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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 20 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 166734
Prefixes after maximum aggregation: 96343
Unique aggregates announced to Internet: 80771
Total ASes present in the Internet Routing Table: 20112
Origin-only ASes present in the Internet Routing Table: 17520
Origin ASes announcing only one prefix: 8244
Transit ASes present in the Internet Routing Table: 2592
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 17
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1395354336
Equivalent to 83 /8s, 43 /16s and 106 /24s
Percentage of available address space announced: 37.6
Percentage of allocated address space announced: 56.7
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79119
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34583
Total APNIC prefixes after maximum aggregation: 15983
Prefixes being announced from the APNIC address blocks: 32443
Unique aggregates announced from the APNIC address blocks: 16371
APNIC Region origin ASes present in the Internet Routing Table: 2309
APNIC Region origin ASes announcing only one prefix: 670
APNIC Region transit ASes present in the Internet Routing Table: 353
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 190791552
Equivalent to 11 /8s, 95 /16s and 63 /24s
Percentage of available APNIC address space announced: 70.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
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: 89403
Total ARIN prefixes after maximum aggregation: 54512
Prefixes being announced from the ARIN address blocks: 69847
Unique aggregates announced from the ARIN address blocks: 25823
ARIN Region origin ASes present in the Internet Routing Table: 10094
ARIN Region origin ASes announcing only one prefix: 3721
ARIN Region transit ASes present in the Internet Routing Table: 938
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 253472256
Equivalent to 15 /8s, 27 /16s and 174 /24s
Percentage of available ARIN address space announced: 63.0
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, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 32030
Total RIPE prefixes after maximum aggregation: 21911
Prefixes being announced from the RIPE address blocks: 29011
Unique aggregates announced from the RIPE address blocks: 19503
RIPE Region origin ASes present in the Internet Routing Table: 6880
RIPE Region origin ASes announcing only one prefix: 3626
RIPE Region transit ASes present in the Internet Routing Table: 1135
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 211843648
Equivalent to 12 /8s, 160 /16s and 122 /24s
Percentage of available RIPE address space announced: 63.1
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, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9101
Total LACNIC prefixes after maximum aggregation: 3163
Prefixes being announced from the LACNIC address blocks: 7463
Unique aggregates announced from the LACNIC address blocks: 4339
LACNIC Region origin ASes present in the Internet Routing Table: 626
LACNIC Region origin ASes announcing only one prefix: 190
LACNIC Region transit ASes present in the Internet Routing Table: 118
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20448032
Equivalent to 1 /8s, 56 /16s and 3 /24s
Percentage of available LACNIC address space announced: 30.5
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1594
Total AfriNIC prefixes after maximum aggregation: 774
Prefixes being announced from the AfriNIC address blocks: 1006
Unique aggregates announced from the AfriNIC address blocks: 776
AfriNIC Region origin ASes present in the Internet Routing Table: 130
AfriNIC Region origin ASes announcing only one prefix: 37
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2316800
Equivalent to 0 /8s, 35 /16s and 90 /24s
Percentage of available AfriNIC address space announced: 6.9
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 925 5566 194 CHINANET-BACKBONE
1221 758 1454 534 Telstra Pty Ltd
9583 754 77 14 Sify Limited
4755 659 248 144 Videsh Sanchar Nigam Ltd. Aut
4766 591 3413 279 Korea Telecom (KIX)
7545 510 106 74 TPG Internet Pty Ltd
17676 437 6590 76 Softbank BB Corp.
9443 375 78 76 Primus Telecommunications
9929 363 223 45 China Netcom Corp.
2907 337 1789 314 SINET Japan
9498 327 83 61 BHARTI BT INTERNET LTD.
7474 308 272 213 SingTel Optus Pty Ltd
17557 306 23 155 Pakistan Telecom
4802 289 50 166 Wantree Development
4808 283 244 166 CNCGROUP IP network: China169
18302 280 109 154 SK Global co., Ltd
9837 279 80 183 Powertel Ltd
17974 267 65 14 PT TELEKOMUNIKASI INDONESIA
17488 262 16 8 Hathway IP Over Cable Interne
703 252 261 207 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1502 6417 974 AT&T WorldNet Services
4323 1132 664 221 Time Warner Telecom
174 1124 5806 1049 Cogent Communications
721 1086 21779 310 DLA Systems Automation Center
701 1015 8168 858 UUNET Technologies, Inc.
6197 939 522 433 BellSouth Network Solutions,
2386 892 529 659 AT&T Data Communications Serv
1239 886 2876 638 Sprint
18566 830 224 7 Covad Communications
20115 649 498 320 Charter Communications
209 626 3507 496 Qwest
3356 566 10780 434 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
852 542 1094 388 Telus Advanced Communications
3602 542 123 104 Sprint Canada, Inc.
3561 535 2385 422 Savvis
7725 505 64 17 MediaOne
22773 501 1188 23 Cox Communications, Inc.
5668 494 114 22 CenturyTel Internet Holdings,
6198 467 396 224 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 589 1995 480 UUNET - Commercial IP service
3301 300 1081 286 TeliaNet Sweden
3320 293 3232 242 Deutsche Telekom AG
8220 266 472 262 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 224 253 210 Romania Data Systems S.A.
