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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 28 Aug, 2003
Analysis Summary
----------------
BGP routing table entries examined: 127771
Prefixes after maximum aggregation: 79899
Unique aggregates announced to Internet: 61247
Total ASes present in the Internet Routing Table: 15720
Origin-only ASes present in the Internet Routing Table: 13623
Origin ASes announcing only one prefix: 6207
Transit ASes present in the Internet Routing Table: 2097
Transit-only ASes present in the Internet Routing Table: 68
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: 1240179488
Equivalent to 73 /8s, 235 /16s and 163 /24s
Percentage of available address space announced: 33.5
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56805
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 22315
Total APNIC prefixes after maximum aggregation: 12636
Prefixes being announced from the APNIC address blocks: 20727
Unique aggregates announced from the APNIC address blocks: 12326
APNIC Region origin ASes present in the Internet Routing Table: 1884
APNIC Region origin ASes announcing only one prefix: 545
APNIC Region transit ASes present in the Internet Routing Table: 312
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 120871424
Equivalent to 7 /8s, 52 /16s and 90 /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: 77771
Total ARIN prefixes after maximum aggregation: 48574
Prefixes being announced from the ARIN address blocks: 55481
Unique aggregates announced from the ARIN address blocks: 17240
ARIN Region origin ASes present in the Internet Routing Table: 8607
ARIN Region origin ASes announcing only one prefix: 2948
ARIN Region transit ASes present in the Internet Routing Table: 834
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 196129568
Equivalent to 11 /8s, 176 /16s and 179 /24s
Percentage of available ARIN address space announced: 73.1
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: 22332
Total RIPE prefixes after maximum aggregation: 16394
Prefixes being announced from the RIPE address blocks: 18934
Unique aggregates announced from the RIPE address blocks: 12721
RIPE Region origin ASes present in the Internet Routing Table: 4814
RIPE Region origin ASes announcing only one prefix: 2616
RIPE Region transit ASes present in the Internet Routing Table: 851
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 135092032
Equivalent to 8 /8s, 13 /16s and 87 /24s
Percentage of available RIPE address space announced: 73.2
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: 5351
Total LACNIC prefixes after maximum aggregation: 2295
Prefixes being announced from the LACNIC address blocks: 4791
Unique aggregates announced from the LACNIC address blocks: 3128
LACNIC Region origin ASes present in the Internet Routing Table: 347
LACNIC Region origin ASes announcing only one prefix: 98
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 13045760
Equivalent to 0 /8s, 199 /16s and 16 /24s
Percentage of available LACNIC address space announced: 38.9
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 1047 1125 696 Telstra Pty Ltd
4755 404 135 73 Videsh Sanchar Nigam Ltd. Aut
2907 375 1912 350 SINET Japan
703 342 374 270 UUNET
4134 333 2220 112 Data Communications Bureau
17557 304 26 136 Pakistan Telecom
2764 300 323 268 connect.com.au pty ltd
7474 261 306 204 Optus Communications Pty Ltd
17676 253 3894 22 XTAGE CORPORATION
9583 242 37 21 Satyam Infoway Ltd.,
4766 239 2461 171 Korea Internet Exchange for "
3786 237 773 203 DACOM Corporation
9800 198 326 56 CHINA UNICOM
9443 182 58 82 Primus Telecommunications
9498 175 15 36 BHARTI BT INTERNET LTD.
4538 170 1538 21 China Education and Research
9929 170 155 34 China Netcom Corp.
17642 158 41 119 RequestDSL BGP AS# for Sydney
9942 156 69 101 COMindico Australia
9238 140 9 21 TATA ISP
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1486 8785 1044 UUNET Technologies, Inc.
7018 1383 7140 974 AT&T
3908 922 1589 494 Supernet, Inc.
1239 896 3031 645 Sprint
189 673 451 333 Genuity
18566 667 160 8 Covad Communications
4323 624 551 179 Time Warner Communications, I
6197 571 387 247 BellSouth Network Solutions,
7843 547 417 184 Adelphia Corp.
852 523 1124 415 Telus Advanced Communications
209 519 2145 298 Qwest
6198 514 277 197 BellSouth Network Solutions,
7066 490 205 262 Virginia Polytechnic Institut
705 482 192 301 UUNET Technologies, Inc.
3356 481 10676 400 Level 3 Communications, LLC
20115 477 198 287 Charter Communications
1 466 1056 301 GENUITY
7132 411 6609 240 Southwestern Bell Internet Se
4355 403 340 111 EarthLink, Inc.
