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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 06 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136210
Prefixes after maximum aggregation: 82911
Unique aggregates announced to Internet: 66046
Total ASes present in the Internet Routing Table: 16975
Origin-only ASes present in the Internet Routing Table: 14726
Origin ASes announcing only one prefix: 6794
Transit ASes present in the Internet Routing Table: 2249
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: 18
Number of addresses announced to Internet: 1275201764
Equivalent to 76 /8s, 2 /16s and 8 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 57.3
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61132
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25694
Total APNIC prefixes after maximum aggregation: 13614
Prefixes being announced from the APNIC address blocks: 24018
Unique aggregates announced from the APNIC address blocks: 13475
APNIC Region origin ASes present in the Internet Routing Table: 2035
APNIC Region origin ASes announcing only one prefix: 608
APNIC Region transit ASes present in the Internet Routing Table: 324
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 140485376
Equivalent to 8 /8s, 95 /16s and 163 /24s
Percentage of available APNIC address space announced: 75.7
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: 78791
Total ARIN prefixes after maximum aggregation: 48618
Prefixes being announced from the ARIN address blocks: 60778
Unique aggregates announced from the ARIN address blocks: 21425
ARIN Region origin ASes present in the Internet Routing Table: 9076
ARIN Region origin ASes announcing only one prefix: 3213
ARIN Region transit ASes present in the Internet Routing Table: 891
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221291552
Equivalent to 13 /8s, 48 /16s and 164 /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: 24794
Total RIPE prefixes after maximum aggregation: 17797
Prefixes being announced from the RIPE address blocks: 21627
Unique aggregates announced from the RIPE address blocks: 14304
RIPE Region origin ASes present in the Internet Routing Table: 5324
RIPE Region origin ASes announcing only one prefix: 2848
RIPE Region transit ASes present in the Internet Routing Table: 919
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157949952
Equivalent to 9 /8s, 106 /16s and 32 /24s
Percentage of available RIPE address space announced: 55.4
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, 80/5, 88/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5767
Total LACNIC prefixes after maximum aggregation: 2197
Prefixes being announced from the LACNIC address blocks: 5434
Unique aggregates announced from the LACNIC address blocks: 3416
LACNIC Region origin ASes present in the Internet Routing Table: 372
LACNIC Region origin ASes announcing only one prefix: 101
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14471680
Equivalent to 0 /8s, 220 /16s and 210 /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: 1163
Total AfriNIC prefixes after maximum aggregation: 685
Prefixes being announced from the AfriNIC address blocks: 747
Unique aggregates announced from the AfriNIC address blocks: 588
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 24
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: 16
Number of AfriNIC addresses announced to Internet: 1839104
Equivalent to 0 /8s, 28 /16s and 16 /24s
Percentage of available AfriNIC address space announced: 11.0
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 870 1108 630 Telstra Pty Ltd
4134 699 3023 119 Data Communications Bureau
4766 462 2916 251 Korea Internet Exchange for "
9583 437 39 98 Satyam Infoway Ltd.,
4755 363 129 51 Videsh Sanchar Nigam Ltd. Aut
2907 358 1862 334 SINET Japan
9443 355 69 80 Primus Telecommunications
703 340 374 262 UUNET
17557 321 23 160 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
9929 306 156 32 China Netcom Corp.
2764 295 274 241 connect.com.au pty ltd
7474 271 300 215 Optus Communications Pty Ltd
9942 224 71 127 COMindico Australia
9800 217 348 58 CHINA UNICOM
9498 192 31 43 BHARTI BT INTERNET LTD.
4780 189 193 26 Digital United Inc.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 160 23 50 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1418 6977 993 AT&T
701 1320 8560 949 UUNET Technologies, Inc.
