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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 21 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 166877
Prefixes after maximum aggregation: 96353
Unique aggregates announced to Internet: 80780
Total ASes present in the Internet Routing Table: 20113
Origin-only ASes present in the Internet Routing Table: 17515
Origin ASes announcing only one prefix: 8255
Transit ASes present in the Internet Routing Table: 2598
Transit-only ASes present in the Internet Routing Table: 76
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: 16
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1395915968
Equivalent to 83 /8s, 51 /16s and 252 /24s
Percentage of available address space announced: 37.7
Percentage of allocated address space announced: 56.7
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79189
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34600
Total APNIC prefixes after maximum aggregation: 15952
Prefixes being announced from the APNIC address blocks: 32489
Unique aggregates announced from the APNIC address blocks: 16339
APNIC Region origin ASes present in the Internet Routing Table: 2306
APNIC Region origin ASes announcing only one prefix: 674
APNIC Region transit ASes present in the Internet Routing Table: 349
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 191165568
Equivalent to 11 /8s, 100 /16s and 244 /24s
Percentage of available APNIC address space announced: 70.9
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: 89462
Total ARIN prefixes after maximum aggregation: 54529
Prefixes being announced from the ARIN address blocks: 69904
Unique aggregates announced from the ARIN address blocks: 25839
ARIN Region origin ASes present in the Internet Routing Table: 10088
ARIN Region origin ASes announcing only one prefix: 3716
ARIN Region transit ASes present in the Internet Routing Table: 942
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 253648640
Equivalent to 15 /8s, 30 /16s and 95 /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: 32096
Total RIPE prefixes after maximum aggregation: 21957
Prefixes being announced from the RIPE address blocks: 29094
Unique aggregates announced from the RIPE address blocks: 19541
RIPE Region origin ASes present in the Internet Routing Table: 6892
RIPE Region origin ASes announcing only one prefix: 3635
RIPE Region transit ASes present in the Internet Routing Table: 1140
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212077120
Equivalent to 12 /8s, 164 /16s and 10 /24s
Percentage of available RIPE address space announced: 63.2
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: 9069
Total LACNIC prefixes after maximum aggregation: 3138
Prefixes being announced from the LACNIC address blocks: 7445
Unique aggregates announced from the LACNIC address blocks: 4342
LACNIC Region origin ASes present in the Internet Routing Table: 625
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 118
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20519936
Equivalent to 1 /8s, 57 /16s and 28 /24s
Percentage of available LACNIC address space announced: 30.6
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: 1628
Total AfriNIC prefixes after maximum aggregation: 777
Prefixes being announced from the AfriNIC address blocks: 1023
Unique aggregates announced from the AfriNIC address blocks: 793
AfriNIC Region origin ASes present in the Internet Routing Table: 131
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: 2341376
Equivalent to 0 /8s, 35 /16s and 186 /24s
Percentage of available AfriNIC address space announced: 7.0
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 757 1454 533 Telstra Pty Ltd
9583 753 77 14 Sify Limited
4755 665 248 146 Videsh Sanchar Nigam Ltd. Aut
4766 590 3412 278 Korea Telecom (KIX)
7545 510 106 74 TPG Internet Pty Ltd
17676 463 6707 98 Softbank BB Corp.
9443 375 78 76 Primus Telecommunications
9929 363 223 45 China Netcom Corp.
2907 337 1789 314 SINET Japan
9498 330 83 60 BHARTI BT INTERNET LTD.
7474 312 272 215 SingTel Optus Pty Ltd
17557 306 23 155 Pakistan Telecom
4802 290 50 167 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 270 65 14 PT TELEKOMUNIKASI INDONESIA
17488 264 16 8 Hathway IP Over Cable Interne
9800 250 390 65 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6416 964 AT&T WorldNet Services
4323 1134 664 222 Time Warner Telecom
174 1129 5824 1054 Cogent Communications
721 1086 21779 310 DLA Systems Automation Center
701 1017 8168 860 UUNET Technologies, Inc.
