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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 24 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127297
Prefixes after maximum aggregation: 79847
Unique aggregates announced to Internet: 61223
Total ASes present in the Internet Routing Table: 15683
Origin-only ASes present in the Internet Routing Table: 13587
Origin ASes announcing only one prefix: 6187
Transit ASes present in the Internet Routing Table: 2096
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: 26
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: 15
Number of addresses announced to Internet: 1238953056
Equivalent to 73 /8s, 216 /16s and 236 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56739
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22273
Total APNIC prefixes after maximum aggregation: 12682
Prefixes being announced from the APNIC address blocks: 20696
Unique aggregates announced from the APNIC address blocks: 12376
APNIC Region origin ASes present in the Internet Routing Table: 1885
APNIC Region origin ASes announcing only one prefix: 546
APNIC Region transit ASes present in the Internet Routing Table: 314
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120814720
Equivalent to 7 /8s, 51 /16s and 124 /24s
Percentage of available APNIC address space announced: 65.1
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: 77507
Total ARIN prefixes after maximum aggregation: 48533
Prefixes being announced from the ARIN address blocks: 55326
Unique aggregates announced from the ARIN address blocks: 17202
ARIN Region origin ASes present in the Internet Routing Table: 8599
ARIN Region origin ASes announcing only one prefix: 2946
ARIN Region transit ASes present in the Internet Routing Table: 835
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 195979008
Equivalent to 11 /8s, 174 /16s and 103 /24s
Percentage of available ARIN address space announced: 73.0
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: 22231
Total RIPE prefixes after maximum aggregation: 16353
Prefixes being announced from the RIPE address blocks: 18849
Unique aggregates announced from the RIPE address blocks: 12704
RIPE Region origin ASes present in the Internet Routing Table: 4779
RIPE Region origin ASes announcing only one prefix: 2599
RIPE Region transit ASes present in the Internet Routing Table: 848
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 134449984
Equivalent to 8 /8s, 3 /16s and 139 /24s
Percentage of available RIPE address space announced: 72.9
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: 5284
Total LACNIC prefixes after maximum aggregation: 2279
Prefixes being announced from the LACNIC address blocks: 4739
Unique aggregates announced from the LACNIC address blocks: 3133
LACNIC Region origin ASes present in the Internet Routing Table: 346
LACNIC Region origin ASes announcing only one prefix: 96
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 13027840
Equivalent to 0 /8s, 198 /16s and 202 /24s
Percentage of available LACNIC address space announced: 38.8
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 1037 1037 727 Telstra Pty Ltd
4755 404 135 74 Videsh Sanchar Nigam Ltd. Aut
2907 372 1911 347 SINET Japan
703 341 372 273 UUNET
4134 331 2210 114 Data Communications Bureau
17557 308 26 138 Pakistan Telecom
2764 301 323 269 connect.com.au pty ltd
7474 264 307 204 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 242 37 21 Satyam Infoway Ltd.,
3786 239 777 205 DACOM Corporation
4766 239 2461 171 Korea Internet Exchange for "
9800 198 326 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 172 15 27 BHARTI BT INTERNET LTD.
4538 170 1538 21 China Education and Research
9929 169 153 33 China Netcom Corp.
17642 158 41 119 RequestDSL BGP AS# for Sydney
9942 154 69 105 COMindico Australia
9238 140 9 21 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1487 8786 1045 UUNET Technologies, Inc.
7018 1370 7170 971 AT&T
3908 921 1589 495 Supernet, Inc.
1239 897 3032 638 Sprint
189 672 451 331 Genuity
18566 665 160 8 Covad Communications
4323 624 551 179 Time Warner Communications, I
6197 569 387 244 BellSouth Network Solutions,
7843 551 410 197 Adelphia Corp.
852 521 1124 414 Telus Advanced Communications
209 519 2145 298 Qwest
6198 512 277 197 BellSouth Network Solutions,
7066 490 205 262 Virginia Polytechnic Institut
705 482 192 301 UUNET Technologies, Inc.
3356 478 10661 399 Level 3 Communications, LLC
1 475 1077 307 GENUITY
20115 475 197 286 Charter Communications
7132 410 6608 240 Southwestern Bell Internet Se
690 407 59 274 Merit Network
4355 404 339 109 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 736 2141 611 UUNET - Commercial IP service
3301 289 1168 277 TeliaNet Sweden
3320 264 1987 224 Deutsche Telekom AG
8220 243 431 232 COLT Internet - International
1257 242 312 191 SWIPnet Swedish IP Network
680 232 2054 229 DFN-IP service G-WiN
3215 214 752 121 France Telecom Transpac
719 195 307 124 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
5400 175 175 127 BT Ignite European Backbone
8708 159 111 155 Romania Data Systems S.A.