1239 943 3040 641 Sprint
3356 879 10926 683 Level 3 Communications, LLC
209 732 3487 510 Qwest
18566 696 192 8 Covad Communications
4323 694 559 198 Time Warner Communications, I
6197 685 458 269 BellSouth Network Solutions,
20115 597 349 309 Charter Communications
6198 558 355 203 BellSouth Network Solutions,
7843 532 612 107 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 498 207 271 Virginia Polytechnic Institut
7132 482 7847 332 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.
690 392 57 266 Merit Network
22909 381 840 27 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
702 671 2039 561 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 270 984 261 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
719 223 288 103 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 153 225 138 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 134 1101 65 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 259 372 125 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
14420 73 5 29 ANDINATEL S.A.
4270 71 18 9 Red de Interconexion Universi
11311 69 7 16 Sinectis S.A.
14535 69 6 5 Techtel S.A.
14259 66 4 9 GTD Internet S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 254 632 219 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
14988 25 16 1 Botswana Telecommunications C
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
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
2609 13 26 4 Tunisia BackBone AS
8346 13 6 12 SONATEL-AS Autonomous System
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 696 688 Covad Communications
4134 699 580 Data Communications Bureau
4323 694 496 Time Warner Communications, I
7843 532 425 Adelphia Corp.
6197 685 416 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1320 371 UUNET Technologies, Inc.
6198 558 355 BellSouth Network Solutions,
22909 381 354 Comcast Cable Corporation
5668 361 346 Century Telephone
9583 437 339 Satyam Infoway Ltd.,
22773 360 321 Cox Communications, Inc. Atla
4755 363 312 Videsh Sanchar Nigam Ltd. Aut
6140 378 309 ImpSat
1239 943 302 Sprint
4355 396 293 EarthLink, Inc.
20115 597 288 Charter Communications
6347 371 287 SAVVIS Communications Corpora
9443 355 275 Primus Telecommunications
9929 306 274 China Netcom Corp.
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
172.64.34.0/24 12735 Netone Bilgi Ve Iletisim Hizm
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 /14:294 /15:511 /16:7651 /17:1962 /18:3538
/19:9227 /20:9639 /21:6983 /22:9852 /23:11395 /24:74250
/25:190 /26:267 /27:158 /28:30 /29:4 /30:41
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 679 696 Covad Communications
6197 525 685 BellSouth Network Solutions,
7018 517 1418 AT&T
3356 485 879 Level 3 Communications, LLC
702 409 671 UUNET - Commercial IP service
6198 405 558 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 393 498 Virginia Polytechnic Institut
701 364 1320 UUNET Technologies, Inc.
1239 357 943 Sprint
690 355 392 Merit Network
20115 348 597 Charter Communications
5668 317 361 Century Telephone
4766 284 462 Korea Internet Exchange for "
9583 279 437 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
3320 240 293 Deutsche Telekom AG
19029 240 367 New Edge Networks
9929 235 306 China Netcom Corp.
13609 232 272 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:823 13:1 15:4 16:1 17:3
20:8 24:816 32:82 38:57 40:54 44:3
45:13 55:1 56:2 57:13 61:388 62:482
63:1815 64:1899 65:1940 66:2489 67:289 68:587
69:465 80:481 81:256 82:143 83:25 128:142
129:262 130:96 131:79 132:16 134:181 135:16
136:191 137:104 138:149 139:40 140:147 141:145
142:108 143:49 144:92 145:40 146:300 147:76
148:366 149:89 150:92 151:63 152:215 153:62
154:1 155:125 156:58 157:55 158:146 159:156
160:50 161:55 162:373 163:81 164:325 165:164
166:98 167:211 168:214 169:101 170:294 171:8
172:1 192:5497 193:2623 194:2022 195:1328 196:532
198:3652 199:2989 200:3252 201:7 202:4492 203:5438
204:2982 205:1972 206:2212 207:2600 208:2327 209:2908
210:1306 211:529 212:950 213:1085 214:26 215:26
216:3330 217:892 218:157 219:100 220:196 221:25
222:16
End of report
