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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 12 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136484
Prefixes after maximum aggregation: 82913
Unique aggregates announced to Internet: 65956
Total ASes present in the Internet Routing Table: 17014
Origin-only ASes present in the Internet Routing Table: 14754
Origin ASes announcing only one prefix: 6813
Transit ASes present in the Internet Routing Table: 2260
Transit-only ASes present in the Internet Routing Table: 78
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: 1275984612
Equivalent to 76 /8s, 13 /16s and 250 /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: 61257
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25867
Total APNIC prefixes after maximum aggregation: 13589
Prefixes being announced from the APNIC address blocks: 24193
Unique aggregates announced from the APNIC address blocks: 13474
APNIC Region origin ASes present in the Internet Routing Table: 2044
APNIC Region origin ASes announcing only one prefix: 610
APNIC Region transit ASes present in the Internet Routing Table: 322
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 140713088
Equivalent to 8 /8s, 99 /16s and 28 /24s
Percentage of available APNIC address space announced: 75.8
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: 78859
Total ARIN prefixes after maximum aggregation: 48598
Prefixes being announced from the ARIN address blocks: 60859
Unique aggregates announced from the ARIN address blocks: 21368
ARIN Region origin ASes present in the Internet Routing Table: 9086
ARIN Region origin ASes announcing only one prefix: 3216
ARIN Region transit ASes present in the Internet Routing Table: 897
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221592864
Equivalent to 13 /8s, 53 /16s and 61 /24s
Percentage of available ARIN address space announced: 73.4
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: 24853
Total RIPE prefixes after maximum aggregation: 17850
Prefixes being announced from the RIPE address blocks: 21656
Unique aggregates announced from the RIPE address blocks: 14356
RIPE Region origin ASes present in the Internet Routing Table: 5344
RIPE Region origin ASes announcing only one prefix: 2864
RIPE Region transit ASes present in the Internet Routing Table: 925
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 158307584
Equivalent to 9 /8s, 111 /16s and 149 /24s
Percentage of available RIPE address space announced: 55.5
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: 5774
Total LACNIC prefixes after maximum aggregation: 2192
Prefixes being announced from the LACNIC address blocks: 5446
Unique aggregates announced from the LACNIC address blocks: 3370
LACNIC Region origin ASes present in the Internet Routing Table: 369
LACNIC Region origin ASes announcing only one prefix: 99
LACNIC Region transit ASes present in the Internet Routing Table: 74
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14455296
Equivalent to 0 /8s, 220 /16s and 146 /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: 1130
Total AfriNIC prefixes after maximum aggregation: 684
Prefixes being announced from the AfriNIC address blocks: 750
Unique aggregates announced from the AfriNIC address blocks: 560
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: 4.8
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1839872
Equivalent to 0 /8s, 28 /16s and 19 /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 864 1091 629 Telstra Pty Ltd
4134 728 3055 120 Data Communications Bureau
4766 462 2916 251 Korea Internet Exchange for "
9583 435 40 82 Satyam Infoway Ltd.,
4755 360 129 50 Videsh Sanchar Nigam Ltd. Aut
2907 356 1862 332 SINET Japan
9443 354 69 79 Primus Telecommunications
703 341 374 263 UUNET
9929 337 155 31 China Netcom Corp.
17557 319 22 163 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
2764 294 273 240 connect.com.au pty ltd
7474 272 300 216 Optus Communications Pty Ltd
9942 224 71 127 COMindico Australia
9800 217 348 58 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 193 31 44 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 159 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1434 6981 998 AT&T
701 1323 8577 950 UUNET Technologies, Inc.
1239 940 3036 638 Sprint
3356 888 10928 684 Level 3 Communications, LLC
209 754 3490 513 Qwest
4323 716 559 199 Time Warner Communications, I
18566 697 192 8 Covad Communications
6197 688 458 270 BellSouth Network Solutions,
20115 594 349 310 Charter Communications
6198 558 355 203 BellSouth Network Solutions,
7843 532 616 107 Adelphia Corp.
852 512 1127 403 Telus Advanced Communications
7066 501 208 273 Virginia Polytechnic Institut
7132 461 7847 332 Southwestern Bell Internet Se
2386 433 579 235 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
4355 396 323 103 EarthLink, Inc.
