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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 25 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167253
Prefixes after maximum aggregation: 96463
Unique aggregates announced to Internet: 80867
Total ASes present in the Internet Routing Table: 20117
Origin-only ASes present in the Internet Routing Table: 17530
Origin ASes announcing only one prefix: 8252
Transit ASes present in the Internet Routing Table: 2587
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 16
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1397572309
Equivalent to 83 /8s, 77 /16s and 66 /24s
Percentage of available address space announced: 37.7
Percentage of allocated address space announced: 56.8
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79349
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34704
Total APNIC prefixes after maximum aggregation: 15929
Prefixes being announced from the APNIC address blocks: 32575
Unique aggregates announced from the APNIC address blocks: 16310
APNIC Region origin ASes present in the Internet Routing Table: 2314
APNIC Region origin ASes announcing only one prefix: 678
APNIC Region transit ASes present in the Internet Routing Table: 347
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 191368064
Equivalent to 11 /8s, 104 /16s and 11 /24s
Percentage of available APNIC address space announced: 71.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
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: 89588
Total ARIN prefixes after maximum aggregation: 54608
Prefixes being announced from the ARIN address blocks: 70071
Unique aggregates announced from the ARIN address blocks: 25835
ARIN Region origin ASes present in the Internet Routing Table: 10090
ARIN Region origin ASes announcing only one prefix: 3716
ARIN Region transit ASes present in the Internet Routing Table: 944
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 254709269
Equivalent to 15 /8s, 46 /16s and 142 /24s
Percentage of available ARIN address space announced: 63.3
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, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 32177
Total RIPE prefixes after maximum aggregation: 21989
Prefixes being announced from the RIPE address blocks: 29189
Unique aggregates announced from the RIPE address blocks: 19627
RIPE Region origin ASes present in the Internet Routing Table: 6890
RIPE Region origin ASes announcing only one prefix: 3630
RIPE Region transit ASes present in the Internet Routing Table: 1134
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212265536
Equivalent to 12 /8s, 166 /16s and 234 /24s
Percentage of available RIPE address space announced: 63.3
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, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9113
Total LACNIC prefixes after maximum aggregation: 3158
Prefixes being announced from the LACNIC address blocks: 7481
Unique aggregates announced from the LACNIC address blocks: 4357
LACNIC Region origin ASes present in the Internet Routing Table: 625
LACNIC Region origin ASes announcing only one prefix: 192
LACNIC Region transit ASes present in the Internet Routing Table: 117
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 20574208
Equivalent to 1 /8s, 57 /16s and 240 /24s
Percentage of available LACNIC address space announced: 30.7
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1649
Total AfriNIC prefixes after maximum aggregation: 779
Prefixes being announced from the AfriNIC address blocks: 1004
Unique aggregates announced from the AfriNIC address blocks: 770
AfriNIC Region origin ASes present in the Internet Routing Table: 130
AfriNIC Region origin ASes announcing only one prefix: 36
AfriNIC Region transit ASes present in the Internet Routing Table: 15
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2329856
Equivalent to 0 /8s, 35 /16s and 141 /24s
Percentage of available AfriNIC address space announced: 6.9
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 961 5568 195 CHINANET-BACKBONE
9583 776 77 14 Sify Limited
1221 749 1455 527 Telstra Pty Ltd
4755 665 248 146 Videsh Sanchar Nigam Ltd. Aut
4766 590 3412 278 Korea Telecom (KIX)
7545 513 106 74 TPG Internet Pty Ltd
17676 463 6707 98 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9929 364 224 46 China Netcom Corp.
2907 343 1806 318 SINET Japan
9498 332 83 61 BHARTI BT INTERNET LTD.
7474 313 272 216 SingTel Optus Pty Ltd
17557 296 23 153 Pakistan Telecom
4802 290 50 167 Wantree Development
4808 286 244 168 CNCGROUP IP network: China169
9837 279 80 183 Powertel Ltd
18302 278 109 156 SK Global co., Ltd
17974 269 65 14 PT TELEKOMUNIKASI INDONESIA
17488 266 16 8 Hathway IP Over Cable Interne
703 252 261 207 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6416 966 AT&T WorldNet Services
4323 1139 672 224 Time Warner Telecom
174 1134 5824 1053 Cogent Communications
721 1082 21779 310 DLA Systems Automation Center
701 1021 8168 864 UUNET Technologies, Inc.
6197 937 522 432 BellSouth Network Solutions,
2386 889 528 656 AT&T Data Communications Serv
1239 876 2886 630 Sprint
18566 832 224 7 Covad Communications
20115 652 499 321 Charter Communications
209 621 3471 489 Qwest
3356 561 10765 429 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 544 123 104 Sprint Canada, Inc.
3561 538 2385 422 Savvis
852 527 1093 387 Telus Advanced Communications
7725 510 64 17 MediaOne
22773 503 1188 23 Cox Communications, Inc.
5668 494 114 22 CenturyTel Internet Holdings,
6198 467 396 224 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 592 1995 483 UUNET - Commercial IP service
3301 300 1081 286 TeliaNet Sweden
3320 291 3232 240 Deutsche Telekom AG
8220 266 473 262 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 224 253 210 Romania Data Systems S.A.
