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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 11 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 161922
Prefixes after maximum aggregation: 94086
Unique aggregates announced to Internet: 78104
Total ASes present in the Internet Routing Table: 19623
Origin-only ASes present in the Internet Routing Table: 17071
Origin ASes announcing only one prefix: 8007
Transit ASes present in the Internet Routing Table: 2552
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
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: 33
Number of addresses announced to Internet: 1407777216
Equivalent to 83 /8s, 232 /16s and 249 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 75934
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33141
Total APNIC prefixes after maximum aggregation: 15563
Prefixes being announced from the APNIC address blocks: 31069
Unique aggregates announced from the APNIC address blocks: 15772
APNIC Region origin ASes present in the Internet Routing Table: 2261
APNIC Region origin ASes announcing only one prefix: 661
APNIC Region transit ASes present in the Internet Routing Table: 340
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 182860800
Equivalent to 10 /8s, 230 /16s and 60 /24s
Percentage of available APNIC address space announced: 67.9
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: 87744
Total ARIN prefixes after maximum aggregation: 53499
Prefixes being announced from the ARIN address blocks: 68497
Unique aggregates announced from the ARIN address blocks: 25149
ARIN Region origin ASes present in the Internet Routing Table: 9917
ARIN Region origin ASes announcing only one prefix: 3611
ARIN Region transit ASes present in the Internet Routing Table: 939
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 247923456
Equivalent to 14 /8s, 199 /16s and 3 /24s
Percentage of available ARIN address space announced: 70.4
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: 30770
Total RIPE prefixes after maximum aggregation: 21236
Prefixes being announced from the RIPE address blocks: 27805
Unique aggregates announced from the RIPE address blocks: 18538
RIPE Region origin ASes present in the Internet Routing Table: 6639
RIPE Region origin ASes announcing only one prefix: 3505
RIPE Region transit ASes present in the Internet Routing Table: 1113
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 204740032
Equivalent to 12 /8s, 52 /16s and 21 /24s
Percentage of available RIPE address space announced: 71.8
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: 8671
Total LACNIC prefixes after maximum aggregation: 3023
Prefixes being announced from the LACNIC address blocks: 7084
Unique aggregates announced from the LACNIC address blocks: 4089
LACNIC Region origin ASes present in the Internet Routing Table: 616
LACNIC Region origin ASes announcing only one prefix: 195
LACNIC Region transit ASes present in the Internet Routing Table: 115
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18675200
Equivalent to 1 /8s, 28 /16s and 246 /24s
Percentage of available LACNIC address space announced: 55.7
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: 1578
Total AfriNIC prefixes after maximum aggregation: 765
Prefixes being announced from the AfriNIC address blocks: 961
Unique aggregates announced from the AfriNIC address blocks: 769
AfriNIC Region origin ASes present in the Internet Routing Table: 123
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 2276864
Equivalent to 0 /8s, 34 /16s and 190 /24s
Percentage of available AfriNIC address space announced: 6.8
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 908 5139 186 CHINANET-BACKBONE
1221 773 1188 552 Telstra Pty Ltd
9583 733 54 77 Sify Limited
4755 591 244 123 Videsh Sanchar Nigam Ltd. Aut
4766 588 3412 277 Korea Telecom (KIX)
7545 495 86 72 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 360 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
10036 315 29 286 C&M Communication Co. Ltd.
17557 315 22 151 Pakistan Telecom
4808 309 251 169 CNCGROUP IP network: China169
7474 301 268 210 SingTel Optus Pty Ltd
9498 296 83 59 BHARTI BT INTERNET LTD.
4802 280 47 165 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 257 279 212 UUNET - Commercial IP service
2764 252 238 197 AAPT Limited
18302 240 74 136 SK Global co., Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1477 6500 949 AT&T WorldNet Services
174 1180 5612 1011 Cogent Communications
721 1116 21763 313 DLA Systems Automation Center
4323 1103 664 220 Time Warner Telecom
701 1003 8234 853 UUNET Technologies, Inc.
6197 905 386 456 BellSouth Network Solutions,
1239 900 2869 651 Sprint
2386 853 533 633 AT&T Data Communications Serv
18566 806 224 7 Covad Communications
209 653 3520 493 Qwest
20115 593 502 313 Charter Communications
3356 581 10834 438 Level 3 Communications, LLC
27364 539 43 18 Armstrong Cable Services
3561 535 2400 418 Savvis
852 531 1095 391 Telus Advanced Communications
3602 509 122 96 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 483 1188 21 Cox Communications, Inc.
6198 464 382 219 BellSouth Network Solutions,
7725 447 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 594 2003 486 UUNET - Commercial IP service
3320 304 3249 238 Deutsche Telekom AG
3301 291 1084 281 TeliaNet Sweden
8220 272 453 266 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 232 491 227 Song Networks
8708 227 252 211 Romania Data Systems S.A.
1257 199 727 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 165 47 144 Dynamic Network Technologies,
3269 164 1488 69 TELECOM ITALIA
8866 163 21 12 Bulgarian Telecommunication C
719 159 340 101 LANLINK autonomous system
3300 154 184 87 AUCS Communications Services
5400 145 284 129 BT Ignite European Backbone
25186 138 137 98 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
2856 128 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 372 597 146 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 225 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.
22047 132 96 6 VTR PUNTO NET S.A.
6505 130 90 87 Global One Communicaoes Ltda
19632 124 14 5 Metropolis Intercom S.A.
