,
4766 238 2461 170 Korea Internet Exchange for "
9800 195 314 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 159 11 25 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 1477 8777 1042 UUNET Technologies, Inc.
7018 1376 7171 960 AT&T
1239 939 3030 659 Sprint
3908 913 1540 489 Supernet, Inc.
7132 816 6604 236 Southwestern Bell Internet Se
189 670 371 324 Genuity
18566 654 160 8 Covad Communications
4323 619 551 177 Time Warner Communications, I
6197 563 386 243 BellSouth Network Solutions,
7843 558 400 215 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 522 2193 302 Qwest
1 508 1163 330 GENUITY
6198 500 271 190 BellSouth Network Solutions,
7066 489 205 260 Virginia Polytechnic Institut
705 483 192 304 UUNET Technologies, Inc.
20115 473 196 284 Charter Communications
3356 436 10698 363 Level 3 Communications, LLC
4355 405 339 111 EarthLink, Inc.
690 402 59 271 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 733 2139 611 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 291 1186 279 TeliaNet Sweden
3320 258 1987 220 Deutsche Telekom AG
8220 246 432 234 COLT Internet - International
680 233 2054 230 DFN-IP service G-WiN
1257 231 309 187 SWIPnet Swedish IP Network
3215 212 736 120 France Telecom Transpac
5515 185 779 149 Sonera Solution Autonomous Sy
786 178 1858 178 The JANET IP Service
5400 168 157 119 BT Ignite European Backbone
8708 154 108 151 Romania Data Systems S.A.
3303 141 540 138 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 376 120 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 111 812 33 Ibernet, Internet Access Netw
2647 100 4129 44 SITA
9051 88 6 35 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 290 98 106 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 220 334 118 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 93 AVANTEL, S.A.
10620 125 8 31 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 87 8 31 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
11830 75 5 31 Instituto Costarricense de El
15311 74 14 38 Telefonica Empresas
1916 73 306 43 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
13999 63 36 8 Mega Cable S.A. de C.V.
7984 59 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 654 646 Covad Communications
7132 816 580 Southwestern Bell Internet Se
4323 619 442 Time Warner Communications, I
3908 913 424 Supernet, Inc.
7018 1376 416 AT&T
189 670 346 Genuity
7843 558 343 Adelphia Corp.
4755 395 324 Videsh Sanchar Nigam Ltd. Aut
6197 563 320 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 500 310 BellSouth Network Solutions,
1221 1040 308 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 405 294 EarthLink, Inc.
1239 939 280 Sprint
6347 359 280 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 357 243 Reseau Interordinateurs Scien
17676 252 231 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 /8:19 /9:5 /10:7 /11:13 /12:55
/13:99 /14:263 /15:475 /16:7413 /17:1735 /18:3099
/19:8690 /20:8703 /21:6340 /22:9343 /23:10834 /24:69856
/25:169 /26:280 /27:172 /28:27 /29:12 /30:58
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 648 654 Covad Communications
189 592 670 Genuity
3908 581 913 Supernet, Inc.
7018 485 1376 AT&T
702 446 733 UUNET - Commercial IP service
701 430 1477 UUNET Technologies, Inc.
6197 428 563 BellSouth Network Solutions,
6198 391 500 BellSouth Network Solutions,
7066 386 489 Virginia Polytechnic Institut
690 362 402 Merit Network
1239 339 939 Sprint
20115 322 473 Charter Communications
27364 311 317 Armstrong Cable Services
7843 291 558 Adelphia Corp.
11305 281 358 Interland Incorporated
25844 258 258 Skadden, Arps, Slate, Meagher
10753 224 229 XCOM Technologies, INC.
4355 219 405 EarthLink, Inc.
1 210 508 GENUITY
209 209 522 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:711 13:1 15:4 16:1 17:3
20:6 24:857 25:1 32:98 38:46 40:23
44:2 57:14 61:291 62:385 63:1871 64:1732
65:2015 66:2653 67:222 68:383 69:245 80:397
81:119 82:10 128:134 129:169 130:47 131:80
132:15 134:174 135:7 136:120 137:118 138:120
139:46 140:137 141:115 142:94 143:45 144:97
145:13 146:279 147:59 148:300 149:71 150:104
151:63 152:212 153:57 154:3 155:119 156:55
157:47 158:118 159:136 160:46 161:74 162:407
163:77 164:324 165:146 166:96 167:320 168:181
169:92 170:317 171:8 192:5406 193:2465 194:1984
195:1159 196:470 198:3593 199:2735 200:2992 202:3928
203:5206 204:2954 205:2036 206:2322 207:2424 208:2562
209:2893 210:892 211:305 212:1035 213:911 214:16
215:22 216:3242 217:686 218:102 219:75 220:97
221:10
End of report
