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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 10 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 143442
Prefixes after maximum aggregation: 85388
Unique aggregates announced to Internet: 68996
Total ASes present in the Internet Routing Table: 18136
Origin-only ASes present in the Internet Routing Table: 15746
Origin ASes announcing only one prefix: 7475
Transit ASes present in the Internet Routing Table: 2390
Transit-only ASes present in the Internet Routing Table: 143
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: 41
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1236836224
Equivalent to 73 /8s, 184 /16s and 159 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 52.4
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 64067
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 27899
Total APNIC prefixes after maximum aggregation: 13902
Prefixes being announced from the APNIC address blocks: 25855
Unique aggregates announced from the APNIC address blocks: 13604
APNIC Region origin ASes present in the Internet Routing Table: 2182
APNIC Region origin ASes announcing only one prefix: 673
APNIC Region transit ASes present in the Internet Routing Table: 332
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 101643136
Equivalent to 6 /8s, 14 /16s and 243 /24s
Percentage of available APNIC address space announced: 37.7
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: 79862
Total ARIN prefixes after maximum aggregation: 49389
Prefixes being announced from the ARIN address blocks: 61091
Unique aggregates announced from the ARIN address blocks: 21901
ARIN Region origin ASes present in the Internet Routing Table: 9392
ARIN Region origin ASes announcing only one prefix: 3489
ARIN Region transit ASes present in the Internet Routing Table: 891
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 229107712
Equivalent to 13 /8s, 167 /16s and 232 /24s
Percentage of available ARIN address space announced: 65.0
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
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: 26100
Total RIPE prefixes after maximum aggregation: 18513
Prefixes being announced from the RIPE address blocks: 22725
Unique aggregates announced from the RIPE address blocks: 15188
RIPE Region origin ASes present in the Internet Routing Table: 5737
RIPE Region origin ASes announcing only one prefix: 3096
RIPE Region transit ASes present in the Internet Routing Table: 1004
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 177655232
Equivalent to 10 /8s, 150 /16s and 205 /24s
Percentage of available RIPE address space announced: 62.3
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: 8370
Total LACNIC prefixes after maximum aggregation: 2923
Prefixes being announced from the LACNIC address blocks: 6982
Unique aggregates announced from the LACNIC address blocks: 4017
LACNIC Region origin ASes present in the Internet Routing Table: 608
LACNIC Region origin ASes announcing only one prefix: 188
LACNIC Region transit ASes present in the Internet Routing Table: 111
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 18038016
Equivalent to 1 /8s, 19 /16s and 61 /24s
Percentage of available LACNIC address space announced: 53.8
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1165
Total AfriNIC prefixes after maximum aggregation: 661
Prefixes being announced from the AfriNIC address blocks: 912
Unique aggregates announced from the AfriNIC address blocks: 731
AfriNIC Region origin ASes present in the Internet Routing Table: 91
AfriNIC Region origin ASes announcing only one prefix: 29
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2198016
Equivalent to 0 /8s, 33 /16s and 138 /24s
Percentage of available AfriNIC address space announced: 13.1
AfriNIC AS Blocks ERX transfers
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 781 1193 555 Telstra Pty Ltd
9583 582 44 11 Sify Limited
4755 490 211 113 Videsh Sanchar Nigam Ltd. Aut
4134 431 1943 104 CHINANET-BACKBONE
4766 383 1701 166 Korea Telecom (KIX)
9443 370 77 76 Primus Telecommunications
7545 365 54 66 TPG Internet Pty Ltd
2907 348 1839 322 SINET Japan
17557 337 24 153 Pakistan Telecom
10036 311 28 283 C&M Communication Co. Ltd.
7474 295 268 213 SingTel Optus Pty Ltd
4802 282 47 166 Wantree Development
9498 261 82 53 BHARTI BT INTERNET LTD.
2764 251 238 200 AAPT Limited
703 250 273 207 UUNET - Commercial IP service
9929 246 94 19 China Netcom Corp.