1257 196 712 174 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
786 175 1794 175 The JANET IP Service
5400 174 286 147 BT Ignite European Backbone
6746 173 49 151 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 163 21 11 Bulgarian Telecommunication C
3300 154 184 87 AUCS Communications Services
9121 151 272 36 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 141 145 98 France Telecom Transpac's Tra
1273 136 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 378 599 158 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 236 99 60 Servicios Alestra S.A de C.V
6147 192 110 21 Telefonica Del Peru
11664 181 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 150 69 18 Telecom Argentina Stet-France
22047 143 112 7 VTR PUNTO NET S.A.
19632 142 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 115 7 22 Telconet
6503 114 147 74 AVANTEL, S.A.
13999 110 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
10481 101 40 7 Prima S.A.
22927 97 81 26 TELEFONICA DE ARGENTINA
23216 97 24 22 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
21826 95 13 20 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 263 621 221 The Internet Solution
5536 120 15 17 Internet Egypt Network
2018 97 295 88 Tertiary Education Network
8452 93 28 6 TEDATA
2905 76 266 68 The Internetworking Company o
24835 57 34 6 RAYA Telecom - Egypt
20928 56 16 2 Noor Advanced Technologies AS
6713 51 54 8 Itissalat Al-MAGHRIB
15475 49 84 4 Nile Online
9129 43 3 3 UUNET Kenya
12455 38 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
8524 23 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
23889 20 5 9 MAURITIUS TELECOM
10798 19 1 11 Standard Bank of South Africa
25364 19 1 3 Egypt Cyber Cenyer Network
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1139 915 Time Warner Telecom
18566 832 825 Covad Communications
721 1082 772 DLA Systems Automation Center
4134 961 766 CHINANET-BACKBONE
9583 776 762 Sify Limited
27364 554 536 Armstrong Cable Services
4755 665 519 Videsh Sanchar Nigam Ltd. Aut
6197 937 505 BellSouth Network Solutions,
7725 510 493 MediaOne
22773 503 480 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 544 440 Sprint Canada, Inc.
7545 513 439 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 435 361 E.Spire Communications, Inc.
20115 652 331 Charter Communications
19262 432 319 Verizon Global Networks
9929 364 318 China Netcom Corp.
4766 590 312 Korea Telecom (KIX)
9443 382 305 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
65507 PRIVATE 200.0.64.0/24 27750 Cooperación Latino A
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
65142 PRIVATE 200.32.76.0/24 6140 ImpSat
65142 PRIVATE 200.32.77.0/24 6140 ImpSat
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.58.0/23 11664 Keytech SA
64512 PRIVATE 200.80.148.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
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
192.169.0.0/23 3970 RGnet, Inc.
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 /9:3 /10:8 /11:15 /12:75
/13:167 /14:317 /15:602 /16:8464 /17:2642 /18:4522
/19:10525 /20:11468 /21:9492 /22:12989 /23:13884 /24:91064
/25:350 /26:294 /27:171 /28:51 /29:28 /30:72
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 816 832 Covad Communications
6197 763 937 BellSouth Network Solutions,
7018 701 1491 AT&T WorldNet Services
2386 602 889 AT&T Data Communications Serv
9583 592 776 Sify Limited
27364 545 554 Armstrong Cable Services
4323 540 1139 Time Warner Telecom
7725 480 510 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 402 494 CenturyTel Internet Holdings,
702 365 592 UUNET - Commercial IP service
1239 361 876 Sprint
6198 342 467 BellSouth Network Solutions,
7011 326 377 Citizens Utilities
19916 305 312 OLM LLC
15270 296 321 PaeTec.net -a division of Pae
6517 292 314 Yipes Communications, Inc.
6467 288 435 E.Spire Communications, Inc.
20115 283 652 Charter Communications
9929 276 364 China Netcom Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:23 9:1 12:1554 13:1 15:9
16:2 17:3 18:3 20:4 24:1182 30:2
32:69 33:2 38:136 40:54 44:4 47:2
52:4 55:2 56:3 57:23 58:138 59:58
60:67 61:748 62:638 63:1883 64:2803 65:2067
66:2924 67:638 68:556 69:1111 70:147 71:10
72:267 80:589 81:589 82:436 83:294 84:225
85:288 86:62 87:17 128:159 129:167 130:88
131:294 132:38 133:1 134:142 135:42 136:138
137:73 138:164 139:61 140:304 141:105 142:151
143:138 144:203 145:34 146:290 147:110 148:290
149:177 150:106 151:64 152:108 153:88 154:5
155:140 156:78 157:99 158:162 159:167 160:78
161:70 162:218 163:94 164:193 165:186 166:156
167:242 168:439 169:144 170:323 171:8 172:1
190:1 192:5705 193:3224 194:2426 195:1595 196:654
198:3900 199:3288 200:4076 201:212 202:5914 203:6403
204:3802 205:2038 206:2436 207:2801 208:2045 209:3314
210:1701 211:805 212:1255 213:1337 214:273 215:31
216:3596 217:1121 218:210 219:157 220:392 221:249
222:121
End of report
