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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 21 Jun, 2005
Analysis Summary
----------------
BGP routing table entries examined: 165774
Prefixes after maximum aggregation: 95540
Unique aggregates announced to Internet: 79519
Total ASes present in the Internet Routing Table: 19883
Origin-only ASes present in the Internet Routing Table: 17320
Origin ASes announcing only one prefix: 8119
Transit ASes present in the Internet Routing Table: 2563
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: 24
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: 15
Number of addresses announced to Internet: 1401765344
Equivalent to 83 /8s, 141 /16s and 61 /24s
Percentage of available address space announced: 37.8
Percentage of allocated address space announced: 58.1
Percentage of available address space allocated: 65.1
Total number of prefixes smaller than registry allocations: 78433
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34211
Total APNIC prefixes after maximum aggregation: 15821
Prefixes being announced from the APNIC address blocks: 32100
Unique aggregates announced from the APNIC address blocks: 15894
APNIC Region origin ASes present in the Internet Routing Table: 2295
APNIC Region origin ASes announcing only one prefix: 672
APNIC Region transit ASes present in the Internet Routing Table: 346
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 187143040
Equivalent to 11 /8s, 39 /16s and 147 /24s
Percentage of available APNIC address space announced: 69.4
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: 89190
Total ARIN prefixes after maximum aggregation: 54125
Prefixes being announced from the ARIN address blocks: 69666
Unique aggregates announced from the ARIN address blocks: 25495
ARIN Region origin ASes present in the Internet Routing Table: 10012
ARIN Region origin ASes announcing only one prefix: 3671
ARIN Region transit ASes present in the Internet Routing Table: 940
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 250616064
Equivalent to 14 /8s, 240 /16s and 25 /24s
Percentage of available ARIN address space announced: 62.2
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: 31470
Total RIPE prefixes after maximum aggregation: 21677
Prefixes being announced from the RIPE address blocks: 28522
Unique aggregates announced from the RIPE address blocks: 19162
RIPE Region origin ASes present in the Internet Routing Table: 6761
RIPE Region origin ASes announcing only one prefix: 3553
RIPE Region transit ASes present in the Internet Routing Table: 1110
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 208906816
Equivalent to 12 /8s, 115 /16s and 170 /24s
Percentage of available RIPE address space announced: 73.2
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, 88/8, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9206
Total LACNIC prefixes after maximum aggregation: 3143
Prefixes being announced from the LACNIC address blocks: 7537
Unique aggregates announced from the LACNIC address blocks: 4284
LACNIC Region origin ASes present in the Internet Routing Table: 622
LACNIC Region origin ASes announcing only one prefix: 188
LACNIC Region transit ASes present in the Internet Routing Table: 113
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20274208
Equivalent to 1 /8s, 53 /16s and 92 /24s
Percentage of available LACNIC address space announced: 30.2
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: 1673
Total AfriNIC prefixes after maximum aggregation: 774
Prefixes being announced from the AfriNIC address blocks: 1016
Unique aggregates announced from the AfriNIC address blocks: 776
AfriNIC Region origin ASes present in the Internet Routing Table: 128
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 17
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2294272
Equivalent to 0 /8s, 35 /16s and 2 /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 918 5166 192 CHINANET-BACKBONE
9583 762 76 14 Sify Limited
1221 761 1454 540 Telstra Pty Ltd
4755 630 247 141 Videsh Sanchar Nigam Ltd. Aut
4766 596 3413 279 Korea Telecom (KIX)
7545 500 104 71 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9443 374 77 76 Primus Telecommunications
9929 356 221 48 China Netcom Corp.
2907 345 1822 320 SINET Japan
10036 345 65 311 C&M Communication Co. Ltd.
9498 321 83 61 BHARTI BT INTERNET LTD.
17557 318 22 153 Pakistan Telecom
7474 313 272 217 SingTel Optus Pty Ltd
4802 282 49 161 Wantree Development
4808 282 245 160 CNCGROUP IP network: China169
9837 281 80 185 Powertel Ltd
18302 266 108 151 SK Global co., Ltd
17974 257 65 14 PT TELEKOMUNIKASI INDONESIA
703 253 276 207 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1492 6460 978 AT&T WorldNet Services
174 1343 5793 1069 Cogent Communications
4323 1120 647 217 Time Warner Telecom
721 1109 21787 313 DLA Systems Automation Center
701 1006 8168 850 UUNET Technologies, Inc.
6197 927 534 429 BellSouth Network Solutions,
1239 889 2870 642 Sprint
2386 885 526 652 AT&T Data Communications Serv
18566 820 224 7 Covad Communications
20115 646 493 318 Charter Communications
209 631 3506 497 Qwest
27364 565 43 18 Armstrong Cable Services
3356 558 10821 427 Level 3 Communications, LLC
3602 542 123 100 Sprint Canada, Inc.
3561 539 2385 422 Savvis
852 526 1093 388 Telus Advanced Communications
22773 495 1188 23 Cox Communications, Inc.
5668 488 115 25 CenturyTel Internet Holdings,
7725 487 60 15 MediaOne
6198 464 416 218 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 597 2001 489 UUNET - Commercial IP service
3320 306 3232 242 Deutsche Telekom AG
3301 294 1080 282 TeliaNet Sweden
8220 268 469 264 COLT Telecommunications
680 252 2041 238 DFN-IP service G-WiN
8708 233 254 216 Romania Data Systems S.A.
