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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 09 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136571
Prefixes after maximum aggregation: 82973
Unique aggregates announced to Internet: 65964
Total ASes present in the Internet Routing Table: 17000
Origin-only ASes present in the Internet Routing Table: 14748
Origin ASes announcing only one prefix: 6809
Transit ASes present in the Internet Routing Table: 2252
Transit-only ASes present in the Internet Routing Table: 76
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: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1276042852
Equivalent to 76 /8s, 14 /16s and 222 /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: 61360
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25830
Total APNIC prefixes after maximum aggregation: 13599
Prefixes being announced from the APNIC address blocks: 24150
Unique aggregates announced from the APNIC address blocks: 13498
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: 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: 140582528
Equivalent to 8 /8s, 97 /16s and 30 /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: 78926
Total ARIN prefixes after maximum aggregation: 48640
Prefixes being announced from the ARIN address blocks: 60870
Unique aggregates announced from the ARIN address blocks: 21348
ARIN Region origin ASes present in the Internet Routing Table: 9089
ARIN Region origin ASes announcing only one prefix: 3220
ARIN Region transit ASes present in the Internet Routing Table: 894
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221564192
Equivalent to 13 /8s, 52 /16s and 205 /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: 24877
Total RIPE prefixes after maximum aggregation: 17843
Prefixes being announced from the RIPE address blocks: 21706
Unique aggregates announced from the RIPE address blocks: 14345
RIPE Region origin ASes present in the Internet Routing Table: 5335
RIPE Region origin ASes announcing only one prefix: 2856
RIPE Region transit ASes present in the Internet Routing Table: 921
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 158299136
Equivalent to 9 /8s, 111 /16s and 116 /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: 5776
Total LACNIC prefixes after maximum aggregation: 2207
Prefixes being announced from the LACNIC address blocks: 5448
Unique aggregates announced from the LACNIC address blocks: 3382
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: 73
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14470144
Equivalent to 0 /8s, 220 /16s and 204 /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: 1161
Total AfriNIC prefixes after maximum aggregation: 684
Prefixes being announced from the AfriNIC address blocks: 749
Unique aggregates announced from the AfriNIC address blocks: 559
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: 10
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1839616
Equivalent to 0 /8s, 28 /16s and 18 /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 866 1092 631 Telstra Pty Ltd
4134 699 3023 119 Data Communications Bureau
4766 462 2916 251 Korea Internet Exchange for "
9583 441 39 100 Satyam Infoway Ltd.,
4755 362 129 52 Videsh Sanchar Nigam Ltd. Aut
2907 358 1862 334 SINET Japan
9443 354 69 79 Primus Telecommunications
9929 342 156 32 China Netcom Corp.
703 341 374 263 UUNET
17557 319 22 163 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
2764 295 274 241 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 160 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1431 6980 1000 AT&T
701 1321 8577 949 UUNET Technologies, Inc.
1239 940 3036 638 Sprint
3356 888 10943 685 Level 3 Communications, LLC
209 742 3488 513 Qwest
4323 712 559 198 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 532 612 107 Adelphia Corp.
852 512 1127 403 Telus Advanced Communications
7066 501 208 273 Virginia Polytechnic Institut
7132 482 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.
690 383 56 260 Merit Network
22909 383 841 25 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
702 667 2039 558 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 272 984 263 TeliaNet Sweden
8220 264 412 252 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
719 222 288 103 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
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 163 187 105 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 132 90 92 Global One Communicaoes Ltda
11556 88 73 25 Cable-Wireless Panama
11992 87 9 30 Integrated Systems
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
3208 33 2 1 ARN Network
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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 697 689 Covad Communications
4134 699 580 Data Communications Bureau
4323 712 514 Time Warner Communications, I
7843 532 425 Adelphia Corp.
6197 688 418 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1321 372 UUNET Technologies, Inc.
22909 383 358 Comcast Cable Corporation
6198 558 355 BellSouth Network Solutions,
5668 362 347 Century Telephone
9583 441 341 Satyam Infoway Ltd.,
22773 356 324 Cox Communications, Inc. Atla
6140 379 310 ImpSat
4755 362 310 Videsh Sanchar Nigam Ltd. Aut
9929 342 310 China Netcom Corp.
1239 940 302 Sprint
4355 396 293 EarthLink, Inc.
6347 370 287 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
23809 UNALLOCATED 202.52.176.0/20 4725 Japan Telecom Co., L
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 /15:512 /16:7662 /17:1965 /18:3538
/19:9273 /20:9640 /21:6989 /22:9906 /23:11415 /24:74465
/25:193 /26:268 /27:159 /28:30 /29:4 /30:40
/31:0 /32:10
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 680 697 Covad Communications
6197 528 688 BellSouth Network Solutions,
7018 528 1431 AT&T
3356 489 888 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
701 365 1321 UUNET Technologies, Inc.
1239 355 940 Sprint
690 346 383 Merit Network
20115 345 594 Charter Communications
5668 317 362 Century Telephone
4766 284 462 Korea Internet Exchange for "
9583 283 441 Satyam Infoway Ltd.,
9929 271 342 China Netcom Corp.
14824 244 269 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 12:826 13:1 15:4 16:1 17:3
20:8 24:819 32:82 38:57 40:54 44:3
45:16 55:1 56:3 57:13 61:387 62:472
63:1820 64:1904 65:1940 66:2513 67:289 68:589
69:467 80:485 81:257 82:144 83:25 128:143
129:262 130:98 131:79 132:16 134:181 135:17
136:194 137:105 138:148 139:42 140:145 141:144
142:109 143:49 144:92 145:40 146:300 147:78
148:366 149:89 150:92 151:63 152:211 153:62
154:1 155:127 156:58 157:54 158:146 159:157
160:50 161:53 162:374 163:82 164:327 165:164
166:98 167:211 168:214 169:100 170:292 171:8
192:5515 193:2650 194:2021 195:1337 196:531 198:3649
199:2990 200:3263 201:8 202:4501 203:5470 204:2985
205:1971 206:2217 207:2608 208:2324 209:2918 210:1354
211:521 212:929 213:1095 214:26 215:26 216:3332
217:893 218:158 219:100 220:203 221:26 222:17
End of report
