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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 24 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167184
Prefixes after maximum aggregation: 96462
Unique aggregates announced to Internet: 80857
Total ASes present in the Internet Routing Table: 20108
Origin-only ASes present in the Internet Routing Table: 17524
Origin ASes announcing only one prefix: 8248
Transit ASes present in the Internet Routing Table: 2584
Transit-only ASes present in the Internet Routing Table: 74
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: 1397523413
Equivalent to 83 /8s, 76 /16s and 131 /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: 79336
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34698
Total APNIC prefixes after maximum aggregation: 15932
Prefixes being announced from the APNIC address blocks: 32565
Unique aggregates announced from the APNIC address blocks: 16328
APNIC Region origin ASes present in the Internet Routing Table: 2313
APNIC Region origin ASes announcing only one prefix: 677
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: 191370368
Equivalent to 11 /8s, 104 /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: 89546
Total ARIN prefixes after maximum aggregation: 54598
Prefixes being announced from the ARIN address blocks: 70046
Unique aggregates announced from the ARIN address blocks: 25824
ARIN Region origin ASes present in the Internet Routing Table: 10082
ARIN Region origin ASes announcing only one prefix: 3712
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: 254711573
Equivalent to 15 /8s, 46 /16s and 151 /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: 32165
Total RIPE prefixes after maximum aggregation: 21998
Prefixes being announced from the RIPE address blocks: 29178
Unique aggregates announced from the RIPE address blocks: 19621
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: 1130
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212277056
Equivalent to 12 /8s, 167 /16s and 23 /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: 9104
Total LACNIC prefixes after maximum aggregation: 3156
Prefixes being announced from the LACNIC address blocks: 7471
Unique aggregates announced from the LACNIC address blocks: 4357
LACNIC Region origin ASes present in the Internet Routing Table: 624
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: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 20570368
Equivalent to 1 /8s, 57 /16s and 225 /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: 778
Prefixes being announced from the AfriNIC address blocks: 1008
Unique aggregates announced from the AfriNIC address blocks: 776
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: 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: 2339328
Equivalent to 0 /8s, 35 /16s and 178 /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 961 5568 195 CHINANET-BACKBONE
9583 768 77 14 Sify Limited
1221 756 1455 533 Telstra Pty Ltd
4755 663 248 144 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 314 272 217 SingTel Optus Pty Ltd
17557 296 23 153 Pakistan Telecom
4802 290 50 167 Wantree Development
4808 286 244 168 CNCGROUP IP network: China169
18302 280 117 155 SK Global co., Ltd
9837 279 80 183 Powertel 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 1486 6416 966 AT&T WorldNet Services
4323 1139 672 224 Time Warner Telecom
174 1135 5824 1054 Cogent Communications
721 1077 21778 309 DLA Systems Automation Center
701 1021 8168 864 UUNET Technologies, Inc.
6197 937 522 435 BellSouth Network Solutions,
2386 888 528 655 AT&T Data Communications Serv
1239 873 2886 628 Sprint
18566 832 224 7 Covad Communications
20115 652 499 321 Charter Communications
209 624 3472 491 Qwest
3356 564 10780 432 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 544 123 104 Sprint Canada, Inc.
3561 538 2385 422 Savvis
852 526 1093 385 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 299 1081 285 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 150 272 36 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 141 145 98 France Telecom Transpac's Tra
1273 137 175 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 379 599 159 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
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 50 84 4 Nile Online
9129 42 3 3 UUNET Kenya
5713 36 142 29 Telkom SA Ltd
12455 36 6 3 Jambonet Autonomous system
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
25364 20 1 3 Egypt Cyber Cenyer Network
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
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 1077 768 DLA Systems Automation Center
4134 961 766 CHINANET-BACKBONE
9583 768 754 Sify Limited
27364 554 536 Armstrong Cable Services
4755 663 519 Videsh Sanchar Nigam Ltd. Aut
6197 937 502 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 425 356 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 /15:601 /16:8463 /17:2644 /18:4522
/19:10528 /20:11467 /21:9497 /22:12987 /23:13880 /24:90992
/25:351 /26:294 /27:171 /28:51 /29:28 /30:73
/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 696 1486 AT&T WorldNet Services
2386 601 888 AT&T Data Communications Serv
9583 586 768 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 360 873 Sprint
6198 342 467 BellSouth Network Solutions,
7011 325 376 Citizens Utilities
19916 305 312 OLM LLC
15270 296 321 PaeTec.net -a division of Pae
6517 291 313 Yipes Communications, Inc.
20115 283 652 Charter Communications
6467 279 425 E.Spire Communications, Inc.
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 61:749 62:636 63:1884 64:2803 65:2069
66:2920 67:638 68:556 69:1111 70:147 71:10
72:266 80:590 81:588 82:428 83:294 84:224
85:287 86:62 87:17 128:158 129:167 130:88
131:294 132:38 133:1 134:145 135:42 136:138
137:73 138:164 139:61 140:305 141:105 142:151
143:139 144:205 145:34 146:290 147:110 148:290
149:177 150:107 151:64 152:108 153:88 154:5
155:141 156:78 157:99 158:164 159:165 160:78
161:70 162:218 163:94 164:193 165:186 166:156
167:246 168:434 169:144 170:323 171:8 172:1
190:1 192:5679 193:3226 194:2426 195:1597 196:657
198:3895 199:3289 200:4069 201:208 202:5903 203:6405
204:3798 205:2034 206:2436 207:2792 208:2044 209:3312
210:1699 211:805 212:1258 213:1335 214:273 215:31
216:3597 217:1119 218:210 219:157 220:392 221:248
222:121
End of report