13999 112 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 102 146 73 AVANTEL, S.A.
19169 99 6 16 Telconet
21826 92 12 18 INTERCABLE
22927 92 65 22 TELEFONICA DE ARGENTINA
11311 89 8 18 Sinectis S.A.
23216 89 24 23 RAMtelecom Telecomunicaciones
5639 88 12 9 Telecommunications Services o
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
20928 93 16 2 Noor Advanced Technologies AS
2018 90 295 86 Tertiary Education Network
2905 75 267 69 The Internetworking Company o
8452 65 28 6 TEDATA
24835 64 34 6 RAYA Telecom - Egypt
9129 43 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
15706 31 8 3 Sudatel Internet Exchange Aut
2609 26 26 3 Tunisia BackBone AS
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 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1103 883 Time Warner Telecom
721 1116 803 DLA Systems Automation Center
18566 806 799 Covad Communications
4134 908 722 CHINANET-BACKBONE
9583 733 656 Sify Limited
27364 539 521 Armstrong Cable Services
4755 591 468 Videsh Sanchar Nigam Ltd. Aut
5668 487 462 CenturyTel Internet Holdings,
22773 483 462 Cox Communications, Inc.
6197 905 449 BellSouth Network Solutions,
7725 447 432 MediaOne
7545 495 423 TPG Internet Pty Ltd
3602 509 413 Sprint Canada, Inc.
6467 422 387 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 400 327 ImpSat
9929 360 314 China Netcom Corp.
4766 588 311 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
6478 415 289 AT&T Worldnet Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
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
172.1.0.0/16 12956 Telefonica Data Autonomous Sy
172.2.0.0/16 12956 Telefonica Data Autonomous Sy
172.3.0.0/16 12956 Telefonica Data Autonomous Sy
172.4.0.0/16 12956 Telefonica Data Autonomous Sy
172.5.0.0/16 12956 Telefonica Data Autonomous Sy
172.6.0.0/16 12956 Telefonica Data Autonomous Sy
172.7.0.0/16 12956 Telefonica Data Autonomous Sy
172.8.0.0/16 12956 Telefonica Data Autonomous Sy
172.9.0.0/16 12956 Telefonica Data Autonomous Sy
172.10.0.0/16 12956 Telefonica Data Autonomous Sy
172.11.0.0/16 12956 Telefonica Data Autonomous Sy
172.12.0.0/16 12956 Telefonica Data Autonomous Sy
172.13.0.0/16 12956 Telefonica Data Autonomous Sy
172.14.0.0/16 12956 Telefonica Data Autonomous Sy
172.15.0.0/16 12956 Telefonica Data Autonomous Sy
172.32.0.0/24 7011 Citizens Utilities
172.50.0.0/16 12956 Telefonica Data Autonomous Sy
172.51.0.0/16 12956 Telefonica Data Autonomous Sy
172.52.0.0/16 12956 Telefonica Data Autonomous Sy
172.74.0.0/16 12956 Telefonica Data Autonomous Sy
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 /12:70
/13:155 /14:306 /15:584 /16:8405 /17:2546 /18:4376
/19:10309 /20:11105 /21:8982 /22:12428 /23:13407 /24:88332
/25:280 /26:243 /27:139 /28:76 /29:36 /30:69
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 790 806 Covad Communications
6197 744 905 BellSouth Network Solutions,
7018 675 1477 AT&T WorldNet Services
2386 603 853 AT&T Data Communications Serv
9583 549 733 Sify Limited
27364 528 539 Armstrong Cable Services
4323 519 1103 Time Warner Telecom
7725 420 447 MediaOne
4766 405 588 Korea Telecom (KIX)
5668 405 487 CenturyTel Internet Holdings,
1239 378 900 Sprint
702 366 594 UUNET - Commercial IP service
6198 341 464 BellSouth Network Solutions,
10036 315 315 C&M Communication Co. Ltd.
6467 300 422 E.Spire Communications, Inc.
6517 298 321 Yipes Communications, Inc.
7011 298 348 Citizens Utilities
9929 281 360 China Netcom Corp.
11456 278 320 Carolina Online, Inc.
15270 259 279 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:13 12:1533 13:1 15:9 16:2
17:3 18:4 20:4 24:1091 30:2 32:69
33:4 38:112 40:53 44:3 47:2 52:4
55:2 56:3 57:23 58:43 59:30 60:33
61:791 62:607 63:1874 64:2695 65:2067 66:2838
67:577 68:529 69:1007 70:102 71:17 72:176
80:577 81:548 82:399 83:261 84:177 85:192
86:7 128:149 129:160 130:85 131:280 132:34
133:1 134:148 135:40 136:191 137:65 138:171
139:57 140:191 141:105 142:153 143:142 144:180
145:33 146:281 147:105 148:293 149:169 150:97
151:65 152:106 153:86 154:5 155:144 156:78
157:92 158:161 159:174 160:77 161:64 162:203
163:79 164:206 165:174 166:154 167:233 168:423
169:140 170:315 171:8 172:2 192:5700 193:3197
194:2356 195:1555 196:647 198:3933 199:3275 200:3954
201:126 202:5603 203:6162 204:3819 205:2014 206:2476
207:2757 208:2058 209:3282 210:1688 211:825 212:1144
213:1280 214:265 215:34 216:3451 217:1133 218:198
219:106 220:372 221:212 222:103
End of report
