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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 12 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 162009
Prefixes after maximum aggregation: 94157
Unique aggregates announced to Internet: 78129
Total ASes present in the Internet Routing Table: 19627
Origin-only ASes present in the Internet Routing Table: 17082
Origin ASes announcing only one prefix: 8002
Transit ASes present in the Internet Routing Table: 2545
Transit-only ASes present in the Internet Routing Table: 71
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: 13
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 33
Number of addresses announced to Internet: 1407990336
Equivalent to 83 /8s, 236 /16s and 58 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 75990
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33180
Total APNIC prefixes after maximum aggregation: 15590
Prefixes being announced from the APNIC address blocks: 31108
Unique aggregates announced from the APNIC address blocks: 15786
APNIC Region origin ASes present in the Internet Routing Table: 2260
APNIC Region origin ASes announcing only one prefix: 658
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: 182848384
Equivalent to 10 /8s, 230 /16s and 11 /24s
Percentage of available APNIC address space announced: 67.9
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: 87813
Total ARIN prefixes after maximum aggregation: 53562
Prefixes being announced from the ARIN address blocks: 68550
Unique aggregates announced from the ARIN address blocks: 25171
ARIN Region origin ASes present in the Internet Routing Table: 9931
ARIN Region origin ASes announcing only one prefix: 3618
ARIN Region transit ASes present in the Internet Routing Table: 936
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 247972352
Equivalent to 14 /8s, 199 /16s and 194 /24s
Percentage of available ARIN address space announced: 70.4
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, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30727
Total RIPE prefixes after maximum aggregation: 21219
Prefixes being announced from the RIPE address blocks: 27771
Unique aggregates announced from the RIPE address blocks: 18525
RIPE Region origin ASes present in the Internet Routing Table: 6630
RIPE Region origin ASes announcing only one prefix: 3496
RIPE Region transit ASes present in the Internet Routing Table: 1107
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 204774336
Equivalent to 12 /8s, 52 /16s and 155 /24s
Percentage of available RIPE address space announced: 71.8
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: 8680
Total LACNIC prefixes after maximum aggregation: 3023
Prefixes being announced from the LACNIC address blocks: 7099
Unique aggregates announced from the LACNIC address blocks: 4091
LACNIC Region origin ASes present in the Internet Routing Table: 616
LACNIC Region origin ASes announcing only one prefix: 195
LACNIC Region transit ASes present in the Internet Routing Table: 115
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18678528
Equivalent to 1 /8s, 29 /16s and 3 /24s
Percentage of available LACNIC address space announced: 55.7
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1590
Total AfriNIC prefixes after maximum aggregation: 763
Prefixes being announced from the AfriNIC address blocks: 965
Unique aggregates announced from the AfriNIC address blocks: 770
AfriNIC Region origin ASes present in the Internet Routing Table: 123
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 2269696
Equivalent to 0 /8s, 34 /16s and 162 /24s
Percentage of available AfriNIC address space announced: 6.8
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 908 5139 186 CHINANET-BACKBONE
1221 772 1188 552 Telstra Pty Ltd
9583 734 54 75 Sify Limited
4755 590 244 123 Videsh Sanchar Nigam Ltd. Aut
4766 588 3412 277 Korea Telecom (KIX)
7545 493 86 71 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 360 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
10036 318 29 288 C&M Communication Co. Ltd.
17557 315 22 151 Pakistan Telecom
4808 309 251 169 CNCGROUP IP network: China169
7474 301 268 210 SingTel Optus Pty Ltd
9498 296 83 59 BHARTI BT INTERNET LTD.
4802 281 47 166 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 257 279 212 UUNET - Commercial IP service
2764 253 238 198 AAPT Limited
18302 251 75 139 SK Global co., Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1484 6501 955 AT&T WorldNet Services
174 1178 5611 1009 Cogent Communications
721 1114 21763 313 DLA Systems Automation Center
4323 1103 648 218 Time Warner Telecom
701 1003 8234 855 UUNET Technologies, Inc.
6197 904 378 460 BellSouth Network Solutions,
1239 896 2869 650 Sprint
2386 852 533 632 AT&T Data Communications Serv
18566 806 224 7 Covad Communications
209 653 3520 493 Qwest
20115 594 503 312 Charter Communications
3356 580 10834 438 Level 3 Communications, LLC
3561 540 2400 422 Savvis
27364 539 43 18 Armstrong Cable Services
852 531 1095 391 Telus Advanced Communications
3602 509 122 96 Sprint Canada, Inc.
5668 488 115 25 CenturyTel Internet Holdings,
22773 483 1188 21 Cox Communications, Inc.
6198 465 382 219 BellSouth Network Solutions,
7725 447 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 595 2003 487 UUNET - Commercial IP service
3320 303 3233 237 Deutsche Telekom AG
3301 291 1084 281 TeliaNet Sweden
8220 273 469 267 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 491 226 Song Networks
8708 224 251 208 Romania Data Systems S.A.
1257 199 727 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
5400 166 286 135 BT Ignite European Backbone
6746 165 47 144 Dynamic Network Technologies,
3269 164 1488 69 TELECOM ITALIA
8866 163 21 11 Bulgarian Telecommunication C
719 159 340 101 LANLINK autonomous system
3300 154 184 87 AUCS Communications Services
25186 138 137 98 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
2856 128 2305 116 BTnet UK Regional network
9051 128 8 34 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 372 597 146 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 225 99 54 Servicios Alestra S.A de C.V
6147 197 102 20 Telefonica Del Peru
11664 155 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 135 8 4 Telefonica del Sur S.A.
