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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 22 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127443
Prefixes after maximum aggregation: 79582
Unique aggregates announced to Internet: 60353
Total ASes present in the Internet Routing Table: 15547
Origin-only ASes present in the Internet Routing Table: 13477
Origin ASes announcing only one prefix: 6116
Transit ASes present in the Internet Routing Table: 2070
Transit-only ASes present in the Internet Routing Table: 69
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1222180736
Equivalent to 72 /8s, 216 /16s and 255 /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: 56626
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22120
Total APNIC prefixes after maximum aggregation: 12710
Prefixes being announced from the APNIC address blocks: 20558
Unique aggregates announced from the APNIC address blocks: 12444
APNIC Region origin ASes present in the Internet Routing Table: 1864
APNIC Region origin ASes announcing only one prefix: 534
APNIC Region transit ASes present in the Internet Routing Table: 309
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 117867040
Equivalent to 7 /8s, 6 /16s and 130 /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: 77584
Total ARIN prefixes after maximum aggregation: 48354
Prefixes being announced from the ARIN address blocks: 55375
Unique aggregates announced from the ARIN address blocks: 16774
ARIN Region origin ASes present in the Internet Routing Table: 8535
ARIN Region origin ASes announcing only one prefix: 2900
ARIN Region transit ASes present in the Internet Routing Table: 817
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194872352
Equivalent to 11 /8s, 157 /16s and 132 /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: 22391
Total RIPE prefixes after maximum aggregation: 16228
Prefixes being announced from the RIPE address blocks: 18890
Unique aggregates announced from the RIPE address blocks: 12530
RIPE Region origin ASes present in the Internet Routing Table: 4737
RIPE Region origin ASes announcing only one prefix: 2590
RIPE Region transit ASes present in the Internet Routing Table: 844
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133793472
Equivalent to 7 /8s, 249 /16s and 134 /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: 5347
Total LACNIC prefixes after maximum aggregation: 2290
Prefixes being announced from the LACNIC address blocks: 4789
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: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 12865024
Equivalent to 0 /8s, 196 /16s and 78 /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 1051 1069 739 Telstra Pty Ltd
4755 435 136 70 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 347 24 150 Pakistan Telecom
703 329 369 262 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 241 37 22 Satyam Infoway Ltd.,
4134 233 2008 113 Data Communications Bureau
4766 222 2476 165 Korea Internet Exchange for "
9800 192 307 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
4538 168 1506 21 China Education and Research
9929 164 153 33 China Netcom Corp.
9498 163 11 26 BHARTI BT INTERNET LTD.
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 8800 1072 UUNET Technologies, Inc.
7018 1343 7165 927 AT&T
1239 962 2999 668 Sprint
3908 898 1550 477 Supernet, Inc.
7132 843 6592 233 Southwestern Bell Internet Se
189 689 372 312 Genuity
18566 636 160 8 Covad Communications
4323 608 526 175 Time Warner Communications, I
7843 584 364 261 Adelphia Corp.
11305 569 172 85 Interland Incorporated
1 561 2425 375 GENUITY
6197 540 368 233 BellSouth Network Solutions,
852 524 1124 416 Telus Advanced Communications
209 521 2190 302 Qwest
6198 483 270 181 BellSouth Network Solutions,
705 482 190 306 UUNET Technologies, Inc.
20115 473 195 284 Charter Communications
7066 472 202 241 Virginia Polytechnic Institut
690 446 64 296 Merit Network
4355 403 338 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1010 2156 613 UUNET - Commercial IP service
719 311 307 125 LANLINK autonomous system
3301 292 1169 280 TeliaNet Sweden
3320 269 2004 230 Deutsche Telekom AG
3215 238 801 135 France Telecom Transpac
8220 233 402 221 COLT Internet - International
680 232 2053 229 DFN-IP service G-WiN
1257 222 307 180 SWIPnet Swedish IP Network
5400 200 158 117 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 298 98 106 ImpSat
7303 237 37 57 Telecom Argentina Stet-France
8151 219 334 116 UniNet S.A. de C.V.
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 131 205 93 AVANTEL, S.A.
10620 120 8 33 TVCABLE BOGOTA
6147 95 70 21 Telefonica Del Peru
11992 89 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 67 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
13999 61 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 636 628 Covad Communications
7132 843 610 Southwestern Bell Internet Se
11305 569 484 Interland Incorporated
4323 608 433 Time Warner Communications, I
3908 898 421 Supernet, Inc.
7018 1343 416 AT&T
702 1010 397 UUNET - Commercial IP service
189 689 377 Genuity
4755 435 365 Videsh Sanchar Nigam Ltd. Aut
7843 584 323 Adelphia Corp.
1221 1051 312 Telstra Pty Ltd
6197 540 307 BellSouth Network Solutions,
6198 483 302 BellSouth Network Solutions,
1239 962 294 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
376 359 244 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 /16:7423 /17:1731 /18:3062
/19:8646 /20:8627 /21:6298 /22:9206 /23:10792 /24:69938
/25:180 /26:298 /27:199 /28:39 /29:24 /30:21
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 704 1010 UUNET - Commercial IP service
18566 630 636 Covad Communications
189 609 689 Genuity
3908 571 898 Supernet, Inc.
11305 495 569 Interland Incorporated
7018 473 1343 AT&T
701 433 1526 UUNET Technologies, Inc.
6197 411 540 BellSouth Network Solutions,
690 404 446 Merit Network
6198 377 483 BellSouth Network Solutions,
7066 375 472 Virginia Polytechnic Institut
1239 359 962 Sprint
7843 343 584 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.
1 212 561 GENUITY
3320 210 269 Deutsche Telekom AG
209 206 521 Qwest
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:707 13:1 15:4 16:1 17:3
20:6 24:860 25:1 32:99 38:41 40:22
44:2 57:15 61:279 62:374 63:1867 64:1785
65:1972 66:2597 67:202 68:377 69:236 80:393
81:119 82:4 128:131 129:226 130:59 131:80
132:14 134:175 135:7 136:122 137:116 138:113
139:42 140:156 141:115 142:94 143:45 144:97
145:13 146:281 147:61 148:293 149:62 150:104
151:70 152:232 153:101 154:4 155:119 156:56
157:48 158:122 159:137 160:45 161:67 162:372
163:79 164:321 165:139 166:96 167:318 168:180
169:86 170:321 171:8 192:5326 193:2594 194:1972
195:1141 196:473 198:3568 199:2722 200:2954 202:3925
203:5276 204:2975 205:2051 206:2300 207:2409 208:2590
209:2868 210:866 211:352 212:1019 213:858 214:16
215:22 216:3419 217:679 218:95 219:67 220:97
221:8
End of report
