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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 05 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123573
Prefixes after maximum aggregation: 78292
Unique aggregates announced to Internet: 59100
Total ASes present in the Internet Routing Table: 14935
Origin-only ASes present in the Internet Routing Table: 12955
Origin ASes announcing only one prefix: 5854
Transit ASes present in the Internet Routing Table: 1980
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 22
Number of addresses announced to Internet: 1222853600
Equivalent to 72 /8s, 227 /16s and 67 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 58286
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20555
Total APNIC prefixes after maximum aggregation: 12243
Prefixes being announced from the APNIC address blocks: 19019
Unique aggregates announced from the APNIC address blocks: 11821
APNIC Region origin ASes present in the Internet Routing Table: 1759
APNIC Region origin ASes announcing only one prefix: 517
APNIC Region transit ASes present in the Internet Routing Table: 282
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109195776
Equivalent to 6 /8s, 130 /16s and 50 /24s
Percentage of available APNIC address space announced: 64.7
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: 76396
Total ARIN prefixes after maximum aggregation: 48139
Prefixes being announced from the ARIN address blocks: 54617
Unique aggregates announced from the ARIN address blocks: 16695
ARIN Region origin ASes present in the Internet Routing Table: 8292
ARIN Region origin ASes announcing only one prefix: 2808
ARIN Region transit ASes present in the Internet Routing Table: 796
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190064064
Equivalent to 11 /8s, 84 /16s and 37 /24s
Percentage of available ARIN address space announced: 70.8
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: 21343
Total RIPE prefixes after maximum aggregation: 15698
Prefixes being announced from the RIPE address blocks: 17850
Unique aggregates announced from the RIPE address blocks: 11953
RIPE Region origin ASes present in the Internet Routing Table: 4481
RIPE Region origin ASes announcing only one prefix: 2445
RIPE Region transit ASes present in the Internet Routing Table: 804
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128662272
Equivalent to 7 /8s, 171 /16s and 59 /24s
Percentage of available RIPE address space announced: 76.7
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: 5275
Total LACNIC prefixes after maximum aggregation: 2212
Prefixes being announced from the LACNIC address blocks: 4665
Unique aggregates announced from the LACNIC address blocks: 2954
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12419584
Equivalent to 0 /8s, 189 /16s and 130 /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 1100 1105 803 Telstra Pty Ltd
703 395 366 313 UUNET
2907 380 1975 359 SINET Japan
17557 376 28 143 Pakistan Telecom
2764 318 340 286 connect.com.au pty ltd
7474 271 276 207 Optus Communications Pty Ltd
4814 269 79 15 China Telecom (Group)
3786 245 775 212 DACOM Corporation
4134 243 2115 128 Data Communications Bureau
17676 237 3654 25 XTAGE CORPORATION
4755 224 135 74 Videsh Sanchar Nigam Ltd. Aut
9583 219 33 14 Satyam Infoway Ltd.,
4766 211 2078 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 174 226 48 CHINA UNICOM
9238 136 8 17 TATA ISP
4739 128 57 117 Commerical Internet eXchange
4716 127 715 121 TTnet
9498 127 9 10 BHARTI BT INTERNET LTD.
9768 125 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1583 8889 1119 UUNET Technologies, Inc.
7018 1351 7153 935 AT&T
3908 985 1572 474 Supernet, Inc.
1239 973 3139 688 Sprint
1 776 2846 493 GENUITY
7132 727 6084 408 Southwestern Bell Internet Se
189 706 341 291 Genuity
7843 627 401 161 Adelphia Corp.
