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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 30 Jul, 2004
Analysis Summary
----------------
BGP routing table entries examined: 143247
Prefixes after maximum aggregation: 85783
Unique aggregates announced to Internet: 68961
Total ASes present in the Internet Routing Table: 17696
Origin-only ASes present in the Internet Routing Table: 15350
Origin ASes announcing only one prefix: 7191
Transit ASes present in the Internet Routing Table: 2346
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: 3
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 19
Number of addresses announced to Internet: 1305789732
Equivalent to 77 /8s, 212 /16s and 197 /24s
Percentage of available address space announced: 35.2
Percentage of allocated address space announced: 57.8
Percentage of available address space allocated: 60.9
Total number of prefixes smaller than registry allocations: 65765
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 27406
Total APNIC prefixes after maximum aggregation: 13960
Prefixes being announced from the APNIC address blocks: 25647
Unique aggregates announced from the APNIC address blocks: 14079
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: 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: 153948416
Equivalent to 9 /8s, 45 /16s and 17 /24s
Percentage of available APNIC address space announced: 70.2
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: 82008
Total ARIN prefixes after maximum aggregation: 50167
Prefixes being announced from the ARIN address blocks: 63627
Unique aggregates announced from the ARIN address blocks: 22109
ARIN Region origin ASes present in the Internet Routing Table: 9352
ARIN Region origin ASes announcing only one prefix: 3353
ARIN Region transit ASes present in the Internet Routing Table: 927
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 228163360
Equivalent to 13 /8s, 153 /16s and 127 /24s
Percentage of available ARIN address space announced: 75.6
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, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 26438
Total RIPE prefixes after maximum aggregation: 18718
Prefixes being announced from the RIPE address blocks: 23237
Unique aggregates announced from the RIPE address blocks: 15463
RIPE Region origin ASes present in the Internet Routing Table: 5703
RIPE Region origin ASes announcing only one prefix: 3076
RIPE Region transit ASes present in the Internet Routing Table: 973
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 167848256
Equivalent to 10 /8s, 1 /16s and 41 /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: 6181
Total LACNIC prefixes after maximum aggregation: 2255
Prefixes being announced from the LACNIC address blocks: 5898
Unique aggregates announced from the LACNIC address blocks: 3575
LACNIC Region origin ASes present in the Internet Routing Table: 387
LACNIC Region origin ASes announcing only one prefix: 114
LACNIC Region transit ASes present in the Internet Routing Table: 74
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 15447552
Equivalent to 0 /8s, 235 /16s and 182 /24s
Percentage of available LACNIC address space announced: 46.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1211
Total AfriNIC prefixes after maximum aggregation: 683
Prefixes being announced from the AfriNIC address blocks: 820
Unique aggregates announced from the AfriNIC address blocks: 647
AfriNIC Region origin ASes present in the Internet Routing Table: 91
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: 4.8
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1913856
Equivalent to 0 /8s, 29 /16s and 52 /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 817 1056 589 Telstra Pty Ltd
4134 810 4092 150 Data Communications Bureau
4766 510 2895 267 Korea Internet Exchange for "
9583 493 39 105 Satyam Infoway Ltd.,
4755 395 133 51 Videsh Sanchar Nigam Ltd. Aut
9443 355 70 80 Primus Telecommunications
2907 353 1840 327 SINET Japan
17676 341 5084 33 XTAGE CORPORATION
9929 329 159 31 China Netcom Corp.
17557 326 23 163 Pakistan Telecom
703 316 342 245 UUNET
2764 287 258 234 connect.com.au pty ltd
7474 266 269 204 Optus Communications Pty Ltd
9942 234 71 127 COMindico Australia
9800 227 370 64 CHINA UNICOM
4802 224 25 139 Wantree Development
17633 222 56 6 ASN for Shandong Provincial N
9498 221 49 49 BHARTI BT INTERNET LTD.
10036 197 18 178 C&M Communication Co. Ltd.
4837 194 2019 105 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1408 6854 977 AT&T
701 1297 8447 933 UUNET Technologies, Inc.
6347 952 390 100 SAVVIS Communications Corpora
1239 943 2876 628 Sprint
3356 885 10925 668 Level 3 Communications, LLC
4323 753 568 211 Time Warner Communications, I
6197 745 496 311 BellSouth Network Solutions,
18566 740 192 7 Covad Communications
209 615 3425 500 Qwest
721 570 20737 256 DLA Systems Automation Center
20115 567 377 292 Charter Communications
7843 513 673 128 Adelphia Corp.
852 511 1142 399 Telus Advanced Communications
7132 488 7913 370 Southwestern Bell Internet Se
6198 450 394 203 BellSouth Network Solutions,
2386 409 533 229 AT&T Data Communications Serv
22909 397 829 30 Comcast Cable Corporation
4355 391 323 101 EarthLink, Inc.