3303 140 540 137 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
3246 121 360 119 Song Networks
3269 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 111 812 33 Ibernet, Internet Access Netw
2647 101 4129 45 SITA
6746 88 12 75 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 316 103 114 ImpSat
7303 236 39 55 Telecom Argentina Stet-France
8151 222 350 117 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 152 10 18 NSS, S.A.
6503 131 189 93 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11992 87 8 39 Integrated Systems
6147 84 70 21 Telefonica Del Peru
8065 80 8 17 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 75 14 38 Telefonica Empresas
11830 74 6 29 Instituto Costarricense de El
1916 70 286 42 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 65 6 39 Global One Venezuela
7080 64 4 1 Electronica y Comunicaciones
7984 59 12 40 Global One Colombia
13999 56 36 8 Mega Cable S.A. de C.V.
11340 55 2 28 Red Universitaria Nacional
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 665 657 Covad Communications
4323 624 445 Time Warner Communications, I
3908 921 426 Supernet, Inc.
7018 1370 399 AT&T
7843 551 354 Adelphia Corp.
189 672 341 Genuity
4755 404 330 Videsh Sanchar Nigam Ltd. Aut
6197 569 325 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 512 315 BellSouth Network Solutions,
1221 1037 310 Telstra Pty Ltd
4355 404 295 EarthLink, Inc.
27364 317 294 Armstrong Cable Services
6347 359 280 SAVVIS Communications Corpora
22909 286 269 Comcast Cable Corporation
1239 897 259 Sprint
25844 257 255 Skadden, Arps, Slate, Meagher
17676 253 231 XTAGE CORPORATION
7066 490 228 Virginia Polytechnic Institut
22773 244 224 Cox Communications, Inc. Atla
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
64512 PRIVATE 61.95.250.0/24 9498 BHARTI BT INTERNET L
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 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
192.153.136.0/21 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.228.80.0/24 30122 INTERNET SOFTWARE CONSORTIUM,
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:4 /10:6 /11:12 /12:55
/13:98 /14:262 /15:473 /16:7406 /17:1733 /18:3071
/19:8406 /20:8690 /21:6343 /22:9402 /23:10871 /24:69852
/25:163 /26:187 /27:133 /28:24 /29:12 /30:48
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 659 665 Covad Communications
189 587 672 Genuity
3908 581 921 Supernet, Inc.
7018 477 1370 AT&T
702 449 736 UUNET - Commercial IP service
701 444 1487 UUNET Technologies, Inc.
6197 434 569 BellSouth Network Solutions,
6198 404 512 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
690 368 407 Merit Network
20115 323 475 Charter Communications
27364 311 317 Armstrong Cable Services
1239 301 897 Sprint
10753 298 312 XCOM Technologies, INC.
11305 281 358 Interland Incorporated
7843 275 551 Adelphia Corp.
25844 257 257 Skadden, Arps, Slate, Meagher
4355 217 404 EarthLink, Inc.
209 210 519 Qwest
705 207 482 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:701 13:1 15:4 16:1 17:3
20:6 24:847 25:1 32:85 38:45 40:23
44:2 55:1 57:14 61:284 62:388 63:1850
64:1762 65:2006 66:2687 67:247 68:393 69:250
80:402 81:126 82:10 128:160 129:171 130:62
131:82 132:13 134:167 135:7 136:188 137:118
138:121 139:45 140:141 141:116 142:100 143:45
144:88 145:13 146:275 147:61 148:301 149:73
150:120 151:68 152:218 153:57 154:4 155:125
156:59 157:48 158:119 159:135 160:45 161:75
162:408 163:76 164:314 165:141 166:96 167:313
168:183 169:95 170:322 171:9 192:5340 193:2468
194:1973 195:1174 196:467 198:3515 199:2748 200:2944
202:3933 203:5253 204:2951 205:2033 206:2260 207:2492
208:2544 209:2866 210:895 211:299 212:978 213:916
214:16 215:22 216:3275 217:689 218:98 219:73
220:102 221:10
End of report
