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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 13 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127581
Prefixes after maximum aggregation: 79867
Unique aggregates announced to Internet: 60818
Total ASes present in the Internet Routing Table: 15676
Origin-only ASes present in the Internet Routing Table: 13585
Origin ASes announcing only one prefix: 6193
Transit ASes present in the Internet Routing Table: 2091
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: 15
Number of addresses announced to Internet: 1237673280
Equivalent to 73 /8s, 197 /16s and 101 /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: 56570
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22228
Total APNIC prefixes after maximum aggregation: 12704
Prefixes being announced from the APNIC address blocks: 20645
Unique aggregates announced from the APNIC address blocks: 12311
APNIC Region origin ASes present in the Internet Routing Table: 1880
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 313
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120018048
Equivalent to 7 /8s, 39 /16s and 84 /24s
Percentage of available APNIC address space announced: 64.7
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: 77733
Total ARIN prefixes after maximum aggregation: 48598
Prefixes being announced from the ARIN address blocks: 55493
Unique aggregates announced from the ARIN address blocks: 17093
ARIN Region origin ASes present in the Internet Routing Table: 8600
ARIN Region origin ASes announcing only one prefix: 2953
ARIN Region transit ASes present in the Internet Routing Table: 828
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 195543808
Equivalent to 11 /8s, 167 /16s and 195 /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: 22338
Total RIPE prefixes after maximum aggregation: 16334
Prefixes being announced from the RIPE address blocks: 18956
Unique aggregates announced from the RIPE address blocks: 12679
RIPE Region origin ASes present in the Internet Routing Table: 4786
RIPE Region origin ASes announcing only one prefix: 2614
RIPE Region transit ASes present in the Internet Routing Table: 851
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134691840
Equivalent to 8 /8s, 7 /16s and 60 /24s
Percentage of available RIPE address space announced: 73.0
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: 5281
Total LACNIC prefixes after maximum aggregation: 2231
Prefixes being announced from the LACNIC address blocks: 4771
Unique aggregates announced from the LACNIC address blocks: 3085
LACNIC Region origin ASes present in the Internet Routing Table: 341
LACNIC Region origin ASes announcing only one prefix: 95
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 12326144
Equivalent to 0 /8s, 188 /16s and 21 /24s
Percentage of available LACNIC address space announced: 36.7
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 1038 1037 729 Telstra Pty Ltd
4755 401 136 71 Videsh Sanchar Nigam Ltd. Aut
2907 374 1895 349 SINET Japan
703 337 372 269 UUNET
4134 333 2146 114 Data Communications Bureau
17557 303 26 136 Pakistan Telecom
2764 299 323 269 connect.com.au pty ltd
7474 261 306 204 Optus Communications Pty Ltd
17676 252 3878 21 XTAGE CORPORATION
9583 241 37 20 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
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 23 BHARTI BT INTERNET LTD.
9238 140 9 21 TATA ISP
4739 139 58 128 Commerical Internet eXchange
4716 131 729 125 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1485 8778 1046 UUNET Technologies, Inc.
7018 1376 7219 970 AT&T
1239 934 3028 654 Sprint
3908 912 1539 488 Supernet, Inc.
7132 817 6604 237 Southwestern Bell Internet Se
189 673 371 321 Genuity
18566 654 160 8 Covad Communications
4323 619 551 177 Time Warner Communications, I
6197 564 387 245 BellSouth Network Solutions,
7843 550 401 204 Adelphia Corp.
209 523 2194 303 Qwest
852 523 1124 415 Telus Advanced Communications
6198 503 271 190 BellSouth Network Solutions,
1 494 1146 322 GENUITY
7066 489 205 260 Virginia Polytechnic Institut
705 482 192 303 UUNET Technologies, Inc.
20115 473 196 284 Charter Communications
3356 451 10717 377 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
702 735 2139 611 UUNET - Commercial IP service
719 312 307 125 LANLINK autonomous system
3301 291 1186 279 TeliaNet Sweden
3320 260 1987 222 Deutsche Telekom AG
8220 246 432 234 COLT Internet - International
1257 238 311 190 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
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 138 540 135 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 376 120 Song Networks
3269 116 819 63 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 236 39 54 Telecom Argentina Stet-France
8151 218 334 117 UniNet S.A. de C.V.
11172 179 77 43 Servicios Alestra S.A de C.V
16814 135 9 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 125 8 31 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 86 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
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
4926 55 3 46 Telintar S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 654 646 Covad Communications
7132 817 580 Southwestern Bell Internet Se
4323 619 442 Time Warner Communications, I
3908 912 424 Supernet, Inc.
7018 1376 406 AT&T
189 673 352 Genuity
7843 550 346 Adelphia Corp.
4755 401 330 Videsh Sanchar Nigam Ltd. Aut
11305 358 320 Interland Incorporated
6197 564 319 BellSouth Network Solutions,
6198 503 313 BellSouth Network Solutions,
1221 1038 309 Telstra Pty Ltd
27364 317 298 Armstrong Cable Services
4355 405 294 EarthLink, Inc.
1239 934 280 Sprint
6347 360 280 SAVVIS Communications Corpora
22909 284 271 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 358 243 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 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 *
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 /12:56
/13:98 /14:263 /15:475 /16:7405 /17:1735 /18:3081
/19:8683 /20:8681 /21:6341 /22:9371 /23:10825 /24:69794
/25:167 /26:275 /27:173 /28:27 /29:12 /30:49
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 648 654 Covad Communications
189 595 673 Genuity
3908 581 912 Supernet, Inc.
7018 470 1376 AT&T
702 448 735 UUNET - Commercial IP service
701 430 1485 UUNET Technologies, Inc.
6197 429 564 BellSouth Network Solutions,
6198 394 503 BellSouth Network Solutions,
7066 386 489 Virginia Polytechnic Institut
690 362 402 Merit Network
1239 339 934 Sprint
20115 322 473 Charter Communications
27364 311 317 Armstrong Cable Services
7843 282 550 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.
209 209 523 Qwest
1 206 494 GENUITY
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:714 13:1 15:4 16:1 17:3
20:6 24:855 25:1 32:98 38:46 40:23
44:2 57:14 61:291 62:385 63:1867 64:1737
65:2012 66:2646 67:224 68:383 69:245 80:398
81:121 82:10 128:130 129:168 130:50 131:80
132:13 134:175 135:7 136:122 137:117 138:121
139:46 140:140 141:117 142:93 143:45 144:93
145:13 146:280 147:59 148:300 149:72 150:104
151:63 152:212 153:57 154:3 155:121 156:55
157:47 158:119 159:136 160:46 161:74 162:407
163:81 164:313 165:139 166:96 167:313 168:182
169:92 170:316 171:8 192:5408 193:2470 194:1989
195:1150 196:470 198:3598 199:2736 200:2981 202:3948
203:5195 204:2956 205:2026 206:2322 207:2425 208:2559
209:2880 210:892 211:305 212:1010 213:914 214:16
215:21 216:3241 217:683 218:101 219:76 220:98
221:10
End of report