6505 131 90 88 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
19632 119 14 5 Metropolis Intercom S.A.
13999 112 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 102 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 99 6 16 Telconet
21826 92 12 18 INTERCABLE
22927 92 65 22 TELEFONICA DE ARGENTINA
11311 89 8 18 Sinectis S.A.
23216 89 24 23 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 271 637 225 The Internet Solution
5536 119 15 17 Internet Egypt Network
20928 93 16 2 Noor Advanced Technologies AS
2018 90 295 86 Tertiary Education Network
2905 74 266 68 The Internetworking Company o
8452 68 28 6 TEDATA
24835 63 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
15706 31 8 3 Sudatel Internet Exchange Aut
2609 26 26 3 Tunisia BackBone AS
8524 25 1 4 AUCEGYPT Autonomous System
15475 24 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
33765 19 3 8 TANZANIA TELECOMMUNICATIONS C
7460 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1103 885 Time Warner Telecom
721 1114 801 DLA Systems Automation Center
18566 806 799 Covad Communications
4134 908 722 CHINANET-BACKBONE
9583 734 659 Sify Limited
27364 539 521 Armstrong Cable Services
4755 590 467 Videsh Sanchar Nigam Ltd. Aut
5668 488 463 CenturyTel Internet Holdings,
22773 483 462 Cox Communications, Inc.
6197 904 444 BellSouth Network Solutions,
7725 447 432 MediaOne
7545 493 422 TPG Internet Pty Ltd
3602 509 413 Sprint Canada, Inc.
6467 420 385 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 402 329 ImpSat
9929 360 314 China Netcom Corp.
4766 588 311 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
6478 415 289 AT&T Worldnet Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
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
172.1.0.0/16 12956 Telefonica Data Autonomous Sy
172.2.0.0/16 12956 Telefonica Data Autonomous Sy
172.3.0.0/16 12956 Telefonica Data Autonomous Sy
172.4.0.0/16 12956 Telefonica Data Autonomous Sy
172.5.0.0/16 12956 Telefonica Data Autonomous Sy
172.6.0.0/16 12956 Telefonica Data Autonomous Sy
172.7.0.0/16 12956 Telefonica Data Autonomous Sy
172.8.0.0/16 12956 Telefonica Data Autonomous Sy
172.9.0.0/16 12956 Telefonica Data Autonomous Sy
172.10.0.0/16 12956 Telefonica Data Autonomous Sy
172.11.0.0/16 12956 Telefonica Data Autonomous Sy
172.12.0.0/16 12956 Telefonica Data Autonomous Sy
172.13.0.0/16 12956 Telefonica Data Autonomous Sy
172.14.0.0/16 12956 Telefonica Data Autonomous Sy
172.15.0.0/16 12956 Telefonica Data Autonomous Sy
172.32.0.0/24 7011 Citizens Utilities
172.50.0.0/16 12956 Telefonica Data Autonomous Sy
172.51.0.0/16 12956 Telefonica Data Autonomous Sy
172.52.0.0/16 12956 Telefonica Data Autonomous Sy
172.74.0.0/16 12956 Telefonica Data Autonomous Sy
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 /12:70
/13:155 /14:306 /15:584 /16:8405 /17:2550 /18:4379
/19:10313 /20:11096 /21:9019 /22:12443 /23:13417 /24:88342
/25:282 /26:245 /27:142 /28:76 /29:39 /30:72
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 790 806 Covad Communications
6197 743 904 BellSouth Network Solutions,
7018 675 1484 AT&T WorldNet Services
2386 603 852 AT&T Data Communications Serv
9583 550 734 Sify Limited
27364 528 539 Armstrong Cable Services
4323 522 1103 Time Warner Telecom
7725 420 447 MediaOne
4766 405 588 Korea Telecom (KIX)
5668 405 488 CenturyTel Internet Holdings,
1239 378 896 Sprint
702 367 595 UUNET - Commercial IP service
6198 342 465 BellSouth Network Solutions,
10036 318 318 C&M Communication Co. Ltd.
6467 301 420 E.Spire Communications, Inc.
6517 298 321 Yipes Communications, Inc.
7011 298 348 Citizens Utilities
9929 281 360 China Netcom Corp.
11456 278 320 Carolina Online, Inc.
15270 259 279 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:13 12:1533 13:1 15:9 16:2
17:3 18:4 20:4 24:1091 30:2 32:69
33:4 38:113 40:53 44:3 47:2 52:4
55:2 56:3 57:23 58:44 59:34 60:33
61:798 62:608 63:1880 64:2710 65:2067 66:2827
67:579 68:528 69:1009 70:104 71:17 72:178
80:571 81:535 82:384 83:262 84:177 85:189
86:7 128:147 129:160 130:85 131:279 132:34
133:1 134:148 135:40 136:190 137:65 138:171
139:57 140:191 141:105 142:153 143:142 144:182
145:33 146:281 147:105 148:293 149:169 150:97
151:65 152:106 153:86 154:5 155:144 156:78
157:92 158:161 159:174 160:77 161:63 162:203
163:79 164:207 165:174 166:154 167:233 168:423
169:140 170:316 171:8 172:2 192:5702 193:3196
194:2357 195:1556 196:651 198:3937 199:3274 200:3946
201:126 202:5597 203:6172 204:3822 205:2002 206:2477
207:2760 208:2061 209:3292 210:1684 211:826 212:1142
213:1280 214:265 215:34 216:3458 217:1131 218:198
219:105 220:375 221:214 222:101
End of report
