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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 22 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 166940
Prefixes after maximum aggregation: 96323
Unique aggregates announced to Internet: 80804
Total ASes present in the Internet Routing Table: 20113
Origin-only ASes present in the Internet Routing Table: 17525
Origin ASes announcing only one prefix: 8251
Transit ASes present in the Internet Routing Table: 2588
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: 1396364757
Equivalent to 83 /8s, 58 /16s and 213 /24s
Percentage of available address space announced: 37.7
Percentage of allocated address space announced: 56.7
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79190
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34541
Total APNIC prefixes after maximum aggregation: 15888
Prefixes being announced from the APNIC address blocks: 32434
Unique aggregates announced from the APNIC address blocks: 16347
APNIC Region origin ASes present in the Internet Routing Table: 2309
APNIC Region origin ASes announcing only one prefix: 677
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 191239296
Equivalent to 11 /8s, 102 /16s and 20 /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: 89512
Total ARIN prefixes after maximum aggregation: 54537
Prefixes being announced from the ARIN address blocks: 69964
Unique aggregates announced from the ARIN address blocks: 25838
ARIN Region origin ASes present in the Internet Routing Table: 10089
ARIN Region origin ASes announcing only one prefix: 3716
ARIN Region transit ASes present in the Internet Routing Table: 943
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 253782293
Equivalent to 15 /8s, 32 /16s and 105 /24s
Percentage of available ARIN address space announced: 63.0
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
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: 32130
Total RIPE prefixes after maximum aggregation: 21972
Prefixes being announced from the RIPE address blocks: 29146
Unique aggregates announced from the RIPE address blocks: 19546
RIPE Region origin ASes present in the Internet Routing Table: 6892
RIPE Region origin ASes announcing only one prefix: 3630
RIPE Region transit ASes present in the Internet Routing Table: 1135
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212183616
Equivalent to 12 /8s, 165 /16s and 170 /24s
Percentage of available RIPE address space announced: 63.2
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: 9078
Total LACNIC prefixes after maximum aggregation: 3147
Prefixes being announced from the LACNIC address blocks: 7453
Unique aggregates announced from the LACNIC address blocks: 4348
LACNIC Region origin ASes present in the Internet Routing Table: 626
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 117
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20523264
Equivalent to 1 /8s, 57 /16s and 41 /24s
Percentage of available LACNIC address space announced: 30.6
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: 1657
Total AfriNIC prefixes after maximum aggregation: 779
Prefixes being announced from the AfriNIC address blocks: 1025
Unique aggregates announced from the AfriNIC address blocks: 792
AfriNIC Region origin ASes present in the Internet Routing Table: 129
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2343424
Equivalent to 0 /8s, 35 /16s and 194 /24s
Percentage of available AfriNIC address space announced: 7.0
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 926 5566 194 CHINANET-BACKBONE
1221 755 1454 531 Telstra Pty Ltd
9583 755 77 14 Sify Limited
4755 666 248 146 Videsh Sanchar Nigam Ltd. Aut
4766 590 3412 278 Korea Telecom (KIX)
7545 507 106 73 TPG Internet Pty Ltd
17676 463 6707 98 Softbank BB Corp.
9443 376 78 76 Primus Telecommunications
9929 363 223 45 China Netcom Corp.
2907 343 1806 318 SINET Japan
9498 332 83 61 BHARTI BT INTERNET LTD.
7474 312 272 215 SingTel Optus Pty Ltd
17557 306 23 155 Pakistan Telecom
4802 286 50 163 Wantree Development
4808 283 244 166 CNCGROUP IP network: China169
9837 279 80 183 Powertel Ltd
18302 278 109 157 SK Global co., Ltd
17974 268 65 14 PT TELEKOMUNIKASI INDONESIA
17488 264 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 1494 6416 967 AT&T WorldNet Services
4323 1136 664 222 Time Warner Telecom
174 1135 5824 1054 Cogent Communications
721 1086 21779 310 DLA Systems Automation Center
701 1019 8168 862 UUNET Technologies, Inc.
