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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 10 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127681
Prefixes after maximum aggregation: 79826
Unique aggregates announced to Internet: 60773
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: 6160
Transit ASes present in the Internet Routing Table: 2085
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.7
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: 1237204864
Equivalent to 73 /8s, 190 /16s and 63 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56620
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22201
Total APNIC prefixes after maximum aggregation: 12644
Prefixes being announced from the APNIC address blocks: 20637
Unique aggregates announced from the APNIC address blocks: 12292
APNIC Region origin ASes present in the Internet Routing Table: 1873
APNIC Region origin ASes announcing only one prefix: 528
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: 118908288
Equivalent to 7 /8s, 22 /16s and 101 /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: 77770
Total ARIN prefixes after maximum aggregation: 48578
Prefixes being announced from the ARIN address blocks: 55528
Unique aggregates announced from the ARIN address blocks: 17065
ARIN Region origin ASes present in the Internet Routing Table: 8592
ARIN Region origin ASes announcing only one prefix: 2938
ARIN Region transit ASes present in the Internet Routing Table: 827
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195458816
Equivalent to 11 /8s, 166 /16s and 119 /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: 22356
Total RIPE prefixes after maximum aggregation: 16337
Prefixes being announced from the RIPE address blocks: 18959
Unique aggregates announced from the RIPE address blocks: 12655
RIPE Region origin ASes present in the Internet Routing Table: 4770
RIPE Region origin ASes announcing only one prefix: 2597
RIPE Region transit ASes present in the Internet Routing Table: 850
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134567232
Equivalent to 8 /8s, 5 /16s and 85 /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: 5353
Total LACNIC prefixes after maximum aggregation: 2267
Prefixes being announced from the LACNIC address blocks: 4836
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 443 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 371 1863 346 SINET Japan
703 337 370 269 UUNET
4134 332 2146 113 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 170 1538 21 China Education and Research
9929 165 151 32 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 1484 8778 1045 UUNET Technologies, Inc.
7018 1371 7151 955 AT&T
1239 937 2998 657 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.
209 522 2193 302 Qwest
852 521 1123 413 Telus Advanced Communications
1 507 1179 329 GENUITY
6198 501 271 190 BellSouth Network Solutions,
7066 487 205 260 Virginia Polytechnic Institut
705 482 192 303 UUNET Technologies, Inc.
20115 473 196 284 Charter Communications
3356 445 10699 366 Level 3 Communications, LLC
4355 405 339 111 EarthLink, Inc.
2386 400 543 229 AT&T Data Communications Serv
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 257 1985 219 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
786 179 1874 179 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 289 98 105 ImpSat
7303 237 39 55 Telecom Argentina Stet-France
8151 221 334 118 UniNet S.A. de C.V.
11172 176 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 86 8 31 Integrated Systems
6147 83 70 20 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 1371 416 AT&T
4755 443 372 Videsh Sanchar Nigam Ltd. Aut
189 670 346 Genuity
7843 558 343 Adelphia Corp.
6197 563 320 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 501 311 BellSouth Network Solutions,
1221 1040 308 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 405 294 EarthLink, Inc.
1239 937 280 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 /12:54
/13:99 /14:263 /15:475 /16:7412 /17:1737 /18:3096
/19:8688 /20:8703 /21:6334 /22:9344 /23:10827 /24:69864
/25:168 /26:281 /27:172 /28:26 /29:11 /30:57
/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 484 1371 AT&T
702 446 733 UUNET - Commercial IP service
701 430 1484 UUNET Technologies, Inc.
6197 428 563 BellSouth Network Solutions,
6198 392 501 BellSouth Network Solutions,
7066 384 487 Virginia Polytechnic Institut
690 359 399 Merit Network
1239 339 937 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 223 228 XCOM Technologies, INC.
4355 219 405 EarthLink, Inc.
1 209 507 GENUITY
209 209 522 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:712 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 62:384 63:1874 64:1730
65:2014 66:2652 67:222 68:385 69:245 80:397
81:121 82:10 128:135 129:169 130:50 131:81
132:15 134:174 135:7 136:120 137:118 138:120
139:46 140:138 141:116 142:94 143:45 144:98
145:13 146:279 147:59 148:300 149:71 150:104
151:63 152:212 153:57 154:3 155:119 156:55
157:47 158:118 159:136 160:47 161:74 162:407
163:81 164:322 165:146 166:96 167:320 168:181
169:92 170:317 171:8 192:5384 193:2459 194:1987
195:1158 196:469 198:3600 199:2738 200:2994 202:3937
203:5208 204:2957 205:2040 206:2323 207:2424 208:2566
209:2886 210:890 211:305 212:1032 213:910 214:16
215:22 216:3241 217:686 218:102 219:75 220:97
221:10
End of report
