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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 05 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135970
Prefixes after maximum aggregation: 82761
Unique aggregates announced to Internet: 65923
Total ASes present in the Internet Routing Table: 16950
Origin-only ASes present in the Internet Routing Table: 14711
Origin ASes announcing only one prefix: 6776
Transit ASes present in the Internet Routing Table: 2239
Transit-only ASes present in the Internet Routing Table: 79
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: 1273617380
Equivalent to 75 /8s, 233 /16s and 219 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 57.2
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61021
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25676
Total APNIC prefixes after maximum aggregation: 13572
Prefixes being announced from the APNIC address blocks: 24000
Unique aggregates announced from the APNIC address blocks: 13473
APNIC Region origin ASes present in the Internet Routing Table: 2034
APNIC Region origin ASes announcing only one prefix: 606
APNIC Region transit ASes present in the Internet Routing Table: 325
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 140456960
Equivalent to 8 /8s, 95 /16s and 52 /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: 78737
Total ARIN prefixes after maximum aggregation: 48596
Prefixes being announced from the ARIN address blocks: 60749
Unique aggregates announced from the ARIN address blocks: 21427
ARIN Region origin ASes present in the Internet Routing Table: 9071
ARIN Region origin ASes announcing only one prefix: 3212
ARIN Region transit ASes present in the Internet Routing Table: 889
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221200928
Equivalent to 13 /8s, 47 /16s and 66 /24s
Percentage of available ARIN address space announced: 73.2
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: 24646
Total RIPE prefixes after maximum aggregation: 17710
Prefixes being announced from the RIPE address blocks: 21514
Unique aggregates announced from the RIPE address blocks: 14258
RIPE Region origin ASes present in the Internet Routing Table: 5301
RIPE Region origin ASes announcing only one prefix: 2833
RIPE Region transit ASes present in the Internet Routing Table: 911
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 156944896
Equivalent to 9 /8s, 90 /16s and 202 /24s
Percentage of available RIPE address space announced: 55.0
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: 5750
Total LACNIC prefixes after maximum aggregation: 2198
Prefixes being announced from the LACNIC address blocks: 5418
Unique aggregates announced from the LACNIC address blocks: 3409
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: 14432768
Equivalent to 0 /8s, 220 /16s and 58 /24s
Percentage of available LACNIC address space announced: 43.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1160
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: 4.8
Max AfriNIC Region AS path length visible: 15
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 846 1105 609 Telstra Pty Ltd
4134 699 3023 119 Data Communications Bureau
4766 462 2916 251 Korea Internet Exchange for "
9583 434 38 104 Satyam Infoway Ltd.,
2907 358 1862 334 SINET Japan
9443 355 69 80 Primus Telecommunications
4755 349 125 51 Videsh Sanchar Nigam Ltd. Aut
703 340 374 262 UUNET
17557 321 23 160 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
9929 304 155 30 China Netcom Corp.
2764 295 274 241 connect.com.au pty ltd
7474 271 300 215 Optus Communications Pty Ltd
9942 224 71 127 COMindico Australia
9800 217 348 58 CHINA UNICOM
9498 190 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 1417 6977 995 AT&T
701 1320 8561 949 UUNET Technologies, Inc.
1239 944 3040 640 Sprint
3356 880 10926 684 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 499 207 271 Virginia Polytechnic Institut
7132 481 7831 331 Southwestern Bell Internet Se
2386 428 579 230 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 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
702 671 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.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
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
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
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 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 380 354 Comcast Cable Corporation
5668 363 348 Century Telephone
9583 434 330 Satyam Infoway Ltd.,
22773 360 321 Cox Communications, Inc. Atla
6140 378 309 ImpSat
1239 944 304 Sprint
4755 349 298 Videsh Sanchar Nigam Ltd. Aut
4355 396 293 EarthLink, Inc.
20115 597 288 Charter Communications
6347 371 287 SAVVIS Communications Corpora
9443 355 275 Primus Telecommunications
9929 304 274 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 /14:293 /15:511 /16:7637 /17:1954 /18:3521
/19:9214 /20:9610 /21:6953 /22:9819 /23:11374 /24:74177
/25:190 /26:267 /27:157 /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 1417 AT&T
3356 486 880 Level 3 Communications, LLC
702 409 671 UUNET - Commercial IP service
6198 405 558 BellSouth Network Solutions,
27364 397 404 Armstrong Cable Services
7066 394 499 Virginia Polytechnic Institut
701 364 1320 UUNET Technologies, Inc.
1239 358 944 Sprint
690 355 392 Merit Network
20115 348 597 Charter Communications
5668 318 363 Century Telephone
4766 284 462 Korea Internet Exchange for "
9583 277 434 Satyam Infoway Ltd.,
25844 244 244 Skadden, Arps, Slate, Meagher
3320 240 293 Deutsche Telekom AG
19029 239 366 New Edge Networks
9929 233 304 China Netcom Corp.
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
20:8 24:816 32:82 38:57 40:53 44:3
45:13 55:1 56:1 57:13 61:386 62:481
63:1819 64:1902 65:1939 66:2488 67:288 68:587
69:462 80:480 81:255 82:148 83:23 128:143
129:261 130:95 131:78 132:16 134:181 135:16
136:190 137:104 138:149 139:40 140:147 141:145
142:108 143:49 144:89 145:40 146:300 147:76
148:366 149:89 150:96 151:61 152:215 153:62
154:1 155:124 156:58 157:55 158:146 159:156
160:50 161:55 162:373 163:79 164:325 165:164
166:98 167:211 168:212 169:101 170:291 171:8
172:1 192:5493 193:2609 194:2012 195:1347 196:532
198:3651 199:2990 200:3238 201:7 202:4506 203:5417
204:2979 205:1975 206:2208 207:2599 208:2321 209:2903
210:1305 211:543 212:948 213:1068 214:26 215:26
216:3328 217:894 218:156 219:98 220:196 221:25
222:16
End of report
