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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 06 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 158926
Prefixes after maximum aggregation: 92690
Unique aggregates announced to Internet: 76522
Total ASes present in the Internet Routing Table: 19288
Origin-only ASes present in the Internet Routing Table: 16794
Origin ASes announcing only one prefix: 7812
Transit ASes present in the Internet Routing Table: 2494
Transit-only ASes present in the Internet Routing Table: 65
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: 25
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1395436164
Equivalent to 83 /8s, 44 /16s and 170 /24s
Percentage of available address space announced: 37.6
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 74148
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32322
Total APNIC prefixes after maximum aggregation: 15329
Prefixes being announced from the APNIC address blocks: 30261
Unique aggregates announced from the APNIC address blocks: 15375
APNIC Region origin ASes present in the Internet Routing Table: 2237
APNIC Region origin ASes announcing only one prefix: 650
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: 15
Number of APNIC addresses announced to Internet: 180937344
Equivalent to 10 /8s, 200 /16s and 226 /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: 86520
Total ARIN prefixes after maximum aggregation: 52806
Prefixes being announced from the ARIN address blocks: 67518
Unique aggregates announced from the ARIN address blocks: 24777
ARIN Region origin ASes present in the Internet Routing Table: 9804
ARIN Region origin ASes announcing only one prefix: 3545
ARIN Region transit ASes present in the Internet Routing Table: 920
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 19
Number of ARIN addresses announced to Internet: 243560704
Equivalent to 14 /8s, 132 /16s and 113 /24s
Percentage of available ARIN address space announced: 69.1
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: 30117
Total RIPE prefixes after maximum aggregation: 20858
Prefixes being announced from the RIPE address blocks: 27186
Unique aggregates announced from the RIPE address blocks: 18098
RIPE Region origin ASes present in the Internet Routing Table: 6482
RIPE Region origin ASes announcing only one prefix: 3403
RIPE Region transit ASes present in the Internet Routing Table: 1080
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 200108740
Equivalent to 11 /8s, 237 /16s and 106 /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: 8515
Total LACNIC prefixes after maximum aggregation: 2995
Prefixes being announced from the LACNIC address blocks: 6901
Unique aggregates announced from the LACNIC address blocks: 4006
LACNIC Region origin ASes present in the Internet Routing Table: 610
LACNIC Region origin ASes announcing only one prefix: 190
LACNIC Region transit ASes present in the Internet Routing Table: 109
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 18005760
Equivalent to 1 /8s, 18 /16s and 191 /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: 1422
Total AfriNIC prefixes after maximum aggregation: 702
Prefixes being announced from the AfriNIC address blocks: 906
Unique aggregates announced from the AfriNIC address blocks: 726
AfriNIC Region origin ASes present in the Internet Routing Table: 98
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2190336
Equivalent to 0 /8s, 33 /16s and 108 /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 897 4843 180 CHINANET-BACKBONE
1221 783 1189 556 Telstra Pty Ltd
9583 697 52 43 Sify Limited
4766 586 3415 275 Korea Telecom (KIX)
4755 527 242 114 Videsh Sanchar Nigam Ltd. Aut
7545 471 86 68 TPG Internet Pty Ltd
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 335 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 47 167 Wantree Development
9498 262 82 53 BHARTI BT INTERNET LTD.
703 254 279 208 UUNET - Commercial IP service
2764 253 238 202 AAPT Limited
17974 238 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 964 AT&T WorldNet Services
721 1120 21763 314 DLA Systems Automation Center
4323 1090 663 222 Time Warner Telecom
174 1038 5580 880 Cogent Communications
701 1010 8282 861 UUNET Technologies, Inc.
1239 902 2867 654 Sprint
6197 886 384 414 BellSouth Network Solutions,
2386 843 532 625 AT&T Data Communications Serv
18566 787 209 7 Covad Communications
209 647 3475 502 Qwest
20115 599 495 310 Charter Communications
3356 580 10851 430 Level 3 Communications, LLC
852 538 1095 397 Telus Advanced Communications
3561 538 2368 413 Savvis
3602 508 121 93 Sprint Canada, Inc.
