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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 17 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124068
Prefixes after maximum aggregation: 78043
Unique aggregates announced to Internet: 58795
Total ASes present in the Internet Routing Table: 15018
Origin-only ASes present in the Internet Routing Table: 13017
Origin ASes announcing only one prefix: 5910
Transit ASes present in the Internet Routing Table: 2001
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1223000320
Equivalent to 72 /8s, 229 /16s and 129 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 53790
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20720
Total APNIC prefixes after maximum aggregation: 12174
Prefixes being announced from the APNIC address blocks: 19179
Unique aggregates announced from the APNIC address blocks: 11829
APNIC Region origin ASes present in the Internet Routing Table: 1767
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: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 109896160
Equivalent to 6 /8s, 140 /16s and 225 /24s
Percentage of available APNIC address space announced: 59.2
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: 76786
Total ARIN prefixes after maximum aggregation: 47939
Prefixes being announced from the ARIN address blocks: 54991
Unique aggregates announced from the ARIN address blocks: 16360
ARIN Region origin ASes present in the Internet Routing Table: 8330
ARIN Region origin ASes announcing only one prefix: 2848
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: 190551808
Equivalent to 11 /8s, 91 /16s and 151 /24s
Percentage of available ARIN address space announced: 71.0
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: 21382
Total RIPE prefixes after maximum aggregation: 15745
Prefixes being announced from the RIPE address blocks: 17928
Unique aggregates announced from the RIPE address blocks: 12010
RIPE Region origin ASes present in the Internet Routing Table: 4516
RIPE Region origin ASes announcing only one prefix: 2459
RIPE Region transit ASes present in the Internet Routing Table: 813
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129040896
Equivalent to 7 /8s, 177 /16s and 2 /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: 5178
Total LACNIC prefixes after maximum aggregation: 2185
Prefixes being announced from the LACNIC address blocks: 4649
Unique aggregates announced from the LACNIC address blocks: 2970
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: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12444416
Equivalent to 0 /8s, 189 /16s and 227 /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 1102 1104 793 Telstra Pty Ltd
703 396 381 310 UUNET
17557 373 27 139 Pakistan Telecom
2907 338 1758 325 SINET Japan
2764 323 341 291 connect.com.au pty ltd
4814 273 79 15 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 241 3718 22 XTAGE CORPORATION
4755 231 136 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 1586 8957 1113 UUNET Technologies, Inc.
7018 1364 7175 945 AT&T
1239 967 3121 683 Sprint
3908 935 1571 476 Supernet, Inc.
7132 866 6362 192 Southwestern Bell Internet Se
4151 760 691 60 USDA
1 754 2770 481 GENUITY
189 705 341 290 Genuity
7843 679 401 177 Adelphia Corp.
4323 571 514 166 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
705 534 287 238 UUNET Technologies, Inc.
2386 511 482 268 AT&T Data Communications Serv
3561 511 2341 335 Cable & Wireless USA
209 498 2138 302 Qwest
690 494 72 312 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 478 339 195 BellSouth Network Solutions,
6198 456 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 778 2202 645 UUNET - Commercial IP service
3215 311 851 174 France Telecom Transpac
3301 307 1173 297 TeliaNet Sweden
3320 263 2004 224 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
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
8220 170 298 160 COLT Internet - International
20858 163 17 3 This AS will be used to conne
8708 156 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
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 294 99 105 ImpSat
7303 243 36 62 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 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
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 68 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
15034 61 5 33 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 760 700 USDA
7132 866 674 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 679 502 Adelphia Corp.
3908 935 459 Supernet, Inc.
7018 1364 419 AT&T
189 705 415 Genuity
4323 571 405 Time Warner Communications, I
1221 1102 309 Telstra Pty Ltd
705 534 296 UUNET Technologies, Inc.
6347 365 286 SAVVIS Communications Corpora
1239 967 284 Sprint
6197 478 283 BellSouth Network Solutions,
22927 296 282 TELEFONICA DE ARGENTINA
6198 456 281 BellSouth Network Solutions,
1 754 273 GENUITY
4355 373 272 EarthLink, Inc.
4814 273 258 China Telecom (Group)
27364 269 251 Armstrong Cable Services
2386 511 243 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 /14:251 /15:464 /16:7369 /17:1642 /18:2956
/19:8332 /20:8255 /21:5933 /22:8860 /23:10567 /24:68850
/25:127 /26:157 /27:31 /28:25 /29:12 /30:24
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 592 935 Supernet, Inc.
18566 535 541 Covad Communications
702 484 778 UUNET - Commercial IP service
7018 475 1364 AT&T
690 443 494 Merit Network
701 439 1586 UUNET Technologies, Inc.
7843 425 679 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 364 967 Sprint
6198 359 456 BellSouth Network Solutions,
6197 357 478 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 308 511 AT&T Data Communications Serv
20115 295 424 Charter Communications
1 266 754 GENUITY
4814 263 273 China Telecom (Group)
27364 262 269 Armstrong Cable Services
22927 235 296 TELEFONICA DE ARGENTINA
3215 234 311 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:676 13:1 15:4 17:3 20:9 24:815
25:1 32:86 38:64 40:18 44:2 55:1
57:16 61:411 62:524 63:1887 64:1557 65:1930
66:2373 67:164 68:356 69:104 80:332 81:120
128:149 129:177 130:45 131:82 132:10 133:2
134:154 135:4 136:112 137:111 138:108 139:66
140:148 141:91 142:95 143:45 144:114 145:16
146:264 147:93 148:275 149:71 150:46 151:68
152:246 153:57 154:2 155:106 156:45 157:40
158:123 159:142 160:37 161:75 162:139 163:79
164:312 165:140 166:75 167:329 168:406 169:57
170:316 171:7 192:5349 193:2423 194:1992 195:990
196:462 198:3560 199:3452 200:2922 202:3703 203:5071
204:3076 205:2002 206:2412 207:2413 208:2650 209:2828
210:749 211:340 212:995 213:784 214:21 215:21
216:3319 217:630 218:84 219:12 220:57
End of report