3246 226 488 221 Song Networks
1257 198 712 174 SWIPnet Swedish IP Network
5515 179 778 129 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 169 1520 72 TELECOM ITALIA
6746 169 47 147 Dynamic Network Technologies,
719 168 340 101 LANLINK autonomous system
5400 164 285 137 BT Ignite European Backbone
8866 158 21 11 Bulgarian Telecommunication C
3300 156 184 88 AUCS Communications Services
6830 138 529 28 UPC Distribution Services
9121 138 271 36 TTnet Autonomous System
25186 138 137 95 France Telecom Transpac's Tra
2856 135 2313 117 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 627 603 187 UniNet S.A. de C.V.
16814 264 16 12 NSS, S.A.
11172 220 98 52 Servicios Alestra S.A de C.V
6147 197 110 21 Telefonica Del Peru
11664 196 19 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 149 68 21 Telecom Argentina Stet-France
6505 131 90 88 Global One Communicaoes Ltda
11556 131 64 3 Cable-Wireless Panama
22047 131 96 6 VTR PUNTO NET S.A.
18822 109 7 14 TELEFONICA MANQUEHUE
19632 109 14 5 Metropolis Intercom S.A.
13999 107 52 9 Mega Cable S.A. de C.V.
19169 107 7 21 Telconet
10481 101 40 7 Prima S.A.
6503 100 146 72 AVANTEL, S.A.
21826 95 13 20 INTERCABLE
22927 95 73 25 TELEFONICA DE ARGENTINA
5639 94 12 9 Telecommunications Services o
23216 94 24 23 RAMtelecom Telecomunicaciones
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
20928 96 16 2 Noor Advanced Technologies AS
2018 91 295 86 Tertiary Education Network
8452 89 28 6 TEDATA
2905 75 266 67 The Internetworking Company o
6713 59 54 8 Itissalat Al-MAGHRIB
24835 55 34 6 RAYA Telecom - Egypt
9129 45 3 3 UUNET Kenya
12455 40 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 34 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 25 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 19 5 8 MAURITIUS TELECOM
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 1120 903 Time Warner Telecom
18566 820 813 Covad Communications
721 1109 796 DLA Systems Automation Center
9583 762 748 Sify Limited
4134 918 726 CHINANET-BACKBONE
27364 565 547 Armstrong Cable Services
6197 927 498 BellSouth Network Solutions,
4755 630 489 Videsh Sanchar Nigam Ltd. Aut
22773 495 472 Cox Communications, Inc.
7725 487 472 MediaOne
5668 488 463 CenturyTel Internet Holdings,
3602 542 442 Sprint Canada, Inc.
8151 627 440 UniNet S.A. de C.V.
7545 500 429 TPG Internet Pty Ltd
6467 429 395 E.Spire Communications, Inc.
17676 436 361 Softbank BB Corp.
6140 403 330 ImpSat
20115 646 328 Charter Communications
4766 596 317 Korea Telecom (KIX)
9929 356 308 China Netcom Corp.
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.62.0/23 11664 Keytech SA
64512 PRIVATE 200.80.154.0/23 11664 Keytech SA
65313 PRIVATE 203.184.140.0/24 9304 Hutchison Telecom (H
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
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 /8:18 /9:3 /10:8 /11:15 /12:73
/13:159 /14:310 /15:592 /16:8432 /17:2591 /18:4445
/19:10422 /20:11294 /21:9280 /22:12742 /23:13790 /24:90595
/25:346 /26:310 /27:173 /28:44 /29:29 /30:70
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 804 820 Covad Communications
6197 755 927 BellSouth Network Solutions,
7018 690 1492 AT&T WorldNet Services
2386 600 885 AT&T Data Communications Serv
9583 578 762 Sify Limited
27364 556 565 Armstrong Cable Services
4323 541 1120 Time Warner Telecom
7725 458 487 MediaOne
4766 414 596 Korea Telecom (KIX)
5668 402 488 CenturyTel Internet Holdings,
1239 378 889 Sprint
702 369 597 UUNET - Commercial IP service
6198 338 464 BellSouth Network Solutions,
10036 335 345 C&M Communication Co. Ltd.
7011 304 354 Citizens Utilities
8151 300 627 UniNet S.A. de C.V.
6467 296 429 E.Spire Communications, Inc.
15270 284 309 PaeTec.net -a division of Pae
20115 281 646 Charter Communications
9929 275 356 China Netcom Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:15 12:1541 13:1 15:9 16:2
17:3 18:3 20:4 21:1 24:1175 30:2
32:69 33:4 38:131 40:54 44:3 47:2
52:4 55:2 56:3 57:27 58:91 59:47
60:55 61:785 62:626 63:1871 64:2774 65:2083
66:2930 67:590 68:536 69:1052 70:116 71:9
72:236 80:589 81:562 82:431 83:278 84:205
85:258 86:25 128:184 129:172 130:88 131:297
132:38 133:1 134:145 135:39 136:132 137:68
138:168 139:60 140:239 141:102 142:149 143:145
144:191 145:33 146:287 147:108 148:344 149:171
150:106 151:65 152:107 153:87 154:5 155:142
156:78 157:97 158:160 159:172 160:77 161:69
162:328 163:92 164:211 165:179 166:156 167:240
168:426 169:140 170:311 171:8 172:1 192:5726
193:3185 194:2401 195:1553 196:659 198:3925 199:3295
200:4000 201:358 202:5821 203:6344 204:3780 205:2037
206:2532 207:2844 208:2075 209:3327 210:1708 211:844
212:1219 213:1316 214:264 215:31 216:3502 217:1150
218:207 219:131 220:392 221:232 222:111
End of report