22909 383 841 25 Comcast Cable Corporation
690 380 56 259 Merit Network
376 377 343 111 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 667 2039 558 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 271 984 262 TeliaNet Sweden
8220 265 412 252 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
719 199 288 103 LANLINK autonomous system
3246 195 451 193 Song Networks
5515 193 762 139 Sonera Solution Autonomous Sy
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
3215 166 819 72 France Telecom Transpac
25186 162 187 104 France Telecom Transpac's Tra
5400 155 225 140 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 117 1278 106 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 379 122 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 141 53 26 Telecom Argentina Stet-France
6503 138 220 93 AVANTEL, S.A.
6147 132 78 20 Telefonica Del Peru
6505 128 90 88 Global One Communicaoes Ltda
11992 88 9 28 Integrated Systems
11556 87 57 24 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
15311 75 18 38 Telefonica Empresas
14420 74 5 30 ANDINATEL S.A.
4270 70 18 9 Red de Interconexion Universi
11311 69 7 16 Sinectis S.A.
14259 69 4 5 GTD Internet S.A.
14535 69 6 5 Techtel 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
9129 33 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
8524 23 2 4 AUCEGYPT Autonomous System
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
15706 16 2 3 Sudatel Internet Exchange Aut
12258 15 3 10 Vodacom Internet Company
15808 14 1 6 Communication Solutions Ltd i
8346 13 6 12 SONATEL-AS Autonomous System
17148 13 1 7 First National Bank
2609 12 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 697 689 Covad Communications
4134 728 608 Data Communications Bureau
4323 716 517 Time Warner Communications, I
7843 532 425 Adelphia Corp.
6197 688 418 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1323 373 UUNET Technologies, Inc.
22909 383 358 Comcast Cable Corporation
6198 558 355 BellSouth Network Solutions,
9583 435 353 Satyam Infoway Ltd.,
5668 363 348 Century Telephone
22773 356 324 Cox Communications, Inc. Atla
6140 379 310 ImpSat
4755 360 310 Videsh Sanchar Nigam Ltd. Aut
9929 337 306 China Netcom Corp.
1239 940 302 Sprint
4355 396 293 EarthLink, Inc.
6347 371 287 SAVVIS Communications Corpora
20115 594 284 Charter Communications
9443 354 275 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 /14:295 /15:513 /16:7661 /17:1964 /18:3536
/19:9272 /20:9661 /21:6985 /22:9913 /23:11409 /24:74400
/25:195 /26:246 /27:144 /28:29 /29:4 /30:39
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 680 697 Covad Communications
7018 529 1434 AT&T
6197 528 688 BellSouth Network Solutions,
3356 490 888 Level 3 Communications, LLC
6198 405 558 BellSouth Network Solutions,
702 404 667 UUNET - Commercial IP service
27364 397 404 Armstrong Cable Services
7066 395 501 Virginia Polytechnic Institut
701 366 1323 UUNET Technologies, Inc.
1239 355 940 Sprint
20115 345 594 Charter Communications
690 343 380 Merit Network
5668 318 363 Century Telephone
4766 284 462 Korea Internet Exchange for "
9583 276 435 Satyam Infoway Ltd.,
9929 266 337 China Netcom Corp.
14824 247 272 NewSouth Communications Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
19029 243 370 New Edge Networks
3320 240 293 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:823 13:1 15:4 16:1 17:3
20:8 24:807 32:81 38:58 40:54 44:3
45:16 55:1 56:4 57:13 61:388 62:471
63:1809 64:1897 65:1938 66:2529 67:291 68:589
69:470 80:485 81:257 82:143 83:26 128:141
129:262 130:98 131:79 132:17 134:181 135:17
136:155 137:105 138:149 139:39 140:148 141:144
142:109 143:49 144:90 145:40 146:298 147:78
148:366 149:89 150:92 151:63 152:210 153:62
154:1 155:128 156:58 157:55 158:146 159:157
160:50 161:53 162:375 163:74 164:326 165:164
166:98 167:209 168:213 169:100 170:289 171:8
192:5509 193:2627 194:2026 195:1334 196:532 198:3641
199:2974 200:3263 201:8 202:4505 203:5469 204:2982
205:1970 206:2232 207:2614 208:2319 209:2912 210:1359
211:523 212:943 213:1093 214:26 215:26 216:3358
217:892 218:158 219:100 220:203 221:26 222:18
End of report
