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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 28 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125114
Prefixes after maximum aggregation: 78358
Unique aggregates announced to Internet: 59114
Total ASes present in the Internet Routing Table: 15087
Origin-only ASes present in the Internet Routing Table: 13083
Origin ASes announcing only one prefix: 5935
Transit ASes present in the Internet Routing Table: 2004
Transit-only ASes present in the Internet Routing Table: 73
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: 20
Number of addresses announced to Internet: 1224932352
Equivalent to 73 /8s, 2 /16s and 252 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54290
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21109
Total APNIC prefixes after maximum aggregation: 12276
Prefixes being announced from the APNIC address blocks: 19570
Unique aggregates announced from the APNIC address blocks: 11958
APNIC Region origin ASes present in the Internet Routing Table: 1784
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 300
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 110650080
Equivalent to 6 /8s, 152 /16s and 98 /24s
Percentage of available APNIC address space announced: 59.6
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: 77199
Total ARIN prefixes after maximum aggregation: 48082
Prefixes being announced from the ARIN address blocks: 55231
Unique aggregates announced from the ARIN address blocks: 16562
ARIN Region origin ASes present in the Internet Routing Table: 8356
ARIN Region origin ASes announcing only one prefix: 2858
ARIN Region transit ASes present in the Internet Routing Table: 796
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191326976
Equivalent to 11 /8s, 103 /16s and 107 /24s
Percentage of available ARIN address space announced: 71.3
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: 21516
Total RIPE prefixes after maximum aggregation: 15780
Prefixes being announced from the RIPE address blocks: 18075
Unique aggregates announced from the RIPE address blocks: 12065
RIPE Region origin ASes present in the Internet Routing Table: 4541
RIPE Region origin ASes announcing only one prefix: 2468
RIPE Region transit ASes present in the Internet Routing Table: 806
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 129321088
Equivalent to 7 /8s, 181 /16s and 72 /24s
Percentage of available RIPE address space announced: 70.1
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: 5289
Total LACNIC prefixes after maximum aggregation: 2220
Prefixes being announced from the LACNIC address blocks: 4753
Unique aggregates announced from the LACNIC address blocks: 2930
LACNIC Region origin ASes present in the Internet Routing Table: 332
LACNIC Region origin ASes announcing only one prefix: 88
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12445696
Equivalent to 0 /8s, 189 /16s and 232 /24s
Percentage of available LACNIC address space announced: 37.1
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 1101 1104 791 Telstra Pty Ltd
4755 408 136 74 Videsh Sanchar Nigam Ltd. Aut
703 398 383 312 UUNET
2907 382 1960 359 SINET Japan
17557 374 28 140 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 295 85 23 China Telecom (Group)
7474 270 276 206 Optus Communications Pty Ltd
17676 244 3766 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 224 2014 114 Data Communications Bureau
9583 222 33 14 Satyam Infoway Ltd.,
4766 214 2078 160 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 177 250 55 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1580 8923 1112 UUNET Technologies, Inc.
7018 1336 7142 926 AT&T
7132 959 6476 209 Southwestern Bell Internet Se
1239 958 3095 676 Sprint
4151 931 691 60 USDA
3908 917 1570 470 Supernet, Inc.
7843 732 409 189 Adelphia Corp.
1 729 2717 461 GENUITY
189 706 341 289 Genuity
4323 576 514 169 Time Warner Communications, I
852 546 1110 429 Telus Advanced Communications
18566 546 144 5 Covad Communications
705 528 278 233 UUNET Technologies, Inc.
2386 528 484 265 AT&T Data Communications Serv
3561 512 2357 334 Cable & Wireless USA
690 494 72 312 Merit Network
209 491 2120 292 Qwest
7066 483 204 257 Virginia Polytechnic Institut
6197 479 340 196 BellSouth Network Solutions,
20115 475 189 295 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 773 2186 643 UUNET - Commercial IP service
3301 309 1173 299 TeliaNet Sweden
3215 303 851 175 France Telecom Transpac
3320 265 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
5400 204 112 114 BT Ignite European Backbone
8220 198 364 187 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 102 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 293 98 107 ImpSat
7303 255 36 65 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 155 207 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
6147 91 62 20 Telefonica Del Peru
11992 87 8 36 Integrated Systems
1916 75 306 45 Fundacao de Amparo a Pesquisa
13999 74 36 8 Mega Cable S.A. de C.V.
6535 73 5 22 Chilesat Servicios Empresari
11340 73 2 23 Red Universitaria Nacional
8065 72 7 16 Empresas Publicas de Medellin
15311 72 28 36 Telefonica Empresas
4270 67 18 9 Red de Interconexion Universi
11830 65 4 25 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 931 871 USDA
7132 959 750 Southwestern Bell Internet Se
7843 732 543 Adelphia Corp.
18566 546 541 Covad Communications
3908 917 447 Supernet, Inc.
189 706 417 Genuity
7018 1336 410 AT&T
4323 576 407 Time Warner Communications, I
4755 408 334 Videsh Sanchar Nigam Ltd. Aut
1221 1101 310 Telstra Pty Ltd
705 528 295 UUNET Technologies, Inc.
6347 369 289 SAVVIS Communications Corpora
6197 479 283 BellSouth Network Solutions,
6198 458 283 BellSouth Network Solutions,
1239 958 282 Sprint
4355 386 278 EarthLink, Inc.
22927 288 275 TELEFONICA DE ARGENTINA
4814 295 272 China Telecom (Group)
1 729 268 GENUITY
2386 528 263 AT&T Data Communications Serv
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
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
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
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.254.0/24 705 UUNET Technologies, Inc.
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:7 /10:8 /11:13 /12:50
/13:93 /14:251 /15:464 /16:7377 /17:1670 /18:2963
/19:8369 /20:8353 /21:5998 /22:8957 /23:10557 /24:69516
/25:134 /26:182 /27:47 /28:25 /29:13 /30:24
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 573 917 Supernet, Inc.
18566 540 546 Covad Communications
702 480 773 UUNET - Commercial IP service
7843 474 732 Adelphia Corp.
7018 464 1336 AT&T
690 443 494 Merit Network
701 430 1580 UUNET Technologies, Inc.
7066 382 483 Virginia Polytechnic Institut
6198 361 458 BellSouth Network Solutions,
1239 357 958 Sprint
6197 357 479 BellSouth Network Solutions,
20115 341 475 Charter Communications
2386 321 528 AT&T Data Communications Serv
11305 311 334 Interland Incorporated
4814 282 295 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 729 GENUITY
3215 226 303 France Telecom Transpac
22927 226 288 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:694 13:1 15:4 17:3 20:8 24:818
25:1 32:85 38:121 40:18 44:2 55:1
57:16 61:437 62:536 63:1900 64:1549 65:1923
66:2397 67:171 68:359 69:117 80:354 81:145
128:156 129:178 130:45 131:82 132:11 133:2
134:152 135:4 136:108 137:108 138:109 139:66
140:142 141:106 142:94 143:42 144:101 145:15
146:270 147:94 148:276 149:72 150:43 151:68
152:246 153:57 154:2 155:109 156:46 157:40
158:124 159:144 160:37 161:74 162:142 163:76
164:311 165:140 166:93 167:331 168:397 169:57
170:319 171:7 192:5343 193:2415 194:1996 195:1005
196:462 198:3560 199:3614 200:2962 202:3745 203:5184
204:3073 205:2015 206:2426 207:2398 208:2644 209:2829
210:777 211:311 212:966 213:809 214:21 215:21
216:3358 217:625 218:90 219:19 220:92
End of report