6197 939 522 433 BellSouth Network Solutions,
2386 888 528 655 AT&T Data Communications Serv
1239 884 2875 636 Sprint
18566 830 224 7 Covad Communications
20115 649 498 323 Charter Communications
209 623 3473 491 Qwest
3356 566 10780 434 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 543 123 104 Sprint Canada, Inc.
3561 538 2385 422 Savvis
852 535 1093 387 Telus Advanced Communications
7725 509 64 17 MediaOne
22773 501 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
702 591 1995 482 UUNET - Commercial IP service
3301 300 1081 286 TeliaNet Sweden
3320 291 3232 240 Deutsche Telekom AG
8220 267 473 263 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 194 712 172 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
786 174 1794 174 The JANET IP Service
5400 173 286 146 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 150 272 36 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 141 145 98 France Telecom Transpac's Tra
1273 134 171 94 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 380 599 158 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 232 99 59 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
19632 142 14 5 Metropolis Intercom S.A.
22047 132 112 7 VTR PUNTO NET S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
6503 116 147 74 AVANTEL, S.A.
19169 114 7 21 Telconet
13999 110 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
10481 101 40 7 Prima S.A.
23216 98 24 23 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
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 50 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
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1136 914 Time Warner Telecom
18566 830 823 Covad Communications
721 1086 776 DLA Systems Automation Center
9583 755 741 Sify Limited
4134 926 732 CHINANET-BACKBONE
27364 554 536 Armstrong Cable Services
4755 666 520 Videsh Sanchar Nigam Ltd. Aut
6197 939 506 BellSouth Network Solutions,
7725 509 492 MediaOne
22773 501 478 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 543 439 Sprint Canada, Inc.
7545 507 434 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 379 345 E.Spire Communications, Inc.
20115 649 326 Charter Communications
19262 433 319 Verizon Global Networks
9929 363 318 China Netcom Corp.
4766 590 312 Korea Telecom (KIX)
9443 376 300 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
/13:163 /14:315 /15:602 /16:8464 /17:2632 /18:4510
/19:10495 /20:11439 /21:9488 /22:12969 /23:13856 /24:90896
/25:348 /26:295 /27:172 /28:51 /29:28 /30:73
/31:0 /32:26
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 814 830 Covad Communications
6197 765 939 BellSouth Network Solutions,
7018 701 1494 AT&T WorldNet Services
2386 602 888 AT&T Data Communications Serv
9583 574 755 Sify Limited
27364 545 554 Armstrong Cable Services
4323 539 1136 Time Warner Telecom
7725 479 509 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 402 494 CenturyTel Internet Holdings,
1239 372 884 Sprint
702 364 591 UUNET - Commercial IP service
6198 342 467 BellSouth Network Solutions,
7011 325 376 Citizens Utilities
15270 296 321 PaeTec.net -a division of Pae
19916 293 300 OLM LLC
6517 291 313 Yipes Communications, Inc.
20115 281 649 Charter Communications
9929 276 363 China Netcom Corp.
11456 276 315 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:23 9:1 12:1552 13:1 15:9
16:2 17:3 18:3 20:4 24:1181 30:2
32:69 33:2 38:136 40:54 44:4 47:2
52:4 55:2 56:3 57:23 58:137 59:58
60:66 61:747 62:639 63:1889 64:2792 65:2068
66:2915 67:636 68:555 69:1110 70:146 71:10
72:265 80:588 81:582 82:433 83:288 84:224
85:287 86:61 87:17 128:180 129:168 130:88
131:294 132:38 133:1 134:141 135:41 136:138
137:74 138:164 139:61 140:303 141:107 142:152
143:139 144:203 145:34 146:290 147:110 148:290
149:174 150:106 151:64 152:108 153:88 154:5
155:141 156:78 157:99 158:161 159:167 160:78
161:61 162:218 163:94 164:193 165:186 166:158
167:245 168:437 169:144 170:319 171:8 172:1
190:1 192:5703 193:3219 194:2427 195:1585 196:674
198:3904 199:3294 200:4059 201:208 202:5888 203:6385
204:3797 205:2007 206:2431 207:2806 208:2050 209:3317
210:1694 211:803 212:1253 213:1335 214:274 215:31
216:3566 217:1125 218:206 219:157 220:393 221:236
222:120
End of report