5668 478 115 25 CenturyTel Internet Holdings,
22773 476 1188 21 Cox Communications, Inc.
6198 468 541 199 BellSouth Network Solutions,
27364 466 43 18 Armstrong Cable Services
6467 447 143 35 E.Spire Communications, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 600 2003 490 UUNET - Commercial IP service
3320 303 2993 237 Deutsche Telekom AG
3301 297 1117 287 TeliaNet Sweden
8220 276 468 270 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 232 476 226 Song Networks
8708 228 251 207 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 162 47 142 Dynamic Network Technologies,
719 156 322 98 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 126 2304 113 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 87 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 86 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 268 635 225 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 66 20 5 TEDATA
24835 55 34 6 RAYA Telecom - Egypt
9129 41 3 3 UUNET Kenya
12455 41 7 4 Jambonet Autonomous system
6713 37 54 9 Itissalat Al-MAGHRIB
5713 35 141 28 Telkom SA Ltd
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 1090 868 Time Warner Telecom
721 1120 806 DLA Systems Automation Center
18566 787 780 Covad Communications
4134 897 717 CHINANET-BACKBONE
9583 697 654 Sify Limited
6197 886 472 BellSouth Network Solutions,
22773 476 455 Cox Communications, Inc.
5668 478 453 CenturyTel Internet Holdings,
27364 466 448 Armstrong Cable Services
3602 508 415 Sprint Canada, Inc.
4755 527 413 Videsh Sanchar Nigam Ltd. Aut
6467 447 412 E.Spire Communications, Inc.
7545 471 403 TPG Internet Pty Ltd
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 599 289 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
35864 UNALLOCATED 38.117.202.0/24 174 Cogent Communication
65535 PRIVATE 64.111.161.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.162.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.163.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.164.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.165.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.166.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.167.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.168.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.169.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.170.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.171.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.172.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.173.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.174.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.175.0/24 33205 KMC Telecom Solution
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 /8:19 /9:3 /10:8 /11:15 /12:67
/13:151 /14:307 /15:577 /16:8334 /17:2509 /18:4297
/19:10160 /20:10879 /21:8711 /22:12025 /23:13148 /24:86822
/25:281 /26:264 /27:134 /28:61 /29:23 /30:88
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 772 787 Covad Communications
6197 727 886 BellSouth Network Solutions,
7018 651 1471 AT&T WorldNet Services
2386 596 843 AT&T Data Communications Serv
9583 516 697 Sify Limited
4323 504 1090 Time Warner Telecom
27364 451 466 Armstrong Cable Services
4766 402 586 Korea Telecom (KIX)
5668 402 478 CenturyTel Internet Holdings,
1239 374 902 Sprint
702 367 600 UUNET - Commercial IP service
6198 337 468 BellSouth Network Solutions,
6467 325 447 E.Spire Communications, Inc.
10036 306 306 C&M Communication Co. Ltd.
6517 290 313 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 248 303 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 12:1515 13:1 15:9 16:2
17:3 18:4 20:4 24:748 28:2 31:1
32:64 33:3 38:103 40:54 44:3 47:2
52:3 55:2 56:3 57:23 58:38 59:19
60:25 61:738 62:558 63:1873 64:2651 65:2081
66:2737 67:515 68:508 69:960 70:79 71:6
72:125 80:540 81:523 82:372 83:258 84:143
85:164 128:138 129:158 130:89 131:280 132:34
133:1 134:144 135:41 136:191 137:67 138:160
139:54 140:193 141:106 142:137 143:130 144:173
145:32 146:282 147:100 148:293 149:169 150:97
151:63 152:107 153:87 154:4 155:141 156:69
157:87 158:167 159:172 160:72 161:60 162:201
163:83 164:205 165:159 166:153 167:230 168:415
169:137 170:312 171:8 172:2 192:5661 193:3127
194:2316 195:1541 196:631 198:3933 199:3278 200:3987
201:79 202:5359 203:6138 204:3796 205:2009 206:2439
207:2724 208:2071 209:3276 210:1686 211:830 212:1192
213:1274 214:244 215:31 216:3682 217:1154 218:186
219:102 220:370 221:155 222:75
End of report
