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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 31 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 158833
Prefixes after maximum aggregation: 92581
Unique aggregates announced to Internet: 76258
Total ASes present in the Internet Routing Table: 19259
Origin-only ASes present in the Internet Routing Table: 16770
Origin ASes announcing only one prefix: 7817
Transit ASes present in the Internet Routing Table: 2489
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 28
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1390523416
Equivalent to 82 /8s, 225 /16s and 180 /24s
Percentage of available address space announced: 37.5
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 74001
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32246
Total APNIC prefixes after maximum aggregation: 15322
Prefixes being announced from the APNIC address blocks: 30160
Unique aggregates announced from the APNIC address blocks: 15320
APNIC Region origin ASes present in the Internet Routing Table: 2232
APNIC Region origin ASes announcing only one prefix: 649
APNIC Region transit ASes present in the Internet Routing Table: 334
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 179946368
Equivalent to 10 /8s, 185 /16s and 195 /24s
Percentage of available APNIC address space announced: 66.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
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: 86569
Total ARIN prefixes after maximum aggregation: 52765
Prefixes being announced from the ARIN address blocks: 67539
Unique aggregates announced from the ARIN address blocks: 24625
ARIN Region origin ASes present in the Internet Routing Table: 9791
ARIN Region origin ASes announcing only one prefix: 3551
ARIN Region transit ASes present in the Internet Routing Table: 923
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 243172352
Equivalent to 14 /8s, 126 /16s and 132 /24s
Percentage of available ARIN address space announced: 72.5
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30080
Total RIPE prefixes after maximum aggregation: 20784
Prefixes being announced from the RIPE address blocks: 27155
Unique aggregates announced from the RIPE address blocks: 18040
RIPE Region origin ASes present in the Internet Routing Table: 6469
RIPE Region origin ASes announcing only one prefix: 3405
RIPE Region transit ASes present in the Internet Routing Table: 1082
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 196565444
Equivalent to 11 /8s, 183 /16s and 89 /24s
Percentage of available RIPE address space announced: 68.9
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
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: 8510
Total LACNIC prefixes after maximum aggregation: 3007
Prefixes being announced from the LACNIC address blocks: 6936
Unique aggregates announced from the LACNIC address blocks: 4009
LACNIC Region origin ASes present in the Internet Routing Table: 606
LACNIC Region origin ASes announcing only one prefix: 188
LACNIC Region transit ASes present in the Internet Routing Table: 108
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 17954304
Equivalent to 1 /8s, 17 /16s and 246 /24s
Percentage of available LACNIC address space announced: 53.5
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1395
Total AfriNIC prefixes after maximum aggregation: 703
Prefixes being announced from the AfriNIC address blocks: 902
Unique aggregates announced from the AfriNIC address blocks: 725
AfriNIC Region origin ASes present in the Internet Routing Table: 98
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2191360
Equivalent to 0 /8s, 33 /16s and 112 /24s
Percentage of available AfriNIC address space announced: 13.1
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 896 4827 180 CHINANET-BACKBONE
1221 788 1193 560 Telstra Pty Ltd
9583 649 51 40 Sify Limited
4766 585 3415 275 Korea Telecom (KIX)
4755 515 243 112 Videsh Sanchar Nigam Ltd. Aut
7545 486 86 71 TPG Internet Pty Ltd
17676 426 6444 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 358 175 45 China Netcom Corp.
2907 344 1823 319 SINET Japan
17557 337 24 158 Pakistan Telecom
10036 306 28 279 C&M Communication Co. Ltd.
4808 302 248 163 CNCGROUP IP network: China169
7474 291 268 211 SingTel Optus Pty Ltd
4802 282 47 167 Wantree Development
9498 263 81 52 BHARTI BT INTERNET LTD.
2764 255 238 203 AAPT Limited
703 253 279 208 UUNET - Commercial IP service
9800 235 386 69 CHINA UNICOM
17974 235 63 12 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1480 6562 969 AT&T WorldNet Services
721 1118 21763 314 DLA Systems Automation Center
4323 1092 663 222 Time Warner Telecom
701 1018 8283 867 UUNET Technologies, Inc.
174 973 5576 829 Cogent Communications
1239 910 2865 659 Sprint
6197 882 383 413 BellSouth Network Solutions,
2386 835 500 617 AT&T Data Communications Serv
18566 780 208 6 Covad Communications
209 646 3475 501 Qwest
20115 595 494 308 Charter Communications
3356 583 10852 431 Level 3 Communications, LLC
3561 539 2370 415 Savvis
852 538 1095 397 Telus Advanced Communications
3602 507 121 93 Sprint Canada, Inc.
6478 505 833 114 AT&T Worldnet Services
5668 475 115 27 CenturyTel Internet Holdings,
22773 475 1188 21 Cox Communications, Inc.
6198 470 567 191 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 588 2002 479 UUNET - Commercial IP service
3320 298 2992 233 Deutsche Telekom AG
3301 297 1117 287 TeliaNet Sweden
8220 277 466 271 COLT Telecommunications
680 254 2041 239 DFN-IP service G-WiN
3246 231 475 225 Song Networks
8708 226 251 205 Romania Data Systems S.A.
