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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 04 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 161135
Prefixes after maximum aggregation: 93748
Unique aggregates announced to Internet: 77737
Total ASes present in the Internet Routing Table: 19547
Origin-only ASes present in the Internet Routing Table: 17009
Origin ASes announcing only one prefix: 7979
Transit ASes present in the Internet Routing Table: 2538
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 29
Prefixes from unregistered ASNs in the Routing Table: 12
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1403185216
Equivalent to 83 /8s, 162 /16s and 232 /24s
Percentage of available address space announced: 37.9
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 75398
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32980
Total APNIC prefixes after maximum aggregation: 15523
Prefixes being announced from the APNIC address blocks: 30914
Unique aggregates announced from the APNIC address blocks: 15700
APNIC Region origin ASes present in the Internet Routing Table: 2259
APNIC Region origin ASes announcing only one prefix: 661
APNIC Region transit ASes present in the Internet Routing Table: 339
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 182684032
Equivalent to 10 /8s, 227 /16s and 137 /24s
Percentage of available APNIC address space announced: 67.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575
APNIC Address Blocks 58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 87366
Total ARIN prefixes after maximum aggregation: 53299
Prefixes being announced from the ARIN address blocks: 68200
Unique aggregates announced from the ARIN address blocks: 25053
ARIN Region origin ASes present in the Internet Routing Table: 9885
ARIN Region origin ASes announcing only one prefix: 3601
ARIN Region transit ASes present in the Internet Routing Table: 932
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 247458560
Equivalent to 14 /8s, 191 /16s and 235 /24s
Percentage of available ARIN address space announced: 70.2
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 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, 29696-30719, 31744-33791
35840-36863
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30600
Total RIPE prefixes after maximum aggregation: 21138
Prefixes being announced from the RIPE address blocks: 27698
Unique aggregates announced from the RIPE address blocks: 18448
RIPE Region origin ASes present in the Internet Routing Table: 6604
RIPE Region origin ASes announcing only one prefix: 3490
RIPE Region transit ASes present in the Internet Routing Table: 1112
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 29
Number of RIPE addresses announced to Internet: 202266304
Equivalent to 12 /8s, 14 /16s and 86 /24s
Percentage of available RIPE address space announced: 70.9
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839
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: 8615
Total LACNIC prefixes after maximum aggregation: 3027
Prefixes being announced from the LACNIC address blocks: 7035
Unique aggregates announced from the LACNIC address blocks: 4080
LACNIC Region origin ASes present in the Internet Routing Table: 611
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 110
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18522880
Equivalent to 1 /8s, 26 /16s and 163 /24s
Percentage of available LACNIC address space announced: 55.2
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1556
Total AfriNIC prefixes after maximum aggregation: 761
Prefixes being announced from the AfriNIC address blocks: 944
Unique aggregates announced from the AfriNIC address blocks: 750
AfriNIC Region origin ASes present in the Internet Routing Table: 123
AfriNIC Region origin ASes announcing only one prefix: 34
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 2225152
Equivalent to 0 /8s, 33 /16s and 244 /24s
Percentage of available AfriNIC address space announced: 6.6
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 898 5035 183 CHINANET-BACKBONE
1221 771 1192 548 Telstra Pty Ltd
9583 732 53 75 Sify Limited
4755 587 244 124 Videsh Sanchar Nigam Ltd. Aut
4766 586 3413 277 Korea Telecom (KIX)
7545 494 86 72 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 361 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
17557 331 23 152 Pakistan Telecom
10036 313 28 284 C&M Communication Co. Ltd.
4808 309 251 169 CNCGROUP IP network: China169
7474 299 268 208 SingTel Optus Pty Ltd
9498 294 83 59 BHARTI BT INTERNET LTD.
4802 279 47 164 Wantree Development
2764 258 238 197 AAPT Limited
703 257 279 212 UUNET - Commercial IP service
17974 244 65 14 PT TELEKOMUNIKASI INDONESIA
9800 242 386 69 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1488 6500 955 AT&T WorldNet Services
174 1182 5611 1011 Cogent Communications
721 1114 21747 312 DLA Systems Automation Center
4323 1112 665 225 Time Warner Telecom
701 1007 8250 856 UUNET Technologies, Inc.
1239 902 2873 657 Sprint
6197 899 368 452 BellSouth Network Solutions,
2386 847 532 628 AT&T Data Communications Serv
18566 801 224 7 Covad Communications
209 652 3456 493 Qwest
20115 595 505 308 Charter Communications
3356 587 10836 441 Level 3 Communications, LLC
3561 542 2357 415 Savvis
27364 539 43 18 Armstrong Cable Services
852 531 1095 392 Telus Advanced Communications
3602 506 122 94 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 482 1188 21 Cox Communications, Inc.
6198 470 542 202 BellSouth Network Solutions,
7132 443 8782 380 SBC Internet Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 2002 485 UUNET - Commercial IP service
3320 302 2993 236 Deutsche Telekom AG
3301 296 1116 286 TeliaNet Sweden
8220 274 469 268 COLT Telecommunications
680 251 2041 238 DFN-IP service G-WiN
3246 232 491 227 Song Networks
8708 228 251 209 Romania Data Systems S.A.
