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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 20 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131659
Prefixes after maximum aggregation: 80992
Unique aggregates announced to Internet: 63497
Total ASes present in the Internet Routing Table: 16481
Origin-only ASes present in the Internet Routing Table: 14310
Origin ASes announcing only one prefix: 6590
Transit ASes present in the Internet Routing Table: 2171
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 30
Illegal AS announcements present in the Routing Table: 7
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1279777380
Equivalent to 76 /8s, 71 /16s and 218 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 58068
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24333
Total APNIC prefixes after maximum aggregation: 13047
Prefixes being announced from the APNIC address blocks: 22807
Unique aggregates announced from the APNIC address blocks: 12904
APNIC Region origin ASes present in the Internet Routing Table: 1972
APNIC Region origin ASes announcing only one prefix: 587
APNIC Region transit ASes present in the Internet Routing Table: 311
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 134443904
Equivalent to 8 /8s, 3 /16s and 115 /24s
Percentage of available APNIC address space announced: 72.4
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: 77182
Total ARIN prefixes after maximum aggregation: 47899
Prefixes being announced from the ARIN address blocks: 59744
Unique aggregates announced from the ARIN address blocks: 20824
ARIN Region origin ASes present in the Internet Routing Table: 8864
ARIN Region origin ASes announcing only one prefix: 3120
ARIN Region transit ASes present in the Internet Routing Table: 848
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 214976672
Equivalent to 12 /8s, 208 /16s and 72 /24s
Percentage of available ARIN address space announced: 71.2
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
31744 - 32767
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 23560
Total RIPE prefixes after maximum aggregation: 17160
Prefixes being announced from the RIPE address blocks: 20405
Unique aggregates announced from the RIPE address blocks: 13535
RIPE Region origin ASes present in the Internet Routing Table: 5112
RIPE Region origin ASes announcing only one prefix: 2750
RIPE Region transit ASes present in the Internet Routing Table: 890
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 149232000
Equivalent to 8 /8s, 229 /16s and 25 /24s
Percentage of available RIPE address space announced: 68.4
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
30720 - 31743
RIPE Address Blocks 62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5429
Total LACNIC prefixes after maximum aggregation: 2210
Prefixes being announced from the LACNIC address blocks: 5005
Unique aggregates announced from the LACNIC address blocks: 3137
LACNIC Region origin ASes present in the Internet Routing Table: 367
LACNIC Region origin ASes announcing only one prefix: 106
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 13
Number of LACNIC addresses announced to Internet: 13962752
Equivalent to 0 /8s, 213 /16s and 14 /24s
Percentage of available LACNIC address space announced: 41.6
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1150
Total AfriNIC prefixes after maximum aggregation: 676
Prefixes being announced from the AfriNIC address blocks: 736
Unique aggregates announced from the AfriNIC address blocks: 568
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 27
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1758464
Equivalent to 0 /8s, 26 /16s and 213 /24s
Percentage of available AfriNIC address space announced: 10.5
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 908 1101 649 Telstra Pty Ltd
4134 705 2457 116 Data Communications Bureau
4766 396 2904 241 Korea Internet Exchange for "
2907 361 1847 338 SINET Japan
9443 344 69 79 Primus Telecommunications
703 337 372 261 UUNET
17557 320 23 155 Pakistan Telecom
17676 295 4348 38 XTAGE CORPORATION
9583 292 44 11 Satyam Infoway Ltd.,
2764 287 289 236 connect.com.au pty ltd
7474 271 305 213 Optus Communications Pty Ltd
4538 249 1811 21 China Education and Research
4755 223 130 58 Videsh Sanchar Nigam Ltd. Aut
9929 218 154 30 China Netcom Corp.
9800 214 347 55 CHINA UNICOM
9942 214 69 127 COMindico Australia
9498 183 30 34 BHARTI BT INTERNET LTD.
17642 153 40 112 RequestDSL BGP AS# for Sydney
17964 151 117 58 Beijing Dian-Xin-Tong Network
7633 148 23 40 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1398 8678 968 UUNET Technologies, Inc.
7018 1379 7028 959 AT&T
1239 945 3090 661 Sprint
6197 774 484 252 BellSouth Network Solutions,
3356 764 10925 609 Level 3 Communications, LLC
209 721 3530 505 Qwest
18566 681 176 8 Covad Communications
4323 675 591 203 Time Warner Communications, I
20115 600 330 336 Charter Communications
6198 546 346 197 BellSouth Network Solutions,
7843 510 551 122 Adelphia Corp.
852 505 1124 401 Telus Advanced Communications
7066 503 207 271 Virginia Polytechnic Institut
7132 454 7418 312 Southwestern Bell Internet Se
2386 422 544 223 AT&T Data Communications Serv
19029 402 171 258 New Edge Networks
690 398 58 268 Merit Network
4355 391 323 101 EarthLink, Inc.
376 383 359 114 Reseau Interordinateurs Scien
27364 378 28 23 Armstrong Cable Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 688 2074 571 UUNET - Commercial IP service
3301 335 1175 316 TeliaNet Sweden
3320 281 1972 232 Deutsche Telekom AG
8220 267 410 252 COLT Internet - International
1257 243 504 189 SWIPnet Swedish IP Network
680 241 2027 237 DFN-IP service G-WiN
719 234 288 104 LANLINK autonomous system
13083 215 51 8 Mannesmann Datenverarbeitung
3246 189 425 187 Song Networks
786 175 1826 175 The JANET IP Service
5515 172 762 134 Sonera Solution Autonomous Sy
25186 168 201 109 France Telecom Transpac's Tra
8708 165 111 157 Romania Data Systems S.A.
