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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 07 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 158798
Prefixes after maximum aggregation: 92887
Unique aggregates announced to Internet: 76542
Total ASes present in the Internet Routing Table: 19308
Origin-only ASes present in the Internet Routing Table: 16797
Origin ASes announcing only one prefix: 7816
Transit ASes present in the Internet Routing Table: 2511
Transit-only ASes present in the Internet Routing Table: 67
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: 14
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1378593664
Equivalent to 82 /8s, 43 /16s and 171 /24s
Percentage of available address space announced: 37.2
Percentage of allocated address space announced: 58.4
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 74098
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32140
Total APNIC prefixes after maximum aggregation: 15412
Prefixes being announced from the APNIC address blocks: 30073
Unique aggregates announced from the APNIC address blocks: 15460
APNIC Region origin ASes present in the Internet Routing Table: 2242
APNIC Region origin ASes announcing only one prefix: 651
APNIC Region transit ASes present in the Internet Routing Table: 341
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 180808832
Equivalent to 10 /8s, 198 /16s and 236 /24s
Percentage of available APNIC address space announced: 67.1
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
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: 86557
Total ARIN prefixes after maximum aggregation: 52901
Prefixes being announced from the ARIN address blocks: 67523
Unique aggregates announced from the ARIN address blocks: 24792
ARIN Region origin ASes present in the Internet Routing Table: 9812
ARIN Region origin ASes announcing only one prefix: 3547
ARIN Region transit ASes present in the Internet Routing Table: 924
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 243665408
Equivalent to 14 /8s, 134 /16s and 10 /24s
Percentage of available ARIN address space announced: 69.2
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, 29696-30719, 31744-33791
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: 30137
Total RIPE prefixes after maximum aggregation: 20874
Prefixes being announced from the RIPE address blocks: 27198
Unique aggregates announced from the RIPE address blocks: 18117
RIPE Region origin ASes present in the Internet Routing Table: 6486
RIPE Region origin ASes announcing only one prefix: 3405
RIPE Region transit ASes present in the Internet Routing Table: 1092
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 200210368
Equivalent to 11 /8s, 238 /16s and 247 /24s
Percentage of available RIPE address space announced: 70.2
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, 33792-35839
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: 8519
Total LACNIC prefixes after maximum aggregation: 2996
Prefixes being announced from the LACNIC address blocks: 6901
Unique aggregates announced from the LACNIC address blocks: 4008
LACNIC Region origin ASes present in the Internet Routing Table: 610
LACNIC Region origin ASes announcing only one prefix: 189
LACNIC Region transit ASes present in the Internet Routing Table: 108
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 18011904
Equivalent to 1 /8s, 18 /16s and 215 /24s
Percentage of available LACNIC address space announced: 53.7
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1426
Total AfriNIC prefixes after maximum aggregation: 704
Prefixes being announced from the AfriNIC address blocks: 914
Unique aggregates announced from the AfriNIC address blocks: 730
AfriNIC Region origin ASes present in the Internet Routing Table: 99
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2195200
Equivalent to 0 /8s, 33 /16s and 127 /24s
Percentage of available AfriNIC address space announced: 13.1
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 896 4827 180 CHINANET-BACKBONE
1221 782 1189 555 Telstra Pty Ltd
9583 698 52 44 Sify Limited
4766 586 3415 275 Korea Telecom (KIX)
4755 530 243 115 Videsh Sanchar Nigam Ltd. Aut
17676 427 6460 72 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 358 175 45 China Netcom Corp.
2907 348 1839 322 SINET Japan
17557 336 24 155 Pakistan Telecom
10036 306 28 279 C&M Communication Co. Ltd.
4808 305 250 166 CNCGROUP IP network: China169
7474 295 268 213 SingTel Optus Pty Ltd
4802 282 47 166 Wantree Development
9498 261 82 53 BHARTI BT INTERNET LTD.
7545 260 51 149 TPG Internet Pty Ltd
703 254 279 208 UUNET - Commercial IP service
2764 254 238 202 AAPT Limited
17974 236 63 12 PT TELEKOMUNIKASI INDONESIA
9800 235 386 69 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1471 6530 963 AT&T WorldNet Services
721 1117 21763 314 DLA Systems Automation Center
4323 1089 663 220 Time Warner Telecom
174 1082 5584 920 Cogent Communications
701 1007 8266 858 UUNET Technologies, Inc.
1239 914 2876 662 Sprint
6197 886 384 414 BellSouth Network Solutions,
2386 842 532 624 AT&T Data Communications Serv
18566 788 224 7 Covad Communications
209 643 3474 498 Qwest
20115 598 495 309 Charter Communications
3356 584 10852 433 Level 3 Communications, LLC
3561 540 2368 414 Savvis
852 538 1095 397 Telus Advanced Communications
3602 508 121 93 Sprint Canada, Inc.
27364 491 43 18 Armstrong Cable Services
5668 479 115 25 CenturyTel Internet Holdings,
22773 473 1188 21 Cox Communications, Inc.
6198 459 380 215 BellSouth Network Solutions,
6467 447 143 35 E.Spire Communications, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 601 2003 491 UUNET - Commercial IP service
3320 302 2993 236 Deutsche Telekom AG
3301 298 1117 288 TeliaNet Sweden
8220 277 468 270 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 232 476 226 Song Networks
8708 226 251 207 Romania Data Systems S.A.