1257 199 727 175 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 167 1472 73 TELECOM ITALIA
6746 164 47 143 Dynamic Network Technologies,
8866 162 21 12 Bulgarian Telecommunication C
719 159 340 101 LANLINK autonomous system
3300 151 184 84 AUCS Communications Services
5400 144 284 128 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
2856 129 2305 116 BTnet UK Regional network
9051 128 8 34 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 374 598 148 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 224 99 54 Servicios Alestra S.A de C.V
6147 197 102 20 Telefonica Del Peru
11664 155 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 135 8 4 Telefonica del Sur S.A.
6505 130 90 87 Global One Communicaoes Ltda
22047 124 96 6 VTR PUNTO NET S.A.
13999 112 52 9 Mega Cable S.A. de C.V.
11556 110 55 6 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 102 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 99 6 16 Telconet
19632 93 14 5 Metropolis Intercom S.A.
21826 90 12 18 INTERCABLE
23216 90 24 23 RAMtelecom Telecomunicaciones
5639 86 12 9 Telecommunications Services o
11311 85 8 21 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 270 637 225 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 75 267 69 The Internetworking Company o
8452 64 20 5 TEDATA
24835 60 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 41 6 3 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 25 1 4 AUCEGYPT Autonomous System
15475 24 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
33765 19 3 8 TANZANIA TELECOMMUNICATIONS C
7460 18 3 5 LIA Internet Access
2609 17 26 3 Tunisia BackBone AS
12258 17 3 11 Vodacom Internet Company
21280 17 2 3 Swift Global Kenya Ltd.Is an
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65530 *
4323 1112 887 Time Warner Telecom
721 1114 802 DLA Systems Automation Center
18566 801 794 Covad Communications
4134 898 715 CHINANET-BACKBONE
9583 732 657 Sify Limited
27364 539 521 Armstrong Cable Services
4755 587 463 Videsh Sanchar Nigam Ltd. Aut
5668 487 462 CenturyTel Internet Holdings,
22773 482 461 Cox Communications, Inc.
6197 899 447 BellSouth Network Solutions,
7545 494 422 TPG Internet Pty Ltd
3602 506 412 Sprint Canada, Inc.
6467 428 393 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 400 328 ImpSat
9929 361 315 China Netcom Corp.
7725 329 314 MediaOne
4766 586 309 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65004 PRIVATE 200.0.113.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.0.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.1.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.2.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.3.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.4.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.5.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.6.0/24 28477 Universidad Autonoma
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
65529 PRIVATE 216.21.199.0/24 14697 VDot.Net
65529 PRIVATE 216.152.237.0/24 14697 VDot.Net
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
158.0.0.0/13 721 DLA Systems Automation Center
172.32.0.0/24 7011 Citizens Utilities
172.122.28.0/24 210 Utah Education Network
192.43.230.0/24 7575 Australian Academic and Rease
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T WorldNet Services
192.172.0.0/19 721 DLA Systems Automation Center
192.200.100.0/24 7018 AT&T WorldNet Services
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:3 /10:8 /11:15 /12:68
/13:154 /14:308 /15:584 /16:8370 /17:2533 /18:4366
/19:10254 /20:11076 /21:8958 /22:12331 /23:13308 /24:87907
/25:272 /26:250 /27:138 /28:76 /29:38 /30:70
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 785 801 Covad Communications
6197 740 899 BellSouth Network Solutions,
7018 675 1488 AT&T WorldNet Services
2386 601 847 AT&T Data Communications Serv
9583 548 732 Sify Limited
27364 528 539 Armstrong Cable Services
4323 521 1112 Time Warner Telecom
5668 404 487 CenturyTel Internet Holdings,
4766 403 586 Korea Telecom (KIX)
1239 380 902 Sprint
702 365 593 UUNET - Commercial IP service
6198 340 470 BellSouth Network Solutions,
10036 313 313 C&M Communication Co. Ltd.
6467 308 428 E.Spire Communications, Inc.
7725 302 329 MediaOne
7011 297 347 Citizens Utilities
6517 295 318 Yipes Communications, Inc.
9929 282 361 China Netcom Corp.
11456 276 318 Carolina Online, Inc.
15270 258 278 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1528 13:1 15:9 16:2
17:3 18:4 20:4 24:1013 30:2 32:69
33:4 38:111 40:53 44:3 47:2 52:4
55:2 56:3 57:23 58:42 59:28 60:22
61:786 62:598 63:1875 64:2699 65:2066 66:2793
67:566 68:522 69:998 70:97 71:6 72:170
80:559 81:547 82:393 83:251 84:165 85:187
86:6 128:145 129:158 130:85 131:279 132:32
133:1 134:148 135:35 136:190 137:65 138:172
139:55 140:191 141:106 142:142 143:133 144:167
145:33 146:268 147:106 148:294 149:169 150:97
151:65 152:107 153:86 154:5 155:143 156:77
157:92 158:165 159:174 160:77 161:61 162:202
163:84 164:207 165:175 166:155 167:231 168:418
169:140 170:312 171:8 172:2 192:5703 193:3177
194:2342 195:1543 196:652 198:3937 199:3282 200:3918
201:123 202:5574 203:6146 204:3820 205:2020 206:2457
207:2753 208:2049 209:3229 210:1685 211:820 212:1194
213:1284 214:275 215:29 216:3492 217:1141 218:192
219:106 220:377 221:207 222:91
End of report
