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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 20 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 162607
Prefixes after maximum aggregation: 94532
Unique aggregates announced to Internet: 78525
Total ASes present in the Internet Routing Table: 19681
Origin-only ASes present in the Internet Routing Table: 17125
Origin ASes announcing only one prefix: 8029
Transit ASes present in the Internet Routing Table: 2556
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 27
Prefixes from unregistered ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1407858240
Equivalent to 83 /8s, 234 /16s and 54 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 76377
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33406
Total APNIC prefixes after maximum aggregation: 15686
Prefixes being announced from the APNIC address blocks: 31331
Unique aggregates announced from the APNIC address blocks: 15921
APNIC Region origin ASes present in the Internet Routing Table: 2269
APNIC Region origin ASes announcing only one prefix: 662
APNIC Region transit ASes present in the Internet Routing Table: 341
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 183460992
Equivalent to 10 /8s, 239 /16s and 100 /24s
Percentage of available APNIC address space announced: 68.1
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 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: 88141
Total ARIN prefixes after maximum aggregation: 53721
Prefixes being announced from the ARIN address blocks: 68798
Unique aggregates announced from the ARIN address blocks: 25295
ARIN Region origin ASes present in the Internet Routing Table: 9950
ARIN Region origin ASes announcing only one prefix: 3631
ARIN Region transit ASes present in the Internet Routing Table: 941
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 248377344
Equivalent to 14 /8s, 205 /16s and 240 /24s
Percentage of available ARIN address space announced: 70.5
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, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30753
Total RIPE prefixes after maximum aggregation: 21300
Prefixes being announced from the RIPE address blocks: 27819
Unique aggregates announced from the RIPE address blocks: 18611
RIPE Region origin ASes present in the Internet Routing Table: 6653
RIPE Region origin ASes announcing only one prefix: 3508
RIPE Region transit ASes present in the Internet Routing Table: 1117
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 204798912
Equivalent to 12 /8s, 52 /16s and 251 /24s
Percentage of available RIPE address space announced: 71.8
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: 8696
Total LACNIC prefixes after maximum aggregation: 3054
Prefixes being announced from the LACNIC address blocks: 7104
Unique aggregates announced from the LACNIC address blocks: 4136
LACNIC Region origin ASes present in the Internet Routing Table: 618
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 113
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 27
Number of LACNIC addresses announced to Internet: 18892032
Equivalent to 1 /8s, 32 /16s and 69 /24s
Percentage of available LACNIC address space announced: 56.3
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1599
Total AfriNIC prefixes after maximum aggregation: 771
Prefixes being announced from the AfriNIC address blocks: 986
Unique aggregates announced from the AfriNIC address blocks: 777
AfriNIC Region origin ASes present in the Internet Routing Table: 124
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2277888
Equivalent to 0 /8s, 34 /16s and 194 /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 908 5137 186 CHINANET-BACKBONE
1221 752 1182 543 Telstra Pty Ltd
9583 732 54 77 Sify Limited
4755 598 244 122 Videsh Sanchar Nigam Ltd. Aut
4766 592 3413 279 Korea Telecom (KIX)
7545 496 88 71 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 360 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
10036 321 29 288 C&M Communication Co. Ltd.
17557 313 22 150 Pakistan Telecom
4808 308 249 168 CNCGROUP IP network: China169
7474 307 270 210 SingTel Optus Pty Ltd
9498 291 83 59 BHARTI BT INTERNET LTD.
4802 286 48 164 Wantree Development
17974 260 65 14 PT TELEKOMUNIKASI INDONESIA
703 256 277 211 UUNET - Commercial IP service
18302 255 107 142 SK Global co., Ltd
2764 253 238 198 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1476 6454 952 AT&T WorldNet Services
174 1172 5610 1003 Cogent Communications
721 1111 21755 312 DLA Systems Automation Center
4323 1109 647 217 Time Warner Telecom
701 1008 8217 856 UUNET Technologies, Inc.
6197 908 380 464 BellSouth Network Solutions,
1239 896 2869 651 Sprint
2386 854 532 635 AT&T Data Communications Serv
18566 811 224 7 Covad Communications
209 656 3521 495 Qwest
20115 594 503 312 Charter Communications
3356 579 10834 436 Level 3 Communications, LLC
27364 565 43 18 Armstrong Cable Services
3561 534 2384 419 Savvis
852 531 1095 391 Telus Advanced Communications
3602 523 123 98 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 482 1188 21 Cox Communications, Inc.
6198 465 386 220 BellSouth Network Solutions,
7725 450 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 594 2003 486 UUNET - Commercial IP service
3320 303 3233 237 Deutsche Telekom AG
3301 294 1084 282 TeliaNet Sweden
8220 273 469 267 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 491 226 Song Networks
8708 231 252 214 Romania Data Systems S.A.