690 390 56 274 Merit Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 730 2125 605 UUNET - Commercial IP service
3301 288 1168 276 TeliaNet Sweden
3320 267 1988 227 Deutsche Telekom AG
1257 248 375 190 SWIPnet Swedish IP Network
8220 244 431 233 COLT Internet - International
680 232 2054 229 DFN-IP service G-WiN
3215 213 736 120 France Telecom Transpac
719 196 307 125 LANLINK autonomous system
5515 185 779 148 Sonera Solution Autonomous Sy
5400 180 175 131 BT Ignite European Backbone
786 179 1874 179 The JANET IP Service
8708 159 111 155 Romania Data Systems S.A.
3303 143 540 140 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
3246 121 360 119 Song Networks
3269 117 821 64 TELECOM ITALIA
2856 112 1295 103 BTnet UK Regional network
3352 110 812 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 319 103 114 ImpSat
7303 236 39 55 Telecom Argentina Stet-France
8151 222 334 117 UniNet S.A. de C.V.
11172 178 77 43 Servicios Alestra S.A de C.V
16814 151 10 17 NSS, S.A.
6503 133 205 94 AVANTEL, S.A.
10620 127 8 28 TVCABLE BOGOTA
11340 107 3 38 Red Universitaria Nacional
11992 88 8 38 Integrated Systems
6147 83 70 20 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 73 306 43 Fundacao de Amparo a Pesquisa
4270 68 18 9 Red de Interconexion Universi
7927 67 6 40 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.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 667 659 Covad Communications
4323 624 445 Time Warner Communications, I
3908 922 428 Supernet, Inc.
7018 1383 409 AT&T
7843 547 363 Adelphia Corp.
1221 1047 351 Telstra Pty Ltd
189 673 340 Genuity
4755 404 331 Videsh Sanchar Nigam Ltd. Aut
6197 571 324 BellSouth Network Solutions,
11305 358 320 Interland Incorporated
6198 514 317 BellSouth Network Solutions,
27364 317 294 Armstrong Cable Services
4355 403 292 EarthLink, Inc.
6347 359 280 SAVVIS Communications Corpora
22909 291 273 Comcast Cable Corporation
25844 257 255 Skadden, Arps, Slate, Meagher
1239 896 251 Sprint
376 359 244 Reseau Interordinateurs Scien
17676 253 231 XTAGE CORPORATION
7066 490 228 Virginia Polytechnic Institut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18413 UNALLOCATED 61.67.0.0/20 4747 Taiwan Telecommunica
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
65100 PRIVATE 210.104.28.0/25 9768 Korea Telecom
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 /14:263 /15:474 /16:7416 /17:1734 /18:3080
/19:8428 /20:8702 /21:6355 /22:9424 /23:10888 /24:70161
/25:170 /26:217 /27:151 /28:26 /29:13 /30:48
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 661 667 Covad Communications
189 588 673 Genuity
3908 582 922 Supernet, Inc.
7018 490 1383 AT&T
701 444 1486 UUNET Technologies, Inc.
702 444 730 UUNET - Commercial IP service
6197 436 571 BellSouth Network Solutions,
6198 406 514 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
690 350 390 Merit Network
20115 325 477 Charter Communications
27364 311 317 Armstrong Cable Services
1239 307 896 Sprint
10753 298 312 XCOM Technologies, INC.
11305 281 358 Interland Incorporated
7843 265 547 Adelphia Corp.
25844 257 257 Skadden, Arps, Slate, Meagher
4355 217 403 EarthLink, Inc.
209 211 519 Qwest
3356 209 481 Level 3 Communications, LLC
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:700 13:1 15:4 16:1 17:4
20:6 24:843 25:1 32:85 38:45 40:23
44:2 55:1 57:14 61:285 62:393 63:1852
64:1763 65:1996 66:2684 67:254 68:391 69:254
80:407 81:124 82:14 128:130 129:170 130:62
131:81 132:13 134:164 135:7 136:188 137:119
138:120 139:47 140:145 141:118 142:100 143:45
144:90 145:13 146:276 147:61 148:301 149:74
150:122 151:68 152:213 153:57 154:4 155:125
156:68 157:48 158:119 159:135 160:45 161:75
162:376 163:79 164:330 165:146 166:96 167:313
168:182 169:95 170:323 171:9 192:5400 193:2469
194:1980 195:1176 196:470 198:3609 199:2752 200:2951
202:3945 203:5253 204:2994 205:2038 206:2342 207:2488
208:2565 209:2863 210:901 211:301 212:968 213:925
214:16 215:22 216:3263 217:686 218:97 219:74
220:102 221:10
End of report
