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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 28 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 137062
Prefixes after maximum aggregation: 83253
Unique aggregates announced to Internet: 66464
Total ASes present in the Internet Routing Table: 17116
Origin-only ASes present in the Internet Routing Table: 14843
Origin ASes announcing only one prefix: 6857
Transit ASes present in the Internet Routing Table: 2273
Transit-only ASes present in the Internet Routing Table: 84
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 21
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: 1283089924
Equivalent to 76 /8s, 122 /16s and 102 /24s
Percentage of available address space announced: 34.6
Percentage of allocated address space announced: 57.7
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61509
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 26196
Total APNIC prefixes after maximum aggregation: 13643
Prefixes being announced from the APNIC address blocks: 24508
Unique aggregates announced from the APNIC address blocks: 13649
APNIC Region origin ASes present in the Internet Routing Table: 2042
APNIC Region origin ASes announcing only one prefix: 608
APNIC Region transit ASes present in the Internet Routing Table: 331
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 145576448
Equivalent to 8 /8s, 173 /16s and 82 /24s
Percentage of available APNIC address space announced: 78.4
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: 78772
Total ARIN prefixes after maximum aggregation: 48742
Prefixes being announced from the ARIN address blocks: 60853
Unique aggregates announced from the ARIN address blocks: 21492
ARIN Region origin ASes present in the Internet Routing Table: 9133
ARIN Region origin ASes announcing only one prefix: 3245
ARIN Region transit ASes present in the Internet Routing Table: 895
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 222017184
Equivalent to 13 /8s, 59 /16s and 182 /24s
Percentage of available ARIN address space announced: 73.5
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: 25134
Total RIPE prefixes after maximum aggregation: 17977
Prefixes being announced from the RIPE address blocks: 21943
Unique aggregates announced from the RIPE address blocks: 14446
RIPE Region origin ASes present in the Internet Routing Table: 5392
RIPE Region origin ASes announcing only one prefix: 2878
RIPE Region transit ASes present in the Internet Routing Table: 927
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 159843840
Equivalent to 9 /8s, 135 /16s and 6 /24s
Percentage of available RIPE address space announced: 56.0
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: 5810
Total LACNIC prefixes after maximum aggregation: 2217
Prefixes being announced from the LACNIC address blocks: 5452
Unique aggregates announced from the LACNIC address blocks: 3406
LACNIC Region origin ASes present in the Internet Routing Table: 374
LACNIC Region origin ASes announcing only one prefix: 104
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: 14629632
Equivalent to 0 /8s, 223 /16s and 59 /24s
Percentage of available LACNIC address space announced: 43.6
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1149
Total AfriNIC prefixes after maximum aggregation: 674
Prefixes being announced from the AfriNIC address blocks: 755
Unique aggregates announced from the AfriNIC address blocks: 561
AfriNIC Region origin ASes present in the Internet Routing Table: 90
AfriNIC Region origin ASes announcing only one prefix: 22
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: 1840128
Equivalent to 0 /8s, 28 /16s and 20 /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 852 1091 621 Telstra Pty Ltd
4134 768 3480 137 Data Communications Bureau
4766 479 2917 258 Korea Internet Exchange for "
9583 478 40 82 Satyam Infoway Ltd.,
4755 365 129 52 Videsh Sanchar Nigam Ltd. Aut
2907 355 1841 331 SINET Japan
9443 354 69 78 Primus Telecommunications
9929 348 155 31 China Netcom Corp.
17676 341 5084 33 XTAGE CORPORATION
703 335 373 258 UUNET
17557 324 23 163 Pakistan Telecom
2764 291 273 239 connect.com.au pty ltd
7474 271 284 212 Optus Communications Pty Ltd
9942 222 70 125 COMindico Australia
9800 219 364 59 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 211 31 45 BHARTI BT INTERNET LTD.
4837 182 1683 105 chinanet IDC center beijing n
9304 169 159 24 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 1425 6948 997 AT&T
701 1315 8538 942 UUNET Technologies, Inc.
1239 936 3032 634 Sprint
3356 897 10967 689 Level 3 Communications, LLC
209 761 3482 521 Qwest
4323 717 561 199 Time Warner Communications, I
18566 700 192 8 Covad Communications
6197 699 513 258 BellSouth Network Solutions,
6198 564 368 206 BellSouth Network Solutions,
20115 519 342 282 Charter Communications
852 513 1127 404 Telus Advanced Communications
7066 504 208 273 Virginia Polytechnic Institut
7843 499 632 111 Adelphia Corp.
7132 450 7847 332 Southwestern Bell Internet Se
2386 428 579 231 AT&T Data Communications Serv
27364 414 29 24 Armstrong Cable Services
4355 391 323 101 EarthLink, Inc.