3215 151 786 68 France Telecom Transpac
3303 138 557 138 Swisscom Ltd
5400 136 223 126 BT Ignite European Backbone
12302 131 18 35 MobiFon S.A.
3269 120 972 64 TELECOM ITALIA
2856 119 1294 109 BTnet UK Regional network
6746 106 17 95 Dynamic Network Technologies,
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 353 121 66 ImpSat
8151 239 336 123 UniNet S.A. de C.V.
11172 198 77 44 Servicios Alestra S.A de C.V
16814 155 10 5 NSS, S.A.
7303 142 53 23 Telecom Argentina Stet-France
6505 133 90 93 Global One Communicaoes Ltda
6503 128 220 93 AVANTEL, S.A.
6147 124 78 20 Telefonica Del Peru
11340 112 3 33 Red Universitaria Nacional
15311 78 18 38 Telefonica Empresas
6535 77 5 19 Chilesat Servicios Empresari
4270 70 18 9 Red de Interconexion Universi
11311 68 7 22 Sinectis S.A.
7080 66 4 2 Electronica y Comunicaciones
11992 66 24 30 Integrated Systems
14420 62 4 23 ANDINATEL S.A.
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
10292 60 5 27 TELECOMMUNICATIONS OF JAMAICA
1916 59 247 39 Fundacao de Amparo a Pesquisa
7738 59 218 13 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 249 632 218 The Internet Solution
5536 103 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 26 3 4 UUNET Kenya
16637 26 9 19 Johnnic e-Ventures
5713 24 93 22 Telkom SA Ltd
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
12455 22 4 2 Jambonet Autonomous system
8524 18 2 4 AUCEGYPT Autonomous System
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 2 5 Sudatel Internet Exchange Aut
17148 14 1 8 First National Bank
2609 12 10 3 Tunisia BackBone AS
8346 12 6 12 SONATEL-AS Autonomous System
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 681 673 Covad Communications
4134 705 589 Data Communications Bureau
6197 774 522 BellSouth Network Solutions,
4323 675 472 Time Warner Communications, I
7018 1379 420 AT&T
7843 510 388 Adelphia Corp.
27364 378 355 Armstrong Cable Services
6198 546 349 BellSouth Network Solutions,
22909 328 311 Comcast Cable Corporation
5668 321 305 Century Telephone
22773 331 301 Cox Communications, Inc. Atla
4355 391 290 EarthLink, Inc.
6140 353 287 ImpSat
1239 945 284 Sprint
9583 292 281 Satyam Infoway Ltd.,
376 383 269 Reseau Interordinateurs Scien
9443 344 265 Primus Telecommunications
20115 600 264 Charter Communications
1221 908 259 Telstra Pty Ltd
17676 295 257 XTAGE CORPORATION
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64512 PRIVATE 131.95.1.240/28 16430 University of Southe
64198 RESERVED 192.107.195.0/24 22767 NASA Earth Science D
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
64198 RESERVED 198.10.49.0/24 22767 NASA Earth Science D
64512 PRIVATE 204.70.1.0/24 3561 Cable & Wireless USA
23861 UNALLOCATED 210.93.46.0/24 3786 DACOM Corporation
23861 UNALLOCATED 210.93.47.0/24 3786 DACOM Corporation
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
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:4 /10:6 /11:15 /12:57
/13:105 /14:282 /15:497 /16:7548 /17:1852 /18:3440
/19:8904 /20:9346 /21:6699 /22:9422 /23:10992 /24:71724
/25:192 /26:298 /27:170 /28:28 /29:5 /30:43
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 665 681 Covad Communications
6197 619 774 BellSouth Network Solutions,
7018 505 1379 AT&T
701 420 1398 UUNET Technologies, Inc.
702 420 688 UUNET - Commercial IP service
6198 399 546 BellSouth Network Solutions,
7066 397 503 Virginia Polytechnic Institut
3356 396 764 Level 3 Communications, LLC
20115 380 600 Charter Communications
27364 372 378 Armstrong Cable Services
690 361 398 Merit Network
1239 331 945 Sprint
5668 284 321 Century Telephone
19029 262 402 New Edge Networks
25844 244 244 Skadden, Arps, Slate, Meagher
3320 228 281 Deutsche Telekom AG
4766 225 396 Korea Internet Exchange for "
6386 220 246 bellsouth.net, inc.
6517 216 240 Yipes Communications, Inc.
4355 215 391 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:756 13:1 15:6 16:1 17:3
20:7 24:873 32:83 38:44 40:26 44:2
55:1 56:1 57:13 61:350 62:451 63:1820
64:1830 65:1822 66:2188 67:256 68:635 69:366
80:450 81:193 82:62 128:144 129:261 130:69
131:79 132:17 134:175 135:16 136:128 137:115
138:126 139:39 140:158 141:132 142:102 143:46
144:85 145:39 146:291 147:74 148:290 149:85
150:119 151:61 152:212 153:61 154:1 155:131
156:62 157:56 158:138 159:143 160:46 161:51
162:369 163:70 164:332 165:163 166:104 167:218
168:176 169:96 170:306 171:8 192:5536 193:2524
194:2000 195:1292 196:517 198:3636 199:2833 200:2958
201:7 202:4289 203:5369 204:3026 205:2018 206:2271
207:2590 208:2430 209:2872 210:1020 211:413 212:896
213:1001 214:23 215:25 216:3373 217:796 218:118
219:82 220:153 221:18 222:1
End of report