4808 231 168 129 CNCGROUP IP network: China169
18302 217 34 129 SK Global co., Ltd
7563 215 48 158 Korea Internet Infrastructure
17488 212 15 11 Hathway IP Over Cable Interne
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1407 6475 919 AT&T WorldNet Services
174 1065 5544 905 Cogent Communications
721 1017 15618 311 DLA Systems Automation Center
701 967 8224 822 UUNET Technologies, Inc.
4323 962 635 212 Time Warner Telecom
1239 878 2848 632 Sprint
6197 833 365 384 BellSouth Network Solutions,
2386 817 528 616 AT&T Data Communications Serv
18566 788 224 7 Covad Communications
209 622 3372 479 Qwest
20115 599 495 310 Charter Communications
3356 538 10786 408 Level 3 Communications, LLC
852 533 1053 392 Telus Advanced Communications
3561 511 2201 388 Savvis
3602 507 119 92 Sprint Canada, Inc.
27364 504 43 18 Armstrong Cable Services
5668 483 115 25 CenturyTel Internet Holdings,
22773 472 1180 20 Cox Communications, Inc.
7132 427 8385 370 SBC Internet Services
6198 419 372 193 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 586 1986 478 UUNET - Commercial IP service
3320 295 2093 231 Deutsche Telekom AG
3301 293 985 283 TeliaNet Sweden
8220 259 401 254 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 217 453 212 Song Networks
1257 198 691 174 SWIPnet Swedish IP Network
8708 196 247 179 Romania Data Systems S.A.
5515 177 777 127 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
8866 166 21 12 Bulgarian Telecommunication C
3269 159 1387 67 TELECOM ITALIA
719 155 306 98 LANLINK autonomous system
3300 152 184 85 AUCS Communications Services
6746 139 44 121 Dynamic Network Technologies,
25186 138 137 96 France Telecom Transpac's Tra
5400 137 268 121 BT Ignite European Backbone
6830 132 504 24 UPC Distribution Services
2856 124 2046 112 BTnet UK Regional network
8551 117 115 25 Bezeq International
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 349 527 145 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 217 99 53 Servicios Alestra S.A de C.V
6147 204 100 22 Telefonica Del Peru
19632 190 14 7 Metropolis Intercom S.A.
7303 156 68 25 Telecom Argentina Stet-France
11664 155 19 23 Keytech SA
22047 122 96 6 VTR PUNTO NET S.A.
6503 106 146 75 AVANTEL, S.A.
6505 105 84 68 Global One Communicaoes Ltda
13999 103 52 9 Mega Cable S.A. de C.V.
18822 103 6 15 TELEFONICA MANQUEHUE
11556 99 49 5 Cable-Wireless Panama
19169 95 6 16 Telconet
14117 86 6 3 Telefonica del Sur S.A.
5639 84 12 9 Telecommunications Services o
10481 82 32 7 Prima S.A.
14522 79 8 7 SatNet S.A.
22927 79 65 20 TELEFONICA DE ARGENTINA
23216 79 23 15 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
2018 90 295 87 Tertiary Education Network
5536 85 13 16 Internet Egypt Network
2905 67 264 61 The Internetworking Company o
8452 59 18 4 TEDATA
24835 53 28 4 RAYA Telecom - Egypt
12455 42 7 5 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
9129 27 2 2 UUNET Kenya
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 17 3 4 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
15808 16 1 1 Communication Solutions Ltd i
15706 15 4 2 Sudatel Internet Exchange Aut
21491 14 1 1 UTL On-line is RF broadband I
17148 13 1 7 First National Bank
11845 12 9 11 Data Pro Business Online
21280 12 1 2 Swift Global Kenya Ltd.Is an
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
18566 788 781 Covad Communications
4323 962 750 Time Warner Telecom
721 1017 706 DLA Systems Automation Center
9583 582 571 Sify Limited
27364 504 486 Armstrong Cable Services
5668 483 458 CenturyTel Internet Holdings,
22773 472 452 Cox Communications, Inc.
6197 833 449 BellSouth Network Solutions,
3602 507 415 Sprint Canada, Inc.
