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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 04 Aug, 2004
Analysis Summary
----------------
BGP routing table entries examined: 143622
Prefixes after maximum aggregation: 85897
Unique aggregates announced to Internet: 69012
Total ASes present in the Internet Routing Table: 17711
Origin-only ASes present in the Internet Routing Table: 15368
Origin ASes announcing only one prefix: 7192
Transit ASes present in the Internet Routing Table: 2343
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 4
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1306734816
Equivalent to 77 /8s, 227 /16s and 48 /24s
Percentage of available address space announced: 35.3
Percentage of allocated address space announced: 57.0
Percentage of available address space allocated: 61.8
Total number of prefixes smaller than registry allocations: 65993
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 27457
Total APNIC prefixes after maximum aggregation: 13966
Prefixes being announced from the APNIC address blocks: 25701
Unique aggregates announced from the APNIC address blocks: 14095
APNIC Region origin ASes present in the Internet Routing Table: 2087
APNIC Region origin ASes announcing only one prefix: 627
APNIC Region transit ASes present in the Internet Routing Table: 326
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 154346752
Equivalent to 9 /8s, 51 /16s and 37 /24s
Percentage of available APNIC address space announced: 70.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
23552-24575
APNIC Address Blocks 58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 82224
Total ARIN prefixes after maximum aggregation: 50244
Prefixes being announced from the ARIN address blocks: 63751
Unique aggregates announced from the ARIN address blocks: 22108
ARIN Region origin ASes present in the Internet Routing Table: 9368
ARIN Region origin ASes announcing only one prefix: 3355
ARIN Region transit ASes present in the Internet Routing Table: 921
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 228373792
Equivalent to 13 /8s, 156 /16s and 181 /24s
Percentage of available ARIN address space announced: 68.1
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, 31744-33791
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 26526
Total RIPE prefixes after maximum aggregation: 18743
Prefixes being announced from the RIPE address blocks: 23340
Unique aggregates announced from the RIPE address blocks: 15509
RIPE Region origin ASes present in the Internet Routing Table: 5704
RIPE Region origin ASes announcing only one prefix: 3076
RIPE Region transit ASes present in the Internet Routing Table: 979
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 168082432
Equivalent to 10 /8s, 4 /16s and 188 /24s
Percentage of available RIPE address space announced: 58.9
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, 33792-34815
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: 6200
Total LACNIC prefixes after maximum aggregation: 2268
Prefixes being announced from the LACNIC address blocks: 5934
Unique aggregates announced from the LACNIC address blocks: 3585
LACNIC Region origin ASes present in the Internet Routing Table: 387
LACNIC Region origin ASes announcing only one prefix: 113
LACNIC Region transit ASes present in the Internet Routing Table: 75
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 15472128
Equivalent to 0 /8s, 236 /16s and 22 /24s
Percentage of available LACNIC address space announced: 46.1
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1211
Total AfriNIC prefixes after maximum aggregation: 676
Prefixes being announced from the AfriNIC address blocks: 824
Unique aggregates announced from the AfriNIC address blocks: 622
AfriNIC Region origin ASes present in the Internet Routing Table: 90
AfriNIC Region origin ASes announcing only one prefix: 21
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1906176
Equivalent to 0 /8s, 29 /16s and 22 /24s
Percentage of available AfriNIC address space announced: 11.4
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 818 1056 590 Telstra Pty Ltd
4134 815 4096 150 Data Communications Bureau
4766 511 2895 268 Korea Internet Exchange for "
9583 499 40 108 Satyam Infoway Ltd.,
4755 363 133 49 Videsh Sanchar Nigam Ltd. Aut
9443 355 70 80 Primus Telecommunications
2907 353 1840 327 SINET Japan
17676 341 5084 33 XTAGE CORPORATION
9929 333 159 31 China Netcom Corp.
17557 327 23 163 Pakistan Telecom
703 316 342 244 UUNET
2764 287 258 234 connect.com.au pty ltd
7474 266 269 204 Optus Communications Pty Ltd
9942 235 71 128 COMindico Australia
17633 232 56 6 ASN for Shandong Provincial N
9800 227 370 64 CHINA UNICOM
4802 226 25 140 Wantree Development
9498 218 49 49 BHARTI BT INTERNET LTD.