1257 200 728 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 165 47 144 Dynamic Network Technologies,
3269 164 1488 69 TELECOM ITALIA
8866 164 21 11 Bulgarian Telecommunication C
5400 161 285 135 BT Ignite European Backbone
719 159 340 101 LANLINK autonomous system
3300 153 184 86 AUCS Communications Services
6830 137 513 27 UPC Distribution Services
25186 136 137 96 France Telecom Transpac's Tra
9051 129 8 35 INCONET Autonomous System
2856 128 2305 116 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 372 598 150 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 217 98 52 Servicios Alestra S.A de C.V
6147 177 102 20 Telefonica Del Peru
11664 157 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 133 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
19632 119 14 5 Metropolis Intercom S.A.
13999 113 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 103 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 100 6 17 Telconet
22927 95 73 23 TELEFONICA DE ARGENTINA
23216 94 24 23 RAMtelecom Telecomunicaciones
21826 92 12 18 INTERCABLE
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 271 637 225 The Internet Solution
5536 119 15 17 Internet Egypt Network
20928 93 16 2 Noor Advanced Technologies AS
2018 90 295 86 Tertiary Education Network
8452 80 28 6 TEDATA
2905 74 266 68 The Internetworking Company o
24835 63 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 32 84 4 Nile Online
6713 31 54 8 Itissalat Al-MAGHRIB
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
21491 17 1 3 UTL On-line is RF broadband I
33765 17 3 8 TANZANIA TELECOMMUNICATIONS C
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1109 892 Time Warner Telecom
18566 811 804 Covad Communications
721 1111 799 DLA Systems Automation Center
4134 908 722 CHINANET-BACKBONE
9583 732 655 Sify Limited
27364 565 547 Armstrong Cable Services
4755 598 476 Videsh Sanchar Nigam Ltd. Aut
5668 487 462 CenturyTel Internet Holdings,
22773 482 461 Cox Communications, Inc.
6197 908 444 BellSouth Network Solutions,
7725 450 435 MediaOne
3602 523 425 Sprint Canada, Inc.
7545 496 425 TPG Internet Pty Ltd
6467 420 385 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 407 330 ImpSat
9929 360 314 China Netcom Corp.
4766 592 313 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
20115 594 282 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
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
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
172.122.28.0/24 210 Utah Education Network
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 /11:15 /12:70
/13:154 /14:306 /15:600 /16:8392 /17:2541 /18:4397
/19:10338 /20:11126 /21:9044 /22:12524 /23:13503 /24:88683
/25:289 /26:245 /27:141 /28:64 /29:38 /30:74
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 795 811 Covad Communications
6197 746 908 BellSouth Network Solutions,
7018 679 1476 AT&T WorldNet Services
2386 604 854 AT&T Data Communications Serv
27364 556 565 Armstrong Cable Services
9583 549 732 Sify Limited
4323 526 1109 Time Warner Telecom
7725 423 450 MediaOne
4766 409 592 Korea Telecom (KIX)
5668 402 487 CenturyTel Internet Holdings,
1239 377 896 Sprint
702 366 594 UUNET - Commercial IP service
6198 340 465 BellSouth Network Solutions,
10036 321 321 C&M Communication Co. Ltd.
6517 299 322 Yipes Communications, Inc.
6467 298 420 E.Spire Communications, Inc.
7011 298 348 Citizens Utilities
9929 281 360 China Netcom Corp.
11456 281 322 Carolina Online, Inc.
15270 263 283 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:13 12:1531 13:1 15:9 16:2
17:3 18:4 20:4 24:1135 30:2 32:69
33:4 38:117 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:88 59:37 60:35
61:799 62:602 63:1872 64:2731 65:2068 66:2874
67:575 68:530 69:1029 70:107 71:7 72:191
80:568 81:544 82:410 83:263 84:179 85:202
86:15 128:149 129:174 130:83 131:280 132:35
133:1 134:151 135:40 136:189 137:64 138:169
139:57 140:191 141:105 142:154 143:145 144:184
145:33 146:281 147:106 148:295 149:165 150:97
151:65 152:106 153:86 154:5 155:143 156:78
157:95 158:161 159:169 160:89 161:72 162:204
163:87 164:207 165:174 166:156 167:233 168:424
169:140 170:320 171:8 172:2 192:5718 193:3142
194:2375 195:1561 196:657 198:3934 199:3282 200:3907
201:134 202:5605 203:6210 204:3832 205:2007 206:2477
207:2793 208:2056 209:3290 210:1685 211:833 212:1155
213:1277 214:265 215:31 216:3432 217:1140 218:200
219:106 220:376 221:217 222:103
End of report
