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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 21 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124407
Prefixes after maximum aggregation: 78180
Unique aggregates announced to Internet: 58911
Total ASes present in the Internet Routing Table: 15035
Origin-only ASes present in the Internet Routing Table: 13043
Origin ASes announcing only one prefix: 5915
Transit ASes present in the Internet Routing Table: 1992
Transit-only ASes present in the Internet Routing Table: 74
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1224588800
Equivalent to 72 /8s, 253 /16s and 190 /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: 54009
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20845
Total APNIC prefixes after maximum aggregation: 12258
Prefixes being announced from the APNIC address blocks: 19280
Unique aggregates announced from the APNIC address blocks: 11883
APNIC Region origin ASes present in the Internet Routing Table: 1771
APNIC Region origin ASes announcing only one prefix: 515
APNIC Region transit ASes present in the Internet Routing Table: 293
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110374624
Equivalent to 6 /8s, 148 /16s and 46 /24s
Percentage of available APNIC address space announced: 59.5
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: 76882
Total ARIN prefixes after maximum aggregation: 47947
Prefixes being announced from the ARIN address blocks: 55019
Unique aggregates announced from the ARIN address blocks: 16404
ARIN Region origin ASes present in the Internet Routing Table: 8336
ARIN Region origin ASes announcing only one prefix: 2850
ARIN Region transit ASes present in the Internet Routing Table: 792
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190869248
Equivalent to 11 /8s, 96 /16s and 111 /24s
Percentage of available ARIN address space announced: 71.1
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: 21396
Total RIPE prefixes after maximum aggregation: 15756
Prefixes being announced from the RIPE address blocks: 17947
Unique aggregates announced from the RIPE address blocks: 12031
RIPE Region origin ASes present in the Internet Routing Table: 4522
RIPE Region origin ASes announcing only one prefix: 2462
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129033088
Equivalent to 7 /8s, 176 /16s and 227 /24s
Percentage of available RIPE address space announced: 69.9
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: 5282
Total LACNIC prefixes after maximum aggregation: 2219
Prefixes being announced from the LACNIC address blocks: 4703
Unique aggregates announced from the LACNIC address blocks: 2971
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: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12426752
Equivalent to 0 /8s, 189 /16s and 158 /24s
Percentage of available LACNIC address space announced: 37.0
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 1102 1104 792 Telstra Pty Ltd
703 395 381 310 UUNET
2907 384 1976 361 SINET Japan
17557 374 28 137 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 274 80 16 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 243 3750 22 XTAGE CORPORATION
4755 235 136 76 Videsh Sanchar Nigam Ltd. Aut
4134 225 2006 114 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1588 8924 1111 UUNET Technologies, Inc.
7018 1366 7175 945 AT&T
1239 969 3120 684 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 939 1571 479 Supernet, Inc.
4151 816 691 60 USDA
1 738 2753 471 GENUITY
189 705 341 290 Genuity
7843 684 402 178 Adelphia Corp.
4323 573 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
2386 510 482 273 AT&T Data Communications Serv
3561 509 2341 333 Cable & Wireless USA
209 496 2120 299 Qwest
690 494 72 312 Merit Network
7066 484 204 255 Virginia Polytechnic Institut
6197 481 340 196 BellSouth Network Solutions,
6198 457 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 771 2186 643 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 307 1173 297 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 200 98 111 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 157 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 106 734 32 Ibernet, Internet Access Netw
3233 105 11 12 RNC - Romanian Natioanal R&D
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 247 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 152 207 106 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 76 6 15 Empresas Publicas de Medellin
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
4270 67 18 10 Red de Interconexion Universi
11830 66 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 816 756 USDA
7132 959 750 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 684 506 Adelphia Corp.
3908 939 460 Supernet, Inc.
7018 1366 421 AT&T
189 705 415 Genuity
4323 573 404 Time Warner Communications, I
1221 1102 310 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 367 288 SAVVIS Communications Corpora
1239 969 285 Sprint
6197 481 285 BellSouth Network Solutions,
6198 457 282 BellSouth Network Solutions,
22927 296 282 TELEFONICA DE ARGENTINA
4355 384 275 EarthLink, Inc.
1 738 267 GENUITY
4814 274 258 China Telecom (Group)
27364 270 252 Armstrong Cable Services
2386 510 237 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
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
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 /9:4 /10:8 /11:13 /12:50
/13:93 /14:252 /15:463 /16:7382 /17:1669 /18:2966
/19:8346 /20:8304 /21:5971 /22:8888 /23:10572 /24:68913
/25:162 /26:192 /27:51 /28:25 /29:13 /30:24
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 595 939 Supernet, Inc.
18566 535 541 Covad Communications
7018 482 1366 AT&T
702 478 771 UUNET - Commercial IP service
690 443 494 Merit Network
701 440 1588 UUNET Technologies, Inc.
7843 429 684 Adelphia Corp.
7066 383 484 Virginia Polytechnic Institut
1239 364 969 Sprint
6198 360 457 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 305 510 AT&T Data Communications Serv
20115 294 425 Charter Communications
4814 264 274 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 738 GENUITY
3215 235 312 France Telecom Transpac
22927 235 296 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:679 13:1 15:4 17:3 20:9 24:816
25:1 32:84 38:65 40:19 44:2 55:1
57:16 61:428 62:525 63:1895 64:1529 65:1927
66:2364 67:166 68:359 69:111 80:335 81:119
128:155 129:177 130:45 131:82 132:11 133:2
134:154 135:4 136:112 137:111 138:108 139:66
140:147 141:92 142:94 143:44 144:113 145:14
146:270 147:93 148:277 149:72 150:44 151:68
152:246 153:57 154:2 155:106 156:45 157:40
158:124 159:144 160:37 161:75 162:137 163:77
164:312 165:134 166:84 167:329 168:404 169:57
170:315 171:7 192:5346 193:2428 194:1997 195:991
196:462 198:3553 199:3506 200:2934 202:3709 203:5064
204:3083 205:2006 206:2407 207:2399 208:2658 209:2816
210:750 211:339 212:984 213:791 214:18 215:21
216:3328 217:623 218:86 219:12 220:57
End of report