1257 194 712 172 SWIPnet Swedish IP Network
5515 180 778 127 Sonera Solution Autonomous Sy
786 175 1794 175 The JANET IP Service
5400 173 286 146 BT Ignite European Backbone
6746 172 49 150 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 163 21 11 Bulgarian Telecommunication C
3300 153 184 86 AUCS Communications Services
9121 150 272 35 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 142 145 99 France Telecom Transpac's Tra
8551 134 116 19 Bezeq International
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 381 599 159 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 230 99 59 Servicios Alestra S.A de C.V
6147 193 110 21 Telefonica Del Peru
11664 181 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 150 69 18 Telecom Argentina Stet-France
19632 142 14 5 Metropolis Intercom S.A.
22047 132 112 7 VTR PUNTO NET S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
6503 115 147 73 AVANTEL, S.A.
19169 115 7 22 Telconet
13999 111 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
10481 101 40 7 Prima S.A.
23216 98 24 23 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
21826 95 13 20 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 621 222 The Internet Solution
5536 120 15 17 Internet Egypt Network
2018 95 295 86 Tertiary Education Network
2905 75 266 67 The Internetworking Company o
8452 63 28 5 TEDATA
24835 57 34 6 RAYA Telecom - Egypt
20928 52 16 2 Noor Advanced Technologies AS
6713 51 54 8 Itissalat Al-MAGHRIB
15475 50 84 4 Nile Online
9129 43 3 3 UUNET Kenya
12455 38 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
8524 25 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
23889 20 5 9 MAURITIUS TELECOM
10798 19 1 11 Standard Bank of South Africa
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
15804 17 2 1 AS of The Way Out Internet So
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1132 911 Time Warner Telecom
18566 830 823 Covad Communications
721 1086 776 DLA Systems Automation Center
9583 754 740 Sify Limited
4134 925 731 CHINANET-BACKBONE
27364 554 536 Armstrong Cable Services
4755 659 515 Videsh Sanchar Nigam Ltd. Aut
6197 939 506 BellSouth Network Solutions,
7725 505 488 MediaOne
22773 501 478 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 542 438 Sprint Canada, Inc.
7545 510 436 TPG Internet Pty Ltd
17676 437 361 Softbank BB Corp.
6467 379 345 E.Spire Communications, Inc.
20115 649 329 Charter Communications
19262 432 319 Verizon Global Networks
9929 363 318 China Netcom Corp.
4766 591 312 Korea Telecom (KIX)
9443 375 299 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
65507 PRIVATE 200.0.64.0/24 27750 Cooperación Latino A
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
65142 PRIVATE 200.32.76.0/24 6140 ImpSat
65142 PRIVATE 200.32.77.0/24 6140 ImpSat
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.58.0/23 11664 Keytech SA
64512 PRIVATE 200.80.148.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
50.160.0.0/13 1221 Telstra Pty Ltd
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
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
192.169.0.0/23 3970 RGnet, Inc.
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 /8:17 /9:3 /10:8 /11:15 /12:75
/13:163 /14:313 /15:601 /16:8450 /17:2629 /18:4510
/19:10498 /20:11426 /21:9480 /22:12916 /23:13836 /24:90766
/25:351 /26:297 /27:181 /28:59 /29:29 /30:78
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 814 830 Covad Communications
6197 765 939 BellSouth Network Solutions,
7018 710 1502 AT&T WorldNet Services
2386 607 892 AT&T Data Communications Serv
9583 573 754 Sify Limited
27364 545 554 Armstrong Cable Services
4323 536 1132 Time Warner Telecom
7725 475 505 MediaOne
4766 409 591 Korea Telecom (KIX)
5668 402 494 CenturyTel Internet Holdings,
1239 372 886 Sprint
702 363 589 UUNET - Commercial IP service
6198 342 467 BellSouth Network Solutions,
7011 324 375 Citizens Utilities
15270 296 321 PaeTec.net -a division of Pae
6517 291 313 Yipes Communications, Inc.
20115 281 649 Charter Communications
9929 276 363 China Netcom Corp.
11456 275 314 Carolina Online, Inc.
19916 269 276 OLM LLC
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:23 9:1 12:1555 13:1 15:9
16:2 17:3 18:3 20:4 24:1179 30:2
32:69 33:3 38:137 40:54 44:4 47:2
52:4 55:2 56:3 57:23 58:150 59:52
60:64 61:753 62:637 63:1886 64:2789 65:2072
66:2912 67:625 68:552 69:1109 70:145 71:10
72:276 80:581 81:553 82:432 83:287 84:224
85:287 86:60 87:17 128:180 129:169 130:88
131:293 132:41 133:1 134:142 135:42 136:137
137:74 138:166 139:61 140:301 141:107 142:152
143:138 144:202 145:33 146:285 147:110 148:297
149:173 150:107 151:63 152:108 153:88 154:5
155:141 156:78 157:99 158:160 159:169 160:78
161:71 162:217 163:92 164:191 165:187 166:158
167:244 168:438 169:145 170:320 171:8 172:1
190:1 192:5707 193:3214 194:2419 195:1575 196:676
198:3896 199:3288 200:4058 201:205 202:5869 203:6384
204:3798 205:2006 206:2431 207:2798 208:2049 209:3303
210:1722 211:807 212:1238 213:1331 214:272 215:31
216:3518 217:1137 218:206 219:157 220:391 221:237
222:120
End of report