10036 202 18 183 C&M Communication Co. Ltd.
4837 195 2023 106 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1407 6840 976 AT&T
701 1299 8426 935 UUNET Technologies, Inc.
6347 949 390 100 SAVVIS Communications Corpora
1239 938 2875 627 Sprint
3356 884 10925 668 Level 3 Communications, LLC
4323 767 584 209 Time Warner Communications, I
18566 739 193 8 Covad Communications
6197 734 495 308 BellSouth Network Solutions,
209 613 3412 495 Qwest
721 570 20649 255 DLA Systems Automation Center
20115 568 377 293 Charter Communications
7843 514 677 129 Adelphia Corp.
852 511 1142 399 Telus Advanced Communications
7132 488 7905 370 Southwestern Bell Internet Se
6198 448 394 202 BellSouth Network Solutions,
705 421 158 271 UUNET Technologies, Inc.
2386 408 533 228 AT&T Data Communications Serv
22909 397 829 30 Comcast Cable Corporation
22773 393 796 64 Cox Communications, Inc. Atla
4355 391 323 101 EarthLink, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 651 2038 539 UUNET - Commercial IP service
3320 300 2468 237 Deutsche Telekom AG
3301 282 1098 271 TeliaNet Sweden
8220 279 448 266 COLT Internet - International
680 244 2025 239 DFN-IP service G-WiN
1257 216 747 185 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
3246 215 484 212 Song Networks
5515 200 842 146 Sonera Solution Autonomous Sy
8708 196 113 177 Romania Data Systems S.A.
3215 182 892 77 France Telecom Transpac
786 177 1794 177 The JANET IP Service
25186 172 156 114 France Telecom Transpac's Tra
6746 152 29 129 Dynamic Network Technologies,
5400 151 208 122 BT Ignite European Backbone
719 150 288 102 LANLINK autonomous system
3269 138 1131 64 TELECOM ITALIA
3303 130 609 129 Swisscom Ltd
8866 130 15 14 Bulgarian Telecommunication C
12302 128 18 32 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
11172 350 83 52 Servicios Alestra S.A de C.V
6140 330 137 68 ImpSat
8151 286 391 132 UniNet S.A. de C.V.
16814 203 13 7 NSS, S.A.
6147 187 86 20 Telefonica Del Peru
6503 135 202 91 AVANTEL, S.A.
6505 135 90 93 Global One Communicaoes Ltda
11664 133 11 21 Keytech SA
7303 119 55 18 Telecom Argentina Stet-France
11556 103 65 25 Cable-Wireless Panama
11992 91 9 29 Integrated Systems
14420 82 6 32 ANDINATEL S.A.
6535 81 5 16 Chilesat Servicios Empresari
11311 81 7 19 Sinectis S.A.
15311 75 19 37 Telefonica Empresas
5639 71 8 8 Telecommunications Services o
4270 70 18 9 Red de Interconexion Universi
14117 69 5 4 Telefonica del Sur S.A.
10292 67 6 26 TELECOMMUNICATIONS OF JAMAICA
11340 67 5 36 Red Universitaria Nacional
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 252 632 219 The Internet Solution
5536 113 16 4 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 92 276 81 The Internetworking Company o
11845 42 9 11 Data Pro Business Online
20928 42 16 1 Noor Advanced Technologies AS
24835 31 18 6 RAYA Telecom - Egypt
9129 29 3 4 UUNET Kenya
14988 29 16 1 Botswana Telecommunications C
6713 26 38 9 Itissalat Al-MAGHRIB
16637 26 9 19 Johnnic e-Ventures
5713 25 125 23 Telkom SA Ltd
8524 25 2 4 AUCEGYPT Autonomous System
12455 23 4 2 Jambonet Autonomous system
10798 18 1 12 Standard Bank of South Africa
8346 15 7 14 SONATEL-AS Autonomous System
12258 15 3 10 Vodacom Internet Company
15706 15 4 2 Sudatel Internet Exchange Aut
15808 13 1 2 Communication Solutions Ltd i
17148 13 1 7 First National Bank
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6347 949 849 SAVVIS Communications Corpora
18566 739 731 Covad Communications
4134 815 665 Data Communications Bureau
4323 767 558 Time Warner Communications, I
6197 734 426 BellSouth Network Solutions,
9583 499 391 Satyam Infoway Ltd.,
7843 514 385 Adelphia Corp.
