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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 29 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124947
Prefixes after maximum aggregation: 78288
Unique aggregates announced to Internet: 59111
Total ASes present in the Internet Routing Table: 15101
Origin-only ASes present in the Internet Routing Table: 13097
Origin ASes announcing only one prefix: 5946
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1225716544
Equivalent to 73 /8s, 14 /16s and 243 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54246
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21034
Total APNIC prefixes after maximum aggregation: 12290
Prefixes being announced from the APNIC address blocks: 19484
Unique aggregates announced from the APNIC address blocks: 11951
APNIC Region origin ASes present in the Internet Routing Table: 1785
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 299
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 110718944
Equivalent to 6 /8s, 153 /16s and 111 /24s
Percentage of available APNIC address space announced: 59.7
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: 77183
Total ARIN prefixes after maximum aggregation: 48025
Prefixes being announced from the ARIN address blocks: 55247
Unique aggregates announced from the ARIN address blocks: 16548
ARIN Region origin ASes present in the Internet Routing Table: 8367
ARIN Region origin ASes announcing only one prefix: 2865
ARIN Region transit ASes present in the Internet Routing Table: 795
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191375424
Equivalent to 11 /8s, 104 /16s and 40 /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: 21508
Total RIPE prefixes after maximum aggregation: 15774
Prefixes being announced from the RIPE address blocks: 18066
Unique aggregates announced from the RIPE address blocks: 12068
RIPE Region origin ASes present in the Internet Routing Table: 4545
RIPE Region origin ASes announcing only one prefix: 2473
RIPE Region transit ASes present in the Internet Routing Table: 810
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129386112
Equivalent to 7 /8s, 182 /16s and 70 /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: 5219
Total LACNIC prefixes after maximum aggregation: 2199
Prefixes being announced from the LACNIC address blocks: 4701
Unique aggregates announced from the LACNIC address blocks: 2935
LACNIC Region origin ASes present in the Internet Routing Table: 331
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12482816
Equivalent to 0 /8s, 190 /16s and 121 /24s
Percentage of available LACNIC address space announced: 37.2
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 1099 1104 788 Telstra Pty Ltd
4755 413 136 75 Videsh Sanchar Nigam Ltd. Aut
703 398 383 312 UUNET
2907 385 1976 362 SINET Japan
17557 374 28 140 Pakistan Telecom
2764 321 341 289 connect.com.au pty ltd
4814 297 85 23 China Telecom (Group)
7474 270 275 206 Optus Communications Pty Ltd
17676 245 3782 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 224 2014 114 Data Communications Bureau
9583 223 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 1565 8922 1103 UUNET Technologies, Inc.
7018 1336 7142 925 AT&T
1239 961 3112 679 Sprint
7132 960 6476 209 Southwestern Bell Internet Se
4151 950 691 60 USDA
3908 917 1570 470 Supernet, Inc.
7843 742 408 195 Adelphia Corp.
1 731 2733 463 GENUITY
189 706 341 289 Genuity
4323 576 514 169 Time Warner Communications, I
705 547 279 237 UUNET Technologies, Inc.
852 546 1110 429 Telus Advanced Communications
18566 546 144 5 Covad Communications
2386 530 484 265 AT&T Data Communications Serv
3561 510 2341 332 Cable & Wireless USA
209 492 2120 293 Qwest
690 490 72 317 Merit Network
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
702 771 2186 641 UUNET - Commercial IP service
3301 308 1173 298 TeliaNet Sweden
3215 304 867 175 France Telecom Transpac
3320 266 2004 226 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 228 328 190 SWIPnet Swedish IP Network
5400 206 112 114 BT Ignite European Backbone
8220 198 364 187 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 188 779 161 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 165 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 121 1298 111 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 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
6147 91 62 20 Telefonica Del Peru
11992 89 8 37 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
8065 72 7 16 Empresas Publicas de Medellin
15311 72 28 36 Telefonica Empresas
4270 67 18 9 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 61 11 41 Global One Colombia
15034 60 5 32 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 950 890 USDA
7132 960 751 Southwestern Bell Internet Se
7843 742 547 Adelphia Corp.
18566 546 541 Covad Communications
3908 917 447 Supernet, Inc.
189 706 417 Genuity
7018 1336 411 AT&T
4323 576 407 Time Warner Communications, I
4755 413 338 Videsh Sanchar Nigam Ltd. Aut
1221 1099 311 Telstra Pty Ltd
705 547 310 UUNET Technologies, Inc.
6347 367 287 SAVVIS Communications Corpora
6198 459 284 BellSouth Network Solutions,
6197 479 283 BellSouth Network Solutions,
1239 961 282 Sprint
4355 383 278 EarthLink, Inc.
22927 288 275 TELEFONICA DE ARGENTINA
4814 297 274 China Telecom (Group)
1 731 268 GENUITY
2386 530 265 AT&T Data Communications Serv
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65021 PRIVATE 128.216.1.0/24 619 Department of Navy
65021 PRIVATE 128.216.4.0/24 619 Department of Navy
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
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
/13:92 /14:252 /15:465 /16:7391 /17:1672 /18:2968
/19:8377 /20:8365 /21:5993 /22:8952 /23:10526 /24:69412
/25:125 /26:144 /27:31 /28:24 /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
7843 486 742 Adelphia Corp.
702 479 771 UUNET - Commercial IP service
7018 465 1336 AT&T
690 439 490 Merit Network
701 430 1565 UUNET Technologies, Inc.
7066 382 483 Virginia Polytechnic Institut
6198 362 459 BellSouth Network Solutions,
1239 359 961 Sprint
6197 357 479 BellSouth Network Solutions,
20115 341 475 Charter Communications
2386 323 530 AT&T Data Communications Serv
11305 311 334 Interland Incorporated
4814 284 297 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 731 GENUITY
705 239 547 UUNET Technologies, Inc.
3215 226 304 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:694 13:1 15:4 17:3 20:8 24:828
25:1 32:46 38:121 40:18 44:2 55:1
57:16 61:439 62:538 63:1896 64:1558 65:1925
66:2398 67:169 68:382 69:115 80:354 81:144
128:155 129:178 130:44 131:82 132:11 133:2
134:155 135:4 136:113 137:108 138:109 139:67
140:151 141:106 142:95 143:43 144:102 145:15
146:261 147:94 148:277 149:72 150:43 151:68
152:245 153:57 154:2 155:110 156:46 157:40
158:124 159:144 160:37 161:74 162:146 163:77
164:307 165:133 166:87 167:331 168:398 169:57
170:319 171:7 192:5344 193:2413 194:1992 195:1007
196:464 198:3566 199:3631 200:2950 202:3706 203:5129
204:3043 205:2017 206:2415 207:2401 208:2638 209:2841
210:776 211:313 212:967 213:811 214:20 215:21
216:3359 217:629 218:90 219:20 220:92
End of report