9121 210 242 49 TTnet Autonomous System
1257 201 712 177 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 166 1456 72 TELECOM ITALIA
8866 165 21 12 Bulgarian Telecommunication C
6746 161 47 141 Dynamic Network Technologies,
719 158 322 99 LANLINK autonomous system
3300 153 184 86 AUCS Communications Services
6830 143 529 28 UPC Distribution Services
5400 142 281 124 BT Ignite European Backbone
25186 142 138 100 France Telecom Transpac's Tra
9051 127 8 37 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 345 505 142 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 214 99 52 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
19632 191 14 7 Metropolis Intercom S.A.
11664 149 19 23 Keytech SA
7303 148 67 28 Telecom Argentina Stet-France
6505 132 90 88 Global One Communicaoes Ltda
14117 119 8 4 Telefonica del Sur S.A.
22047 116 96 6 VTR PUNTO NET S.A.
6503 104 145 74 AVANTEL, S.A.
18822 102 6 14 TELEFONICA MANQUEHUE
13999 99 52 9 Mega Cable S.A. de C.V.
11556 98 49 4 Cable-Wireless Panama
19169 93 6 16 Telconet
6535 87 7 23 Chilesat Servicios Empresari
23216 87 24 24 RAMtelecom Telecomunicaciones
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
10481 80 32 7 Prima S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 116 15 19 Internet Egypt Network
20928 91 16 2 Noor Advanced Technologies AS
2018 90 295 87 Tertiary Education Network
2905 74 266 68 The Internetworking Company o
8452 58 20 5 TEDATA
24835 57 34 6 RAYA Telecom - Egypt
12455 41 7 4 Jambonet Autonomous system
9129 40 3 2 UUNET Kenya
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 18 3 5 LIA Internet Access
12258 18 3 12 Vodacom Internet Company
21280 18 2 3 Swift Global Kenya Ltd.Is an
15475 16 84 4 Nile Online
15808 16 1 1 Communication Solutions Ltd i
21491 16 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1092 870 Time Warner Telecom
721 1118 804 DLA Systems Automation Center
18566 780 774 Covad Communications
4134 896 716 CHINANET-BACKBONE
9583 649 609 Sify Limited
6197 882 469 BellSouth Network Solutions,
22773 475 454 Cox Communications, Inc.
5668 475 448 CenturyTel Internet Holdings,
27364 465 447 Armstrong Cable Services
7545 486 415 TPG Internet Pty Ltd
3602 507 414 Sprint Canada, Inc.
4755 515 403 Videsh Sanchar Nigam Ltd. Aut
6478 505 391 AT&T Worldnet Services
6467 423 388 E.Spire Communications, Inc.
17676 426 353 Softbank BB Corp.
6140 384 313 ImpSat
9929 358 313 China Netcom Corp.
4766 585 310 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65535 PRIVATE 64.111.161.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.162.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.163.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.164.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.165.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.166.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.167.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.168.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.169.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.170.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.171.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.172.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.173.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.174.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.175.0/24 33205 KMC Telecom Solution
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
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
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
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 /11:14 /12:64
/13:150 /14:308 /15:580 /16:8327 /17:2504 /18:4291
/19:10135 /20:10888 /21:8724 /22:12116 /23:13158 /24:86645
/25:281 /26:268 /27:133 /28:59 /29:25 /30:90
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 765 780 Covad Communications
6197 723 882 BellSouth Network Solutions,
7018 654 1480 AT&T WorldNet Services
2386 589 835 AT&T Data Communications Serv
4323 505 1092 Time Warner Telecom
9583 471 649 Sify Limited
27364 450 465 Armstrong Cable Services
4766 401 585 Korea Telecom (KIX)
5668 400 475 CenturyTel Internet Holdings,
1239 376 910 Sprint
702 352 588 UUNET - Commercial IP service
6198 337 470 BellSouth Network Solutions,
6467 314 423 E.Spire Communications, Inc.
10036 306 306 C&M Communication Co. Ltd.
6517 289 311 Yipes Communications, Inc.
9929 282 358 China Netcom Corp.
7011 280 329 Citizens Utilities
11456 264 311 Carolina Online, Inc.
15270 249 268 PaeTec.net -a division of Pae
13609 247 292 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:12 12:1511 13:1 15:9 16:2
17:3 18:4 20:4 24:745 32:64 33:4
38:102 40:55 44:3 47:2 52:3 55:2
56:3 57:23 58:5 59:12 60:25 61:739
62:549 63:1877 64:2646 65:2078 66:2734 67:510
68:508 69:961 70:76 71:4 72:119 80:537
81:491 82:385 83:258 84:129 85:173 128:141
129:159 130:90 131:280 132:35 133:1 134:144
135:40 136:190 137:66 138:159 139:51 140:192
141:105 142:137 143:130 144:171 145:32 146:280
147:101 148:294 149:167 150:97 151:63 152:107
153:87 154:4 155:143 156:68 157:86 158:167
159:168 160:72 161:60 162:187 163:84 164:214
165:161 166:152 167:230 168:418 169:135 170:311
171:8 172:1 192:5661 193:3107 194:2316 195:1531
196:628 198:3915 199:3273 200:4072 201:60 202:5376
203:6136 204:3777 205:2056 206:2400 207:2722 208:2071
209:3256 210:1652 211:827 212:1184 213:1273 214:243
215:31 216:3695 217:1148 218:190 219:103 220:373
221:136 222:73
End of report
