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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 17 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127556
Prefixes after maximum aggregation: 79508
Unique aggregates announced to Internet: 60377
Total ASes present in the Internet Routing Table: 15528
Origin-only ASes present in the Internet Routing Table: 13457
Origin ASes announcing only one prefix: 6118
Transit ASes present in the Internet Routing Table: 2071
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: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1238883200
Equivalent to 73 /8s, 215 /16s and 219 /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: 56628
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22092
Total APNIC prefixes after maximum aggregation: 12662
Prefixes being announced from the APNIC address blocks: 20516
Unique aggregates announced from the APNIC address blocks: 12392
APNIC Region origin ASes present in the Internet Routing Table: 1858
APNIC Region origin ASes announcing only one prefix: 533
APNIC Region transit ASes present in the Internet Routing Table: 301
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 117484576
Equivalent to 7 /8s, 0 /16s and 172 /24s
Percentage of available APNIC address space announced: 63.3
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: 77716
Total ARIN prefixes after maximum aggregation: 48374
Prefixes being announced from the ARIN address blocks: 55437
Unique aggregates announced from the ARIN address blocks: 16778
ARIN Region origin ASes present in the Internet Routing Table: 8529
ARIN Region origin ASes announcing only one prefix: 2914
ARIN Region transit ASes present in the Internet Routing Table: 826
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194903040
Equivalent to 11 /8s, 157 /16s and 252 /24s
Percentage of available ARIN address space announced: 72.6
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: 22402
Total RIPE prefixes after maximum aggregation: 16187
Prefixes being announced from the RIPE address blocks: 18912
Unique aggregates announced from the RIPE address blocks: 12529
RIPE Region origin ASes present in the Internet Routing Table: 4731
RIPE Region origin ASes announcing only one prefix: 2579
RIPE Region transit ASes present in the Internet Routing Table: 845
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133817024
Equivalent to 7 /8s, 249 /16s and 226 /24s
Percentage of available RIPE address space announced: 72.5
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: 5345
Total LACNIC prefixes after maximum aggregation: 2285
Prefixes being announced from the LACNIC address blocks: 4798
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: 92
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: 24
Number of LACNIC addresses announced to Internet: 12849920
Equivalent to 0 /8s, 196 /16s and 19 /24s
Percentage of available LACNIC address space announced: 38.3
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 1050 1069 742 Telstra Pty Ltd
4755 448 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 373 1896 349 SINET Japan
17557 351 25 151 Pakistan Telecom
703 333 370 266 UUNET
2764 310 325 277 connect.com.au pty ltd
7474 285 306 201 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 238 37 21 Satyam Infoway Ltd.,
4134 230 1960 112 Data Communications Bureau
4766 223 2476 166 Korea Internet Exchange for "
9800 192 307 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 169 11 18 BHARTI BT INTERNET LTD.
4538 168 1506 21 China Education and Research
9929 163 153 33 China Netcom Corp.
4739 141 58 130 Commerical Internet eXchange
9238 138 8 20 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1526 8799 1072 UUNET Technologies, Inc.
7018 1345 7182 930 AT&T
1239 959 2998 665 Sprint
3908 896 1517 474 Supernet, Inc.
7132 843 6592 233 Southwestern Bell Internet Se
189 687 372 310 Genuity
18566 649 160 8 Covad Communications
4323 608 526 175 Time Warner Communications, I
7843 596 378 238 Adelphia Corp.
1 565 2439 380 GENUITY
11305 557 171 79 Interland Incorporated
6197 527 367 220 BellSouth Network Solutions,
852 525 1124 417 Telus Advanced Communications
209 515 2190 302 Qwest
7066 488 204 261 Virginia Polytechnic Institut
705 487 192 308 UUNET Technologies, Inc.
6198 483 269 181 BellSouth Network Solutions,
20115 463 195 284 Charter Communications
690 442 64 292 Merit Network
2386 407 541 232 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1013 2156 618 UUNET - Commercial IP service
719 311 307 125 LANLINK autonomous system
3301 291 1169 279 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
3215 240 801 136 France Telecom Transpac
8220 233 386 221 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 225 308 183 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 187 795 150 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 154 108 151 Romania Data Systems S.A.
3303 142 549 139 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 126 1315 117 BTnet UK Regional network
3246 122 373 118 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 111 796 32 Ibernet, Internet Access Netw
2647 98 4129 41 SITA
5511 98 179 75 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 298 98 106 ImpSat
7303 233 37 54 Telecom Argentina Stet-France
8151 220 350 117 UniNet S.A. de C.V.
11172 173 69 42 Servicios Alestra S.A de C.V
11340 140 4 48 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 133 189 96 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 87 8 37 Integrated Systems
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 70 5 32 Instituto Costarricense de El
4270 66 18 9 Red de Interconexion Universi
7927 66 6 40 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 63 36 8 Mega Cable S.A. de C.V.
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 649 641 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 557 478 Interland Incorporated
4323 608 433 Time Warner Communications, I
3908 896 422 Supernet, Inc.
7018 1345 415 AT&T
702 1013 395 UUNET - Commercial IP service
4755 448 378 Videsh Sanchar Nigam Ltd. Aut
189 687 377 Genuity
7843 596 358 Adelphia Corp.
1221 1050 308 Telstra Pty Ltd
6197 527 307 BellSouth Network Solutions,
6198 483 302 BellSouth Network Solutions,
1239 959 294 Sprint
4355 405 294 EarthLink, Inc.
27364 301 283 Armstrong Cable Services
6347 363 280 SAVVIS Communications Corpora
22909 279 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 373 250 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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 /10:8 /11:13 /12:54
/13:97 /14:261 /15:476 /16:7424 /17:1727 /18:3060
/19:8626 /20:8633 /21:6317 /22:9190 /23:10785 /24:70080
/25:177 /26:297 /27:199 /28:39 /29:22 /30:21
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 708 1013 UUNET - Commercial IP service
18566 643 649 Covad Communications
189 607 687 Genuity
3908 571 896 Supernet, Inc.
11305 483 557 Interland Incorporated
7018 473 1345 AT&T
701 434 1526 UUNET Technologies, Inc.
690 400 442 Merit Network
6197 398 527 BellSouth Network Solutions,
7066 384 488 Virginia Polytechnic Institut
6198 376 483 BellSouth Network Solutions,
1239 358 959 Sprint
7843 341 596 Adelphia Corp.
20115 320 463 Charter Communications
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 405 EarthLink, Inc.
1 212 565 GENUITY
3320 210 269 Deutsche Telekom AG
705 205 487 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:702 13:1 15:4 16:1 17:3
20:6 24:857 25:1 32:98 38:42 40:22
44:2 57:15 61:274 62:375 63:1880 64:1783
65:1972 66:2569 67:200 68:376 69:216 80:393
81:121 82:6 128:132 129:228 130:58 131:81
132:24 134:174 135:7 136:122 137:117 138:114
139:42 140:174 141:118 142:94 143:44 144:88
145:13 146:281 147:61 148:291 149:62 150:95
151:70 152:231 153:101 154:3 155:119 156:56
157:46 158:122 159:140 160:45 161:75 162:375
163:79 164:320 165:139 166:96 167:318 168:174
169:112 170:318 171:8 192:5342 193:2591 194:1980
195:1136 196:470 198:3584 199:2731 200:2962 202:3915
203:5278 204:2983 205:2058 206:2320 207:2431 208:2598
209:2874 210:861 211:365 212:1030 213:866 214:19
215:23 216:3435 217:675 218:94 219:66 220:97
221:8
End of report
