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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 02 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136107
Prefixes after maximum aggregation: 82812
Unique aggregates announced to Internet: 65908
Total ASes present in the Internet Routing Table: 16961
Origin-only ASes present in the Internet Routing Table: 14704
Origin ASes announcing only one prefix: 6792
Transit ASes present in the Internet Routing Table: 2257
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 31
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: 17
Number of addresses announced to Internet: 1274237412
Equivalent to 75 /8s, 243 /16s and 81 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 61006
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25725
Total APNIC prefixes after maximum aggregation: 13615
Prefixes being announced from the APNIC address blocks: 24040
Unique aggregates announced from the APNIC address blocks: 13511
APNIC Region origin ASes present in the Internet Routing Table: 2038
APNIC Region origin ASes announcing only one prefix: 610
APNIC Region transit ASes present in the Internet Routing Table: 323
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 140256768
Equivalent to 8 /8s, 92 /16s and 38 /24s
Percentage of available APNIC address space announced: 75.6
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: 78753
Total ARIN prefixes after maximum aggregation: 48563
Prefixes being announced from the ARIN address blocks: 60769
Unique aggregates announced from the ARIN address blocks: 21363
ARIN Region origin ASes present in the Internet Routing Table: 9070
ARIN Region origin ASes announcing only one prefix: 3219
ARIN Region transit ASes present in the Internet Routing Table: 893
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221231392
Equivalent to 13 /8s, 47 /16s and 185 /24s
Percentage of available ARIN address space announced: 73.3
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
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: 24744
Total RIPE prefixes after maximum aggregation: 17760
Prefixes being announced from the RIPE address blocks: 21574
Unique aggregates announced from the RIPE address blocks: 14261
RIPE Region origin ASes present in the Internet Routing Table: 5313
RIPE Region origin ASes announcing only one prefix: 2835
RIPE Region transit ASes present in the Internet Routing Table: 930
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157298688
Equivalent to 9 /8s, 96 /16s and 48 /24s
Percentage of available RIPE address space announced: 72.1
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
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: 5727
Total LACNIC prefixes after maximum aggregation: 2190
Prefixes being announced from the LACNIC address blocks: 5401
Unique aggregates announced from the LACNIC address blocks: 3410
LACNIC Region origin ASes present in the Internet Routing Table: 372
LACNIC Region origin ASes announcing only one prefix: 103
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14468352
Equivalent to 0 /8s, 220 /16s and 197 /24s
Percentage of available LACNIC address space announced: 43.1
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1157
Total AfriNIC prefixes after maximum aggregation: 684
Prefixes being announced from the AfriNIC address blocks: 739
Unique aggregates announced from the AfriNIC address blocks: 580
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 25
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1837056
Equivalent to 0 /8s, 28 /16s and 8 /24s
Percentage of available AfriNIC address space announced: 10.9
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 866 1107 627 Telstra Pty Ltd
4134 697 2975 117 Data Communications Bureau
4766 461 2916 251 Korea Internet Exchange for "
9583 430 38 109 Satyam Infoway Ltd.,
4755 364 129 52 Videsh Sanchar Nigam Ltd. Aut
2907 358 1862 334 SINET Japan
9443 355 69 80 Primus Telecommunications
703 341 374 263 UUNET
17557 324 23 162 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
9929 306 155 30 China Netcom Corp.
2764 295 274 241 connect.com.au pty ltd
7474 271 300 215 Optus Communications Pty Ltd
9942 224 71 128 COMindico Australia
9800 214 347 55 CHINA UNICOM
9498 189 31 42 BHARTI BT INTERNET LTD.
4780 188 193 26 Digital United Inc.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 152 23 52 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1414 6996 990 AT&T
701 1323 8561 952 UUNET Technologies, Inc.
1239 940 3039 636 Sprint
3356 883 10926 685 Level 3 Communications, LLC
209 729 3486 509 Qwest
18566 695 192 8 Covad Communications
4323 694 559 199 Time Warner Communications, I
6197 689 458 269 BellSouth Network Solutions,
20115 597 349 309 Charter Communications
6198 554 354 199 BellSouth Network Solutions,
7843 533 613 108 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 499 207 271 Virginia Polytechnic Institut
7132 481 7846 331 Southwestern Bell Internet Se
2386 430 579 232 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
4355 396 323 103 EarthLink, Inc.
690 393 57 267 Merit Network
22909 380 839 26 Comcast Cable Corporation
376 378 343 112 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 669 2039 559 UUNET - Commercial IP service
3320 287 2477 235 Deutsche Telekom AG
3301 271 984 262 TeliaNet Sweden
8220 265 412 253 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
719 231 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 195 451 193 Song Networks
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
3215 166 819 72 France Telecom Transpac
5515 166 762 133 Sonera Solution Autonomous Sy
25186 163 187 105 France Telecom Transpac's Tra
5400 151 225 136 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 131 1069 64 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
2856 116 1278 106 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 378 122 69 ImpSat
8151 266 373 131 UniNet S.A. de C.V.
