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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 21 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127439
Prefixes after maximum aggregation: 79505
Unique aggregates announced to Internet: 60304
Total ASes present in the Internet Routing Table: 15536
Origin-only ASes present in the Internet Routing Table: 13466
Origin ASes announcing only one prefix: 6109
Transit ASes present in the Internet Routing Table: 2070
Transit-only ASes present in the Internet Routing Table: 67
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 255
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: 1222019456
Equivalent to 72 /8s, 214 /16s and 137 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56639
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22097
Total APNIC prefixes after maximum aggregation: 12690
Prefixes being announced from the APNIC address blocks: 20516
Unique aggregates announced from the APNIC address blocks: 12399
APNIC Region origin ASes present in the Internet Routing Table: 1863
APNIC Region origin ASes announcing only one prefix: 537
APNIC Region transit ASes present in the Internet Routing Table: 307
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117831968
Equivalent to 7 /8s, 5 /16s and 249 /24s
Percentage of available APNIC address space announced: 63.5
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: 77594
Total ARIN prefixes after maximum aggregation: 48311
Prefixes being announced from the ARIN address blocks: 55381
Unique aggregates announced from the ARIN address blocks: 16779
ARIN Region origin ASes present in the Internet Routing Table: 8535
ARIN Region origin ASes announcing only one prefix: 2897
ARIN Region transit ASes present in the Internet Routing Table: 818
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194802464
Equivalent to 11 /8s, 156 /16s and 115 /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: 22365
Total RIPE prefixes after maximum aggregation: 16197
Prefixes being announced from the RIPE address blocks: 18880
Unique aggregates announced from the RIPE address blocks: 12512
RIPE Region origin ASes present in the Internet Routing Table: 4728
RIPE Region origin ASes announcing only one prefix: 2582
RIPE Region transit ASes present in the Internet Routing Table: 846
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133746112
Equivalent to 7 /8s, 248 /16s and 205 /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: 5382
Total LACNIC prefixes after maximum aggregation: 2307
Prefixes being announced from the LACNIC address blocks: 4813
Unique aggregates announced from the LACNIC address blocks: 3096
LACNIC Region origin ASes present in the Internet Routing Table: 342
LACNIC Region origin ASes announcing only one prefix: 93
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 28
Number of LACNIC addresses announced to Internet: 12869120
Equivalent to 0 /8s, 196 /16s and 94 /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 1043 1069 736 Telstra Pty Ltd
4755 435 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 355 25 152 Pakistan Telecom
703 330 370 263 UUNET
2764 308 325 275 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 240 37 22 Satyam Infoway Ltd.,
4134 230 2008 113 Data Communications Bureau
4766 221 2459 164 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 167 1506 21 China Education and Research
9929 164 153 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 1523 8800 1069 UUNET Technologies, Inc.
7018 1343 7165 928 AT&T
1239 960 2999 666 Sprint
3908 898 1550 477 Supernet, Inc.
7132 843 6592 233 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 638 160 8 Covad Communications
4323 607 510 174 Time Warner Communications, I
7843 599 379 239 Adelphia Corp.
1 562 2441 376 GENUITY
11305 558 171 79 Interland Incorporated
6197 541 368 233 BellSouth Network Solutions,
852 524 1124 416 Telus Advanced Communications
209 521 2190 302 Qwest
7066 489 204 258 Virginia Polytechnic Institut
6198 483 270 181 BellSouth Network Solutions,
705 480 190 304 UUNET Technologies, Inc.
20115 473 195 284 Charter Communications
690 444 64 295 Merit Network
4355 403 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1009 2156 612 UUNET - Commercial IP service
719 311 307 125 LANLINK autonomous system
3301 290 1169 278 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
3215 240 801 136 France Telecom Transpac
680 233 2054 230 DFN-IP service G-WiN
8220 232 386 220 COLT Internet - International
1257 221 303 179 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 185 794 150 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8708 154 108 151 Romania Data Systems S.A.
3303 143 548 140 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
5511 98 179 75 France Telecom
2647 97 4129 41 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 296 98 106 ImpSat
8151 239 336 130 UniNet S.A. de C.V.
7303 238 37 57 Telecom Argentina Stet-France
11172 177 69 42 Servicios Alestra S.A de C.V
11340 141 4 51 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 134 205 96 AVANTEL, S.A.
10620 120 8 33 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 87 8 36 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 69 5 31 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 62 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 638 630 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 558 479 Interland Incorporated
4323 607 433 Time Warner Communications, I
3908 898 421 Supernet, Inc.
7018 1343 415 AT&T
702 1009 397 UUNET - Commercial IP service
189 689 377 Genuity
4755 435 365 Videsh Sanchar Nigam Ltd. Aut
7843 599 360 Adelphia Corp.
6197 541 308 BellSouth Network Solutions,
1221 1043 307 Telstra Pty Ltd
6198 483 302 BellSouth Network Solutions,
1239 960 294 Sprint
4355 403 294 EarthLink, Inc.
27364 301 283 Armstrong Cable Services
6347 355 272 SAVVIS Communications Corpora
22909 280 266 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 372 246 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
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
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 /8:18 /9:5 /10:8 /11:13 /12:54
/13:97 /14:261 /15:477 /16:7425 /17:1725 /18:3049
/19:8644 /20:8637 /21:6302 /22:9198 /23:10790 /24:69956
/25:179 /26:296 /27:198 /28:39 /29:24 /30:18
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 703 1009 UUNET - Commercial IP service
18566 632 638 Covad Communications
189 609 689 Genuity
3908 571 898 Supernet, Inc.
11305 484 558 Interland Incorporated
7018 472 1343 AT&T
701 433 1523 UUNET Technologies, Inc.
6197 412 541 BellSouth Network Solutions,
690 402 444 Merit Network
7066 387 489 Virginia Polytechnic Institut
6198 377 483 BellSouth Network Solutions,
1239 357 960 Sprint
7843 343 599 Adelphia Corp.
20115 324 473 Charter Communications
27364 295 301 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
4355 216 403 EarthLink, Inc.
1 212 562 GENUITY
3320 210 269 Deutsche Telekom AG
209 206 521 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:708 13:1 15:4 16:1 17:3
20:6 24:860 25:1 32:99 38:41 40:22
44:2 57:15 61:278 62:375 63:1868 64:1786
65:1973 66:2592 67:201 68:377 69:235 80:395
81:116 82:4 128:131 129:225 130:59 131:76
132:25 134:175 135:7 136:122 137:114 138:113
139:42 140:157 141:115 142:94 143:45 144:95
145:13 146:281 147:61 148:337 149:62 150:104
151:70 152:230 153:102 154:3 155:119 156:56
157:46 158:122 159:136 160:45 161:75 162:375
163:77 164:320 165:139 166:95 167:318 168:173
169:86 170:321 171:8 192:5323 193:2583 194:1972
195:1139 196:469 198:3564 199:2718 200:2974 202:3914
203:5256 204:2973 205:2052 206:2309 207:2423 208:2590
209:2860 210:865 211:361 212:1020 213:860 214:16
215:22 216:3416 217:680 218:92 219:66 220:97
221:8
End of report