1257 200 696 176 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
8866 166 21 12 Bulgarian Telecommunication C
6746 161 47 141 Dynamic Network Technologies,
719 157 322 99 LANLINK autonomous system
3300 152 184 85 AUCS Communications Services
5400 143 281 126 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
9051 128 8 34 INCONET Autonomous System
2856 127 2305 115 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 351 529 145 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 215 99 52 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
19632 190 14 7 Metropolis Intercom S.A.
7303 155 67 28 Telecom Argentina Stet-France
11664 153 19 23 Keytech SA
6505 131 90 88 Global One Communicaoes Ltda
14117 119 8 4 Telefonica del Sur S.A.
22047 111 96 6 VTR PUNTO NET S.A.
6503 106 146 75 AVANTEL, S.A.
18822 103 6 15 TELEFONICA MANQUEHUE
13999 100 52 9 Mega Cable S.A. de C.V.
11556 99 49 5 Cable-Wireless Panama
19169 95 6 16 Telconet
23216 88 24 23 RAMtelecom Telecomunicaciones
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
10481 82 32 7 Prima S.A.
4270 79 18 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 267 635 225 The Internet Solution
5536 117 15 17 Internet Egypt Network
20928 91 16 2 Noor Advanced Technologies AS
2018 90 295 87 Tertiary Education Network
2905 74 266 68 The Internetworking Company o
8452 71 20 5 TEDATA
24835 59 34 6 RAYA Telecom - Egypt
9129 41 3 3 UUNET Kenya
12455 41 7 4 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
15475 20 84 4 Nile Online
10798 19 1 11 Standard Bank of South Africa
7460 18 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
21280 17 2 3 Swift Global Kenya Ltd.Is an
15808 16 1 1 Communication Solutions Ltd i
21491 16 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1089 869 Time Warner Telecom
721 1117 803 DLA Systems Automation Center
18566 788 781 Covad Communications
4134 896 716 CHINANET-BACKBONE
9583 698 654 Sify Limited
27364 491 473 Armstrong Cable Services
6197 886 472 BellSouth Network Solutions,
5668 479 454 CenturyTel Internet Holdings,
22773 473 452 Cox Communications, Inc.
4755 530 415 Videsh Sanchar Nigam Ltd. Aut
3602 508 415 Sprint Canada, Inc.
6467 447 412 E.Spire Communications, Inc.
17676 427 355 Softbank BB Corp.
9929 358 313 China Netcom Corp.
6140 383 312 ImpSat
4766 586 311 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
20115 598 289 Charter Communications
6478 373 285 AT&T Worldnet Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
35864 UNALLOCATED 38.117.202.0/24 174 Cogent Communication
35884 UNALLOCATED 38.118.171.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.164.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.165.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.166.0/24 10912 InterNAP Network Ser
35868 UNALLOCATED 65.88.163.192/26 6395 Broadwing Communicat
35871 UNALLOCATED 66.7.178.0/23 6517 Yipes Communications
35868 UNALLOCATED 68.143.179.64/26 6395 Broadwing Communicat
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
35857 UNALLOCATED 199.107.188.0/24 4323 Time Warner Telecom
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 /8:18 /9:3 /10:8 /11:15 /12:67
/13:151 /14:307 /15:576 /16:8331 /17:2514 /18:4299
/19:10168 /20:10875 /21:8694 /22:11984 /23:13128 /24:86823
/25:281 /26:265 /27:135 /28:62 /29:26 /30:46
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 772 788 Covad Communications
6197 727 886 BellSouth Network Solutions,
7018 652 1471 AT&T WorldNet Services
2386 596 842 AT&T Data Communications Serv
9583 517 698 Sify Limited
4323 505 1089 Time Warner Telecom
27364 477 491 Armstrong Cable Services
4766 402 586 Korea Telecom (KIX)
5668 402 479 CenturyTel Internet Holdings,
1239 381 914 Sprint
702 368 601 UUNET - Commercial IP service
6198 336 459 BellSouth Network Solutions,
6467 325 447 E.Spire Communications, Inc.
10036 306 306 C&M Communication Co. Ltd.
6517 289 312 Yipes Communications, Inc.
9929 282 358 China Netcom Corp.
7011 280 329 Citizens Utilities
11456 264 311 Carolina Online, Inc.
15270 251 270 PaeTec.net -a division of Pae
3320 247 302 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 12:1516 13:1 15:9 16:2
17:3 18:4 20:4 24:779 28:2 31:1
32:64 33:3 38:104 40:53 44:7 47:2
52:3 55:2 56:3 57:23 58:38 59:20
60:25 61:738 62:572 63:1878 64:2637 65:2076
66:2739 67:519 68:508 69:960 70:79 71:6
72:125 80:540 81:530 82:371 83:253 84:141
85:165 128:140 129:159 130:89 131:281 132:34
133:1 134:145 135:41 136:191 137:67 138:160
139:55 140:193 141:106 142:137 143:130 144:173
145:32 146:281 147:102 148:293 149:169 150:97
151:63 152:107 153:87 154:4 155:141 156:69
157:88 158:167 159:172 160:73 161:60 162:201
163:83 164:205 165:159 166:153 167:230 168:416
169:137 170:312 171:8 172:2 192:5674 193:3104
194:2318 195:1543 196:638 198:3940 199:3276 200:3986
201:79 202:5356 203:6049 204:3809 205:2015 206:2448
207:2728 208:2080 209:3280 210:1686 211:832 212:1186
213:1275 214:244 215:31 216:3684 217:1158 218:185
219:102 220:362 221:156 222:74
End of report
