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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 01 Jun, 2005
Analysis Summary
----------------
BGP routing table entries examined: 163652
Prefixes after maximum aggregation: 94810
Unique aggregates announced to Internet: 78946
Total ASes present in the Internet Routing Table: 19742
Origin-only ASes present in the Internet Routing Table: 17183
Origin ASes announcing only one prefix: 8052
Transit ASes present in the Internet Routing Table: 2559
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 29
Prefixes from unregistered ASNs in the Routing Table: 18
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1413698880
Equivalent to 84 /8s, 67 /16s and 85 /24s
Percentage of available address space announced: 38.1
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 77019
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33588
Total APNIC prefixes after maximum aggregation: 15719
Prefixes being announced from the APNIC address blocks: 31502
Unique aggregates announced from the APNIC address blocks: 15986
APNIC Region origin ASes present in the Internet Routing Table: 2282
APNIC Region origin ASes announcing only one prefix: 668
APNIC Region transit ASes present in the Internet Routing Table: 347
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 185973888
Equivalent to 11 /8s, 21 /16s and 188 /24s
Percentage of available APNIC address space announced: 69.0
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: 88521
Total ARIN prefixes after maximum aggregation: 53838
Prefixes being announced from the ARIN address blocks: 69171
Unique aggregates announced from the ARIN address blocks: 25316
ARIN Region origin ASes present in the Internet Routing Table: 9959
ARIN Region origin ASes announcing only one prefix: 3632
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: 18
Number of ARIN addresses announced to Internet: 249096192
Equivalent to 14 /8s, 216 /16s and 232 /24s
Percentage of available ARIN address space announced: 70.7
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: 31063
Total RIPE prefixes after maximum aggregation: 21432
Prefixes being announced from the RIPE address blocks: 28120
Unique aggregates announced from the RIPE address blocks: 18904
RIPE Region origin ASes present in the Internet Routing Table: 6688
RIPE Region origin ASes announcing only one prefix: 3525
RIPE Region transit ASes present in the Internet Routing Table: 1114
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 29
Number of RIPE addresses announced to Internet: 207127232
Equivalent to 12 /8s, 88 /16s and 130 /24s
Percentage of available RIPE address space announced: 72.6
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: 8827
Total LACNIC prefixes after maximum aggregation: 3055
Prefixes being announced from the LACNIC address blocks: 7231
Unique aggregates announced from the LACNIC address blocks: 4173
LACNIC Region origin ASes present in the Internet Routing Table: 622
LACNIC Region origin ASes announcing only one prefix: 192
LACNIC Region transit ASes present in the Internet Routing Table: 114
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18967552
Equivalent to 1 /8s, 33 /16s and 108 /24s
Percentage of available LACNIC address space announced: 56.5
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: 1629
Total AfriNIC prefixes after maximum aggregation: 766
Prefixes being announced from the AfriNIC address blocks: 1000
Unique aggregates announced from the AfriNIC address blocks: 775
AfriNIC Region origin ASes present in the Internet Routing Table: 125
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2279424
Equivalent to 0 /8s, 34 /16s and 200 /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 910 5146 190 CHINANET-BACKBONE
1221 754 1438 542 Telstra Pty Ltd
9583 746 54 78 Sify Limited
4755 608 246 123 Videsh Sanchar Nigam Ltd. Aut
4766 595 3413 279 Korea Telecom (KIX)
7545 499 88 72 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 364 221 48 China Netcom Corp.
2907 339 1821 315 SINET Japan
10036 324 29 291 C&M Communication Co. Ltd.
17557 314 22 151 Pakistan Telecom
7474 310 271 213 SingTel Optus Pty Ltd
4808 309 250 169 CNCGROUP IP network: China169
9498 308 83 61 BHARTI BT INTERNET LTD.
4802 285 48 162 Wantree Development
17974 261 65 14 PT TELEKOMUNIKASI INDONESIA
18302 259 108 143 SK Global co., Ltd
703 254 277 209 UUNET - Commercial IP service
2764 254 238 199 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1485 6459 963 AT&T WorldNet Services
174 1186 5611 1017 Cogent Communications
4323 1123 647 217 Time Warner Telecom
721 1108 21787 313 DLA Systems Automation Center
701 1014 8186 854 UUNET Technologies, Inc.
6197 911 381 466 BellSouth Network Solutions,
1239 891 2869 646 Sprint
2386 852 532 635 AT&T Data Communications Serv
18566 812 224 7 Covad Communications
209 651 3505 494 Qwest
20115 602 507 314 Charter Communications
3356 568 10826 432 Level 3 Communications, LLC
27364 565 43 18 Armstrong Cable Services
3561 533 2384 419 Savvis
852 532 1095 390 Telus Advanced Communications
3602 527 123 100 Sprint Canada, Inc.
5668 488 115 25 CenturyTel Internet Holdings,
22773 488 1188 23 Cox Communications, Inc.
6198 468 445 210 BellSouth Network Solutions,
7725 458 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 597 2001 489 UUNET - Commercial IP service
3320 303 3232 240 Deutsche Telekom AG
3301 297 1085 285 TeliaNet Sweden
8220 274 469 268 COLT Telecommunications
680 252 2041 238 DFN-IP service G-WiN
8708 230 254 214 Romania Data Systems S.A.