6197 938 522 432 BellSouth Network Solutions,
2386 892 529 659 AT&T Data Communications Serv
1239 884 2875 636 Sprint
18566 830 224 7 Covad Communications
20115 650 499 321 Charter Communications
209 622 3473 491 Qwest
3356 566 10780 434 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 543 123 104 Sprint Canada, Inc.
3561 538 2385 422 Savvis
852 534 1093 388 Telus Advanced Communications
7725 514 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
702 591 1995 482 UUNET - Commercial IP service
3301 300 1081 286 TeliaNet Sweden
3320 293 3232 242 Deutsche Telekom AG
8220 267 473 263 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,
719 168 340 100 LANLINK autonomous system
3269 168 1504 72 TELECOM ITALIA
8866 163 21 11 Bulgarian Telecommunication C
3300 153 184 86 AUCS Communications Services
9121 150 272 36 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 141 145 98 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 379 599 157 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 230 99 58 Servicios Alestra S.A de C.V
6147 192 110 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 116 147 74 AVANTEL, S.A.
19169 114 7 21 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
22927 96 73 25 TELEFONICA DE ARGENTINA
5639 95 12 9 Telecommunications Services o
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 64 28 5 TEDATA
24835 57 34 6 RAYA Telecom - Egypt
20928 56 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
15706 31 8 3 Sudatel Internet Exchange Aut
8524 23 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
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1134 912 Time Warner Telecom
18566 830 823 Covad Communications
721 1086 776 DLA Systems Automation Center
9583 753 739 Sify Limited
4134 925 731 CHINANET-BACKBONE
27364 554 536 Armstrong Cable Services
4755 665 519 Videsh Sanchar Nigam Ltd. Aut
6197 938 506 BellSouth Network Solutions,
7725 514 497 MediaOne
22773 501 478 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 543 439 Sprint Canada, Inc.
7545 510 436 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 379 345 E.Spire Communications, Inc.
20115 650 329 Charter Communications
19262 432 319 Verizon Global Networks
9929 363 318 China Netcom Corp.
4766 590 312 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
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 /14:315 /15:602 /16:8452 /17:2632 /18:4512
/19:10496 /20:11433 /21:9483 /22:12934 /23:13838 /24:90899
/25:350 /26:295 /27:170 /28:51 /29:28 /30:73
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 814 830 Covad Communications
6197 764 938 BellSouth Network Solutions,
7018 700 1491 AT&T WorldNet Services
2386 607 892 AT&T Data Communications Serv
9583 572 753 Sify Limited
27364 545 554 Armstrong Cable Services
4323 538 1134 Time Warner Telecom
7725 484 514 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 402 494 CenturyTel Internet Holdings,
1239 372 884 Sprint
702 364 591 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 290 312 Yipes Communications, Inc.
19916 282 289 OLM LLC
20115 281 650 Charter Communications
9929 276 363 China Netcom Corp.
11456 275 314 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:23 9:1 12:1558 13:1 15:9
16:2 17:3 18:3 20:4 24:1181 30:2
32:69 33:2 38:137 40:54 44:4 47:2
52:4 55:2 56:3 57:23 58:154 59:58
60:65 61:757 62:637 63:1876 64:2790 65:2073
66:2912 67:633 68:552 69:1104 70:146 71:10
72:283 73:5 80:587 81:555 82:434 83:287
84:225 85:287 86:60 87:17 128:180 129:169
130:88 131:292 132:38 133:1 134:142 135:42
136:137 137:74 138:166 139:61 140:302 141:108
142:152 143:139 144:203 145:33 146:290 147:110
148:290 149:174 150:107 151:64 152:108 153:88
154:5 155:141 156:78 157:99 158:160 159:167
160:78 161:61 162:217 163:93 164:191 165:181
166:158 167:245 168:437 169:144 170:319 171:8
172:1 190:1 192:5702 193:3224 194:2424 195:1582
196:676 198:3894 199:3291 200:4054 201:205 202:5880
203:6392 204:3793 205:2031 206:2432 207:2806 208:2046
209:3313 210:1727 211:810 212:1253 213:1335 214:274
215:31 216:3529 217:1141 218:206 219:157 220:393
221:236 222:120
End of report