22773 391 780 62 Cox Communications, Inc. Atla
705 388 128 264 UUNET Technologies, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 647 2036 537 UUNET - Commercial IP service
3320 300 2468 237 Deutsche Telekom AG
3301 282 1098 271 TeliaNet Sweden
8220 278 433 265 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 194 113 177 Romania Data Systems S.A.
3215 183 895 70 France Telecom Transpac
786 174 1794 174 The JANET IP Service
25186 172 156 114 France Telecom Transpac's Tra
6746 151 29 129 Dynamic Network Technologies,
719 150 288 102 LANLINK autonomous system
5400 147 207 121 BT Ignite European Backbone
3269 138 1131 64 TELECOM ITALIA
8866 132 15 14 Bulgarian Telecommunication C
3303 130 609 129 Swisscom Ltd
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 332 137 63 ImpSat
8151 284 390 130 UniNet S.A. de C.V.
16814 203 13 7 NSS, S.A.
6147 187 86 20 Telefonica Del Peru
6505 134 90 92 Global One Communicaoes Ltda
11664 128 11 21 Keytech SA
6503 127 202 85 AVANTEL, S.A.
7303 119 55 18 Telecom Argentina Stet-France
11556 103 65 25 Cable-Wireless Panama
11992 91 9 29 Integrated Systems
6535 81 5 16 Chilesat Servicios Empresari
11311 81 7 19 Sinectis S.A.
14420 81 5 31 ANDINATEL 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 111 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
16637 30 9 23 Johnnic e-Ventures
9129 29 3 4 UUNET Kenya
14988 29 16 1 Botswana Telecommunications C
6713 26 38 9 Itissalat Al-MAGHRIB
5713 25 125 23 Telkom SA Ltd
8524 24 2 7 AUCEGYPT Autonomous System
12455 23 4 2 Jambonet Autonomous system
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 4 2 Sudatel Internet Exchange Aut
8346 13 6 12 SONATEL-AS Autonomous System
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 952 852 SAVVIS Communications Corpora
18566 740 733 Covad Communications
4134 810 660 Data Communications Bureau
4323 753 542 Time Warner Communications, I
6197 745 434 BellSouth Network Solutions,
9583 493 388 Satyam Infoway Ltd.,
7843 513 385 Adelphia Corp.
22909 397 367 Comcast Cable Corporation
701 1297 364 UUNET Technologies, Inc.
5668 381 363 Century Telephone
4755 395 344 Videsh Sanchar Nigam Ltd. Aut
6467 369 336 E.Spire Communications, Inc.
27364 349 330 Armstrong Cable Services
22773 391 329 Cox Communications, Inc. Atla
1239 943 315 Sprint
721 570 314 DLA Systems Automation Center
17676 341 308 XTAGE CORPORATION
11172 350 298 Servicios Alestra S.A de C.V
9929 329 298 China Netcom Corp.
4355 391 290 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
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 /14:301 /15:531 /16:7925 /17:2131 /18:3721
/19:9603 /20:10116 /21:7451 /22:10409 /23:11908 /24:78317
/25:212 /26:191 /27:99 /28:37 /29:9 /30:50
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6347 731 952 SAVVIS Communications Corpora
18566 723 740 Covad Communications
6197 563 745 BellSouth Network Solutions,
7018 538 1408 AT&T
3356 501 885 Level 3 Communications, LLC
702 399 647 UUNET - Commercial IP service
1239 371 943 Sprint
701 367 1297 UUNET Technologies, Inc.
9583 340 493 Satyam Infoway Ltd.,
27364 336 349 Armstrong Cable Services
5668 333 381 Century Telephone
6198 332 450 BellSouth Network Solutions,
4766 315 510 Korea Internet Exchange for "
20115 300 567 Charter Communications
6467 268 369 E.Spire Communications, Inc.
9929 260 329 China Netcom Corp.
14824 254 278 NewSouth Communications Corp.
3320 248 300 Deutsche Telekom AG
13609 248 291 Choice One Communications Inc
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:1 12:835 13:1 15:5 16:2
17:3 20:7 24:736 32:66 33:2 38:75
40:54 44:4 55:1 56:3 57:16 60:5
61:432 62:508 63:1891 64:2122 65:2037 66:2735
67:346 68:509 69:690 70:64 80:532 81:349
82:190 83:120 84:5 128:177 129:171 130:85
131:183 132:23 134:179 135:17 136:176 137:55
138:169 139:35 140:165 141:105 142:120 143:60
144:100 145:42 146:286 147:93 148:418 149:110
150:90 151:69 152:162 153:66 154:2 155:128
156:57 157:65 158:138 159:147 160:54 161:66
162:387 163:79 164:183 165:164 166:111 167:218
168:239 169:114 170:284 171:8 192:5565 193:2838
194:2077 195:1408 196:580 198:3650 199:3257 200:3610
201:10 202:4793 203:5678 204:3101 205:2085 206:2268
207:2502 208:2179 209:3071 210:1406 211:572 212:1004
213:1190 214:81 215:30 216:3765 217:981 218:171
219:121 220:227 221:30 222:118
End of report
