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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 01 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123042
Prefixes after maximum aggregation: 78087
Unique aggregates announced to Internet: 59139
Total ASes present in the Internet Routing Table: 14905
Origin-only ASes present in the Internet Routing Table: 12917
Origin ASes announcing only one prefix: 5836
Transit ASes present in the Internet Routing Table: 1988
Transit-only ASes present in the Internet Routing Table: 75
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: 20
Number of addresses announced to Internet: 1221228165
Equivalent to 72 /8s, 202 /16s and 118 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 57889
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20664
Total APNIC prefixes after maximum aggregation: 12257
Prefixes being announced from the APNIC address blocks: 19116
Unique aggregates announced from the APNIC address blocks: 11835
APNIC Region origin ASes present in the Internet Routing Table: 1755
APNIC Region origin ASes announcing only one prefix: 515
APNIC Region transit ASes present in the Internet Routing Table: 287
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109010944
Equivalent to 6 /8s, 127 /16s and 96 /24s
Percentage of available APNIC address space announced: 64.6
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75766
Total ARIN prefixes after maximum aggregation: 47953
Prefixes being announced from the ARIN address blocks: 54018
Unique aggregates announced from the ARIN address blocks: 16800
ARIN Region origin ASes present in the Internet Routing Table: 8269
ARIN Region origin ASes announcing only one prefix: 2788
ARIN Region transit ASes present in the Internet Routing Table: 795
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 189077568
Equivalent to 11 /8s, 69 /16s and 24 /24s
Percentage of available ARIN address space announced: 70.4
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: 21359
Total RIPE prefixes after maximum aggregation: 15670
Prefixes being announced from the RIPE address blocks: 17881
Unique aggregates announced from the RIPE address blocks: 11887
RIPE Region origin ASes present in the Internet Routing Table: 4476
RIPE Region origin ASes announcing only one prefix: 2448
RIPE Region transit ASes present in the Internet Routing Table: 806
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128420608
Equivalent to 7 /8s, 167 /16s and 139 /24s
Percentage of available RIPE address space announced: 76.5
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: 5251
Total LACNIC prefixes after maximum aggregation: 2207
Prefixes being announced from the LACNIC address blocks: 4650
Unique aggregates announced from the LACNIC address blocks: 2953
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12406784
Equivalent to 0 /8s, 189 /16s and 80 /24s
Percentage of available LACNIC address space announced: 74.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1103 1106 807 Telstra Pty Ltd
703 401 369 314 UUNET
2907 380 1975 359 SINET Japan
17557 376 28 139 Pakistan Telecom
2764 323 340 291 connect.com.au pty ltd
4134 315 2826 105 Data Communications Bureau
7474 307 276 208 Optus Communications Pty Ltd
4814 267 79 15 China Telecom (Group)
3786 253 776 214 DACOM Corporation
17676 237 3654 25 XTAGE CORPORATION
4755 227 135 72 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2074 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 226 48 CHINA UNICOM
9238 135 8 17 TATA ISP
4716 129 733 123 TTnet
7539 129 167 123 TANet2, sponsored by NSC, TAI
4739 127 57 116 Commerical Internet eXchange
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1573 8901 1112 UUNET Technologies, Inc.
7018 1355 7159 941 AT&T
3908 1069 1587 478 Supernet, Inc.
1239 974 3123 688 Sprint
1 674 8043 427 GENUITY
7132 674 5939 475 Southwestern Bell Internet Se
7843 632 404 163 Adelphia Corp.
4151 604 691 58 USDA
3561 587 2351 338 Cable & Wireless USA
4323 565 491 177 Time Warner Communications, I
852 553 1107 436 Telus Advanced Communications
18566 544 123 13 Covad Communications
705 533 208 267 UUNET Technologies, Inc.