4151 619 691 58 USDA
3561 588 2353 339 Cable & Wireless USA
4323 563 498 164 Time Warner Communications, I
852 550 1107 433 Telus Advanced Communications
18566 534 124 7 Covad Communications
209 529 2089 337 Qwest
690 502 73 318 Merit Network
2386 500 481 271 AT&T Data Communications Serv
7066 485 204 255 Virginia Polytechnic Institut
6197 475 338 196 BellSouth Network Solutions,
6198 458 226 178 BellSouth Network Solutions,
705 457 188 201 UUNET Technologies, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 780 2221 647 UUNET - Commercial IP service
3215 316 851 175 France Telecom Transpac
3301 310 1174 300 TeliaNet Sweden
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 328 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5400 195 93 109 BT Ignite European Backbone
5515 195 779 168 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 144 517 143 Swisscom Ltd
8220 137 215 128 COLT Internet - International
12302 124 18 31 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 113 755 63 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 295 99 106 ImpSat
7303 242 36 61 Telecom Argentina Stet-France
8151 215 333 117 UniNet S.A. de C.V.
11172 164 66 33 Servicios Alestra S.A de C.V
6503 154 207 109 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 90 9 36 Integrated Systems
6147 78 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 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
13999 68 36 8 Mega Cable S.A. de C.V.
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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 619 561 USDA
18566 534 527 Covad Communications
3908 985 511 Supernet, Inc.
7843 627 466 Adelphia Corp.
7018 1351 416 AT&T
189 706 415 Genuity
4323 563 399 Time Warner Communications, I
7132 727 319 Southwestern Bell Internet Se
1221 1100 297 Telstra Pty Ltd
6347 370 288 SAVVIS Communications Corpora
1239 973 285 Sprint
1 776 283 GENUITY
22927 295 281 TELEFONICA DE ARGENTINA
6198 458 280 BellSouth Network Solutions,
6197 475 279 BellSouth Network Solutions,
4355 380 278 EarthLink, Inc.
705 457 256 UUNET Technologies, Inc.
4814 269 254 China Telecom (Group)
3561 588 249 Cable & Wireless USA
27364 266 248 Armstrong Cable Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64500 RESERVED 192.83.252.0/24 297 NASA Science Network
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
65500 PRIVATE 192.198.4.0/22 5078 Oklahoma Network for
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
192.75.199.0/24 25745 Alentus Corporation
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 /9:5 /10:8 /11:13 /12:47
/13:92 /14:249 /15:462 /16:7380 /17:1645 /18:2956
/19:8264 /20:8195 /21:5902 /22:8819 /23:10605 /24:68334
/25:175 /26:192 /27:52 /28:34 /29:20 /30:60
/31:0 /32:46
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 627 706 Genuity
3908 621 985 Supernet, Inc.
18566 529 534 Covad Communications
702 484 780 UUNET - Commercial IP service
701 468 1583 UUNET Technologies, Inc.
7018 468 1351 AT&T
690 451 502 Merit Network
7066 384 485 Virginia Polytechnic Institut
7843 377 627 Adelphia Corp.
1239 372 973 Sprint
6198 362 458 BellSouth Network Solutions,
6197 354 475 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 299 500 AT&T Data Communications Serv
20115 298 425 Charter Communications
22927 294 295 TELEFONICA DE ARGENTINA
6140 282 295 ImpSat
1 277 776 GENUITY
27364 259 266 Armstrong Cable Services
7303 241 242 Telecom Argentina Stet-France
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:670 13:1 15:4 17:2 20:10
24:790 25:1 32:86 38:65 40:18 44:2
55:1 57:17 61:402 62:504 63:1884 64:1517
65:1907 66:2341 67:176 68:322 69:80 80:332
81:123 128:150 129:177 130:45 131:83 132:11
133:11 134:147 135:4 136:113 137:111 138:104
139:66 140:149 141:88 142:94 143:47 144:109
145:16 146:268 147:90 148:275 149:73 150:43
151:66 152:248 153:53 154:2 155:109 156:46
157:44 158:124 159:141 160:34 161:60 162:129
163:79 164:309 165:135 166:75 167:325 168:408
169:56 170:315 171:6 192:5352 193:2399 194:1992
195:996 196:478 198:3562 199:3300 200:2897 202:3641
203:5033 204:3070 205:2015 206:2425 207:2397 208:2663
209:2876 210:738 211:335 212:1015 213:764 214:20
215:21 216:3283 217:616 218:83 219:11 220:57
End of report