11172 207 75 43 Servicios Alestra S.A de C.V
16814 162 11 6 NSS, S.A.
7303 140 52 30 Telecom Argentina Stet-France
6503 138 220 93 AVANTEL, S.A.
6505 132 90 92 Global One Communicaoes Ltda
6147 131 78 19 Telefonica Del Peru
11556 88 73 25 Cable-Wireless Panama
11992 88 9 28 Integrated Systems
6535 79 5 19 Chilesat Servicios Empresari
15311 77 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 69 7 16 Sinectis S.A.
14535 69 6 5 Techtel S.A.
14420 65 4 24 ANDINATEL S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
7738 62 234 14 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 252 632 219 The Internet Solution
5536 105 7 13 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 89 272 79 The Internetworking Company o
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 32 3 4 UUNET Kenya
16637 25 9 18 Johnnic e-Ventures
5713 24 93 22 Telkom SA Ltd
12455 24 4 2 Jambonet Autonomous system
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
8524 22 2 4 AUCEGYPT Autonomous System
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
12258 15 3 10 Vodacom Internet Company
20928 15 16 1 Noor Advanced Technologies AS
2609 13 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 695 687 Covad Communications
4134 697 580 Data Communications Bureau
4323 694 495 Time Warner Communications, I
7843 533 425 Adelphia Corp.
6197 689 420 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1323 371 UUNET Technologies, Inc.
6198 554 355 BellSouth Network Solutions,
22909 380 354 Comcast Cable Corporation
5668 363 348 Century Telephone
9583 430 321 Satyam Infoway Ltd.,
22773 360 321 Cox Communications, Inc. Atla
4755 364 312 Videsh Sanchar Nigam Ltd. Aut
6140 378 309 ImpSat
1239 940 304 Sprint
4355 396 293 EarthLink, Inc.
20115 597 288 Charter Communications
6347 372 287 SAVVIS Communications Corpora
9929 306 276 China Netcom Corp.
9443 355 275 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
29975 UNALLOCATED 196.46.160.0/20 3741 The Internet Solutio
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
156.154.16.0/22 7786 Lockheed Martin IMS
158.0.0.0/13 568 DISO-UNRRA
164.234.0.0/18 721 DLA Systems Automation Center
164.234.0.0/16 721 DLA Systems Automation Center
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 /8:18 /9:3 /10:6 /11:15 /12:57
/13:108 /14:293 /15:509 /16:7650 /17:1960 /18:3542
/19:9225 /20:9611 /21:6983 /22:9847 /23:11377 /24:74193
/25:191 /26:272 /27:161 /28:30 /29:4 /30:41
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 678 695 Covad Communications
6197 529 689 BellSouth Network Solutions,
7018 514 1414 AT&T
3356 488 883 Level 3 Communications, LLC
702 407 669 UUNET - Commercial IP service
6198 402 554 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 394 499 Virginia Polytechnic Institut
701 363 1323 UUNET Technologies, Inc.
1239 357 940 Sprint
690 356 393 Merit Network
20115 348 597 Charter Communications
5668 318 363 Century Telephone
4766 283 461 Korea Internet Exchange for "
9583 279 430 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
19029 239 366 New Edge Networks
9929 235 306 China Netcom Corp.
3320 234 287 Deutsche Telekom AG
13609 232 272 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:820 13:1 15:4 16:1 17:3
20:7 24:812 32:83 38:56 40:54 44:3
55:1 56:1 57:13 61:382 62:480 63:1816
64:1898 65:1936 66:2502 67:286 68:589 69:457
80:481 81:256 82:146 83:21 128:141 129:262
130:93 131:77 132:16 134:181 135:16 136:189
137:105 138:149 139:42 140:146 141:145 142:109
143:49 144:89 145:40 146:300 147:77 148:371
149:90 150:96 151:63 152:215 153:62 154:1
155:125 156:61 157:55 158:146 159:154 160:50
161:55 162:374 163:81 164:326 165:164 166:98
167:211 168:211 169:101 170:293 171:8 192:5500
193:2598 194:2022 195:1353 196:524 198:3651 199:2982
200:3215 201:7 202:4501 203:5444 204:2985 205:1984
206:2220 207:2595 208:2317 209:2908 210:1306 211:543
212:940 213:1077 214:26 215:26 216:3335 217:888
218:156 219:105 220:196 221:25 222:15
End of report