22909 385 840 24 Comcast Cable Corporation
6347 384 386 89 SAVVIS Communications Corpora
376 380 343 112 Reseau Interordinateurs Scien
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 661 2038 552 UUNET - Commercial IP service
3320 297 2477 237 Deutsche Telekom AG
3301 268 968 258 TeliaNet Sweden
8220 268 412 255 COLT Internet - International
680 244 2025 239 DFN-IP service G-WiN
1257 238 510 197 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
5515 201 779 143 Sonera Solution Autonomous Sy
719 200 288 103 LANLINK autonomous system
3246 196 449 194 Song Networks
25186 176 188 117 France Telecom Transpac's Tra
786 175 1826 175 The JANET IP Service
8708 175 111 164 Romania Data Systems S.A.
3215 168 815 71 France Telecom Transpac
5400 157 241 138 BT Ignite European Backbone
6746 137 28 114 Dynamic Network Technologies,
3303 135 610 135 Swisscom Ltd
3269 134 1101 65 TELECOM ITALIA
12302 122 18 29 MobiFon S.A.
1273 112 166 89 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 379 122 74 ImpSat
8151 261 357 129 UniNet S.A. de C.V.
11172 208 75 43 Servicios Alestra S.A de C.V
16814 163 11 6 NSS, S.A.
6147 150 78 20 Telefonica Del Peru
7303 140 53 27 Telecom Argentina Stet-France
6503 136 220 93 AVANTEL, S.A.
6505 132 90 91 Global One Communicaoes Ltda
11992 89 9 28 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
14420 77 5 33 ANDINATEL S.A.
15311 74 18 37 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 70 7 15 Sinectis S.A.
14535 70 6 5 Techtel S.A.
14259 69 4 5 GTD Internet S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 254 632 219 The Internet Solution
5536 106 8 3 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 31 3 4 UUNET Kenya
24835 31 18 6 RAYA Telecom - Egypt
5713 26 125 24 Telkom SA Ltd
12455 25 4 2 Jambonet Autonomous system
14988 25 16 1 Botswana Telecommunications C
16637 25 9 18 Johnnic e-Ventures
6713 24 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
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 700 692 Covad Communications
4134 768 631 Data Communications Bureau
4323 717 518 Time Warner Communications, I
6197 699 441 BellSouth Network Solutions,
9583 478 396 Satyam Infoway Ltd.,
27364 414 390 Armstrong Cable Services
7843 499 388 Adelphia Corp.
701 1315 373 UUNET Technologies, Inc.
22909 385 361 Comcast Cable Corporation
6198 564 358 BellSouth Network Solutions,
5668 367 351 Century Telephone
22773 362 326 Cox Communications, Inc. Atla
9929 348 317 China Netcom Corp.
4755 365 313 Videsh Sanchar Nigam Ltd. Aut
17676 341 308 XTAGE CORPORATION
6140 379 305 ImpSat
1239 936 302 Sprint
6347 384 295 SAVVIS Communications Corpora
4355 391 290 EarthLink, Inc.
9443 354 276 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18416 UNALLOCATED 61.56.96.0/24 9919 New Century InfoComm
18416 UNALLOCATED 61.56.96.0/20 9919 New Century InfoComm
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
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 /12:58
/13:112 /14:294 /15:508 /16:7740 /17:1990 /18:3553
/19:9329 /20:9719 /21:7020 /22:9938 /23:11422 /24:74645
/25:208 /26:252 /27:135 /28:29 /29:4 /30:51
/31:0 /32:13
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 683 700 Covad Communications
7018 535 1425 AT&T
6197 532 699 BellSouth Network Solutions,
3356 498 897 Level 3 Communications, LLC
27364 407 414 Armstrong Cable Services
6198 402 564 BellSouth Network Solutions,
702 399 661 UUNET - Commercial IP service
7066 397 504 Virginia Polytechnic Institut
701 365 1315 UUNET Technologies, Inc.
1239 355 936 Sprint
5668 320 367 Century Telephone
9583 318 478 Satyam Infoway Ltd.,
4766 299 479 Korea Internet Exchange for "
690 295 332 Merit Network
9929 277 348 China Netcom Corp.
20115 273 519 Charter Communications
14824 250 275 NewSouth Communications Corp.
3320 244 297 Deutsche Telekom AG
25844 244 244 Skadden, Arps, Slate, Meagher
13609 233 274 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:816 13:1 15:4 16:1 17:3
20:8 24:790 32:81 38:63 40:54 44:3
55:1 56:4 57:13 61:404 62:454 63:1840
64:1850 65:1952 66:2502 67:294 68:541 69:505
70:64 80:507 81:273 82:156 83:34 128:144
129:232 130:77 131:89 132:19 133:2 134:185
135:17 136:147 137:104 138:152 139:38 140:149
141:134 142:108 143:50 144:91 145:41 146:291
147:77 148:365 149:95 150:93 151:64 152:189
153:62 154:1 155:121 156:133 157:54 158:146
159:147 160:51 161:53 162:380 163:80 164:330
165:162 166:97 167:210 168:218 169:104 170:287
171:8 192:5519 193:2668 194:2030 195:1356 196:537
198:3637 199:3013 200:3272 201:8 202:4566 203:5504
204:2982 205:1974 206:2271 207:2484 208:2290 209:2855
210:1393 211:521 212:962 213:1152 214:35 215:23
216:3348 217:895 218:170 219:98 220:210 221:28
222:26
End of report