22909 397 367 Comcast Cable Corporation
701 1299 364 UUNET Technologies, Inc.
5668 381 363 Century Telephone
6467 368 336 E.Spire Communications, Inc.
27364 349 330 Armstrong Cable Services
22773 393 329 Cox Communications, Inc. Atla
721 570 315 DLA Systems Automation Center
4755 363 314 Videsh Sanchar Nigam Ltd. Aut
1239 938 311 Sprint
17676 341 308 XTAGE CORPORATION
9929 333 302 China Netcom Corp.
11172 350 298 Servicios Alestra S.A de C.V
4355 391 290 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65217 PRIVATE 128.101.58.0/28 217 University of Minnes
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
63330 RESERVED 213.8.224.0/23 5486 Euronet Digital Comm
63330 RESERVED 213.8.226.0/23 5486 Euronet Digital Comm
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
76.176.0.0/16 22773 Cox Communications, Inc. Atla
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
156.154.16.0/22 7786 Lockheed Martin IMS
158.0.0.0/13 721 DLA Systems Automation Center
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
192.70.164.0/24 25689 National Research Council of
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
192.172.0.0/19 721 DLA Systems Automation Center
192.172.11.0/24 721 DLA Systems Automation Center
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 /12:61
/13:127 /14:300 /15:534 /16:7936 /17:2136 /18:3730
/19:9636 /20:10120 /21:7483 /22:10427 /23:11939 /24:78530
/25:223 /26:192 /27:108 /28:37 /29:7 /30:49
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6347 728 949 SAVVIS Communications Corpora
18566 722 739 Covad Communications
6197 554 734 BellSouth Network Solutions,
7018 539 1407 AT&T
3356 500 884 Level 3 Communications, LLC
702 403 651 UUNET - Commercial IP service
1239 369 938 Sprint
701 366 1299 UUNET Technologies, Inc.
9583 345 499 Satyam Infoway Ltd.,
27364 336 349 Armstrong Cable Services
5668 333 381 Century Telephone
6198 331 448 BellSouth Network Solutions,
4766 317 511 Korea Internet Exchange for "
20115 301 568 Charter Communications
6467 268 368 E.Spire Communications, Inc.
9929 265 333 China Netcom Corp.
13609 257 300 Choice One Communications Inc
14824 254 278 NewSouth Communications Corp.
3320 248 300 Deutsche Telekom AG
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:2 12:831 13:1 15:5 16:2
17:3 20:9 24:721 32:66 33:2 38:77
40:54 44:4 55:1 56:3 57:15 60:5
61:438 62:513 63:1895 64:2164 65:2044 66:2761
67:344 68:512 69:665 70:64 80:538 81:355
82:192 83:125 84:17 128:179 129:171 130:85
131:183 132:23 134:184 135:17 136:176 137:54
138:169 139:35 140:165 141:107 142:119 143:60
144:99 145:42 146:286 147:93 148:418 149:110
150:90 151:69 152:162 153:67 154:2 155:128
156:57 157:65 158:138 159:150 160:54 161:67
162:387 163:79 164:184 165:163 166:111 167:217
168:242 169:114 170:283 171:8 192:5575 193:2841
194:2083 195:1416 196:583 198:3659 199:3260 200:3639
201:10 202:4808 203:5664 204:3132 205:2072 206:2274
207:2503 208:2168 209:3051 210:1409 211:576 212:1010
213:1196 214:86 215:30 216:3774 217:983 218:176
219:124 220:227 221:30 222:128
End of report