209 532 2105 338 Qwest
690 502 73 318 Merit Network
2386 500 481 247 AT&T Data Communications Serv
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 451 222 175 BellSouth Network Solutions,
20115 426 173 279 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 785 2220 652 UUNET - Commercial IP service
3301 310 1174 300 TeliaNet Sweden
3215 309 835 174 France Telecom Transpac
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
5400 223 77 106 BT Ignite European Backbone
1257 216 328 190 SWIPnet Swedish IP Network
719 202 307 125 LANLINK autonomous system
5515 187 779 161 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 155 17 3 This AS will be used to conne
8708 154 42 150 Romania Data Systems S.A.
3303 145 517 144 Swisscom Ltd
8220 136 215 128 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3246 110 384 107 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 290 98 107 ImpSat
7303 242 36 60 Telecom Argentina Stet-France
8151 217 349 116 UniNet S.A. de C.V.
11172 165 66 33 Servicios Alestra S.A de C.V
6503 155 191 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 89 8 37 Integrated Systems
6147 76 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
11830 65 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 40 Global One Colombia
13999 60 36 8 Mega Cable S.A. de C.V.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1069 591 Supernet, Inc.
4151 604 546 USDA
18566 544 531 Covad Communications
7843 632 469 Adelphia Corp.
7018 1355 414 AT&T
4323 565 388 Time Warner Communications, I
1221 1103 296 Telstra Pty Ltd
6347 371 289 SAVVIS Communications Corpora
1239 974 286 Sprint
6197 476 280 BellSouth Network Solutions,
4355 387 278 EarthLink, Inc.
6198 451 276 BellSouth Network Solutions,
22927 286 272 TELEFONICA DE ARGENTINA
705 533 266 UUNET Technologies, Inc.
2386 500 253 AT&T Data Communications Serv
4814 267 252 China Telecom (Group)
3561 587 249 Cable & Wireless USA
1 674 247 GENUITY
27364 265 247 Armstrong Cable Services
17557 376 237 Pakistan Telecom
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
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
192.43.230.0/24 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
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24 27321 INTERNET SOFTWARE CONSORTIUM,
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 /9:3 /10:8 /11:13 /12:47
/13:92 /14:243 /15:454 /16:7364 /17:1641 /18:2947
/19:8271 /20:8214 /21:5894 /22:8847 /23:10637 /24:67461
/25:196 /26:199 /27:129 /28:124 /29:79 /30:89
/31:4 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 667 1069 Supernet, Inc.
18566 539 544 Covad Communications
702 489 785 UUNET - Commercial IP service
7018 466 1355 AT&T
701 460 1573 UUNET Technologies, Inc.
690 451 502 Merit Network
7066 384 485 Virginia Polytechnic Institut
7843 381 632 Adelphia Corp.
1239 374 974 Sprint
6198 358 451 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
2386 301 500 AT&T Data Communications Serv
20115 299 426 Charter Communications
11305 295 318 Interland Incorporated
22927 285 286 TELEFONICA DE ARGENTINA
705 280 533 UUNET Technologies, Inc.
6140 277 290 ImpSat
27364 258 265 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
3215 233 309 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:668 13:1 15:4 17:2 20:10
24:781 25:1 32:85 38:66 40:18 44:2
55:1 57:17 61:459 62:518 63:1948 64:1499
65:1901 66:1618 67:203 68:314 69:73 80:325
81:112 128:150 129:176 130:45 131:83 132:11
133:11 134:146 135:4 136:113 137:111 138:106
139:66 140:152 141:86 142:97 143:47 144:96
145:16 146:266 147:90 148:275 149:74 150:43
151:66 152:247 153:52 154:2 155:112 156:46
157:44 158:124 159:140 160:33 161:62 162:130
163:80 164:308 165:140 166:75 167:322 168:399
169:55 170:316 171:6 192:5302 193:2392 194:1992
195:978 196:476 198:3569 199:3303 200:2882 202:3646
203:5015 204:3061 205:1984 206:2387 207:2397 208:2668
209:2888 210:738 211:331 212:985 213:773 214:20
215:21 216:3249 217:606 218:82 219:11 220:54
End of report