3246 228 490 223 Song Networks
1257 201 729 177 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 167 47 146 Dynamic Network Technologies,
3269 166 1496 69 TELECOM ITALIA
8866 166 21 11 Bulgarian Telecommunication C
719 165 340 102 LANLINK autonomous system
5400 160 285 136 BT Ignite European Backbone
3300 153 184 86 AUCS Communications Services
6830 137 513 27 UPC Distribution Services
25186 136 137 96 France Telecom Transpac's Tra
8551 134 115 23 Bezeq International
9051 131 8 30 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 375 600 151 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 220 98 53 Servicios Alestra S.A de C.V
11664 194 19 22 Keytech SA
6147 187 102 20 Telefonica Del Peru
7303 148 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 133 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
11556 130 64 3 Cable-Wireless Panama
19632 120 14 5 Metropolis Intercom S.A.
13999 113 52 9 Mega Cable S.A. de C.V.
18822 106 7 12 TELEFONICA MANQUEHUE
6503 103 146 73 AVANTEL, S.A.
19169 102 6 17 Telconet
10481 101 40 7 Prima S.A.
22927 97 73 25 TELEFONICA DE ARGENTINA
21826 93 12 19 INTERCABLE
23216 93 24 23 RAMtelecom Telecomunicaciones
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 637 223 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 92 295 86 Tertiary Education Network
20928 92 16 2 Noor Advanced Technologies AS
8452 78 28 6 TEDATA
2905 73 265 67 The Internetworking Company o
24835 63 34 6 RAYA Telecom - Egypt
6713 59 54 8 Itissalat Al-MAGHRIB
9129 45 3 3 UUNET Kenya
12455 38 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 32 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
33765 20 3 8 TANZANIA TELECOMMUNICATIONS C
10798 19 1 11 Standard Bank of South Africa
23889 18 5 6 MAURITIUS TELECOM
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 1123 906 Time Warner Telecom
18566 812 805 Covad Communications
721 1108 795 DLA Systems Automation Center
4134 910 720 CHINANET-BACKBONE
9583 746 668 Sify Limited
27364 565 547 Armstrong Cable Services
4755 608 485 Videsh Sanchar Nigam Ltd. Aut
22773 488 465 Cox Communications, Inc.
5668 488 463 CenturyTel Internet Holdings,
6197 911 445 BellSouth Network Solutions,
7725 458 443 MediaOne
3602 527 427 Sprint Canada, Inc.
7545 499 427 TPG Internet Pty Ltd
6467 423 390 E.Spire Communications, Inc.
17676 436 361 Softbank BB Corp.
6140 410 333 ImpSat
4766 595 316 Korea Telecom (KIX)
9929 364 316 China Netcom Corp.
9443 370 294 Primus Telecommunications
20115 602 288 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64512 PRIVATE 61.17.25.0/24 4755 Videsh Sanchar Nigam
65009 PRIVATE 69.39.0.0/20 21803 1st Class Internet S
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.62.0/23 11664 Keytech SA
64512 PRIVATE 200.80.154.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
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
192.172.0.0/19 721 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 /12:72
/13:158 /14:308 /15:601 /16:8410 /17:2563 /18:4416
/19:10333 /20:11216 /21:9120 /22:12551 /23:13667 /24:89221
/25:322 /26:282 /27:141 /28:68 /29:41 /30:81
/31:0 /32:36
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 796 812 Covad Communications
6197 749 911 BellSouth Network Solutions,
7018 676 1485 AT&T WorldNet Services
2386 602 852 AT&T Data Communications Serv
9583 563 746 Sify Limited
27364 556 565 Armstrong Cable Services
4323 537 1123 Time Warner Telecom
7725 430 458 MediaOne
4766 412 595 Korea Telecom (KIX)
5668 402 488 CenturyTel Internet Holdings,
1239 375 891 Sprint
702 369 597 UUNET - Commercial IP service
6198 340 468 BellSouth Network Solutions,
10036 324 324 C&M Communication Co. Ltd.
7011 304 354 Citizens Utilities
6467 296 423 E.Spire Communications, Inc.
9929 283 364 China Netcom Corp.
6517 281 303 Yipes Communications, Inc.
15270 272 292 PaeTec.net -a division of Pae
11456 270 309 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:14 12:1548 13:1 15:9 16:2
17:3 18:3 20:4 24:1145 30:2 32:68
33:4 38:122 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:89 59:41 60:47
61:814 62:609 63:1875 64:2787 65:2067 66:2872
67:577 68:521 69:1041 70:108 71:6 72:190
80:575 81:550 82:408 83:270 84:189 85:230
86:19 128:176 129:171 130:83 131:273 132:37
133:1 134:150 135:40 136:189 137:69 138:168
139:61 140:190 141:101 142:149 143:145 144:185
145:33 146:280 147:105 148:300 149:165 150:104
151:65 152:106 153:86 154:5 155:142 156:78
157:93 158:161 159:171 160:78 161:63 162:205
163:86 164:210 165:176 166:159 167:234 168:424
169:140 170:316 171:8 172:1 192:5712 193:3154
194:2397 195:1562 196:658 198:3937 199:3285 200:3949
201:143 202:5655 203:6224 204:3840 205:2006 206:2499
207:2849 208:2062 209:3317 210:1699 211:825 212:1172
213:1287 214:266 215:31 216:3448 217:1153 218:201
219:107 220:376 221:220 222:104
End of report