4755 490 377 Videsh Sanchar Nigam Ltd. Aut
4134 431 327 CHINANET-BACKBONE
6140 395 324 ImpSat
6467 345 313 E.Spire Communications, Inc.
7545 365 299 TPG Internet Pty Ltd
9443 370 294 Primus Telecommunications
20115 599 289 Charter Communications
6478 378 288 AT&T Worldnet Services
376 391 276 Reseau Interordinateurs Scien
16814 266 259 NSS, S.A.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
35899 UNALLOCATED 12.19.70.0/24 7018 AT&T WorldNet Servic
35864 UNALLOCATED 38.117.202.0/24 174 Cogent Communication
35884 UNALLOCATED 38.118.171.0/24 10912 InterNAP Network Ser
35894 UNALLOCATED 63.118.207.0/24 6128 Cablevision Systems
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
35892 UNALLOCATED 64.124.52.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.105.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.106.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.110.0/24 6461 AboveNet Communicati
35890 UNALLOCATED 64.193.55.0/24 209 Qwest
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
35895 UNALLOCATED 72.5.143.0/24 10910 InterNAP Network Ser
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
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
35875 UNALLOCATED 204.117.76.0/24 1239 Sprint
35866 UNALLOCATED 206.13.80.0/24 7132 SBC Internet Service
35849 UNALLOCATED 206.170.102.0/24 174 Cogent Communication
35892 UNALLOCATED 208.184.1.0/24 6461 AboveNet Communicati
35850 UNALLOCATED 209.139.6.0/24 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.22.0/23 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.56.0/22 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.108.0/23 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.110.0/24 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.180.0/24 3356 Level 3 Communicatio
35892 UNALLOCATED 209.249.93.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 209.249.94.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 209.249.95.0/24 6461 AboveNet Communicati
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
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 /8:17 /9:2 /10:8 /11:13 /12:60
/13:127 /14:266 /15:488 /16:7631 /17:2166 /18:3571
/19:8584 /20:9004 /21:7791 /22:10791 /23:11979 /24:80098
/25:260 /26:251 /27:133 /28:72 /29:37 /30:64
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 772 788 Covad Communications
6197 682 833 BellSouth Network Solutions,
7018 611 1407 AT&T WorldNet Services
2386 572 817 AT&T Data Communications Serv
27364 491 504 Armstrong Cable Services
9583 405 582 Sify Limited
4323 403 962 Time Warner Telecom
5668 403 483 CenturyTel Internet Holdings,
702 362 586 UUNET - Commercial IP service
1239 353 878 Sprint
10036 311 311 C&M Communication Co. Ltd.
6198 300 419 BellSouth Network Solutions,
6517 288 311 Yipes Communications, Inc.
7011 270 318 Citizens Utilities
15270 251 270 PaeTec.net -a division of Pae
3320 245 295 Deutsche Telekom AG
20115 244 599 Charter Communications
23126 238 249 KMC Telecom, Inc
22773 237 472 Cox Communications, Inc.
11456 228 268 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 10:6 12:1519 13:1 15:9
16:2 17:3 18:4 20:4 24:793 28:2
31:1 32:64 33:4 38:105 40:53 44:7
47:2 50:1 52:11 54:1 55:3 56:3
57:23 58:37 59:23 60:17 61:738 62:574
63:1880 64:2655 65:2076 66:2736 67:519 68:508
69:963 70:83 71:6 72:131 80:539 81:530
82:369 83:225 84:139 85:161 128:139 129:160
130:88 131:281 132:34 133:1 134:145 135:41
136:191 137:67 138:164 139:56 140:193 141:106
142:137 143:130 144:172 145:32 146:280 147:102
148:293 149:168 150:98 151:63 152:107 153:87
154:4 155:144 156:69 157:89 158:167 159:172
160:73 161:60 162:200 163:85 164:203 165:160
166:154 167:226 168:416 169:137 170:312 171:8
172:2 192:5677 193:3142 194:2323 195:1537 196:634
198:3924 199:3255 200:4007 201:113 202:5451 203:6123
204:3816 205:2017 206:2435 207:2729 208:2076 209:3274
210:1674 211:833 212:1178 213:345
End of report
