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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 18 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 162388
Prefixes after maximum aggregation: 94371
Unique aggregates announced to Internet: 78424
Total ASes present in the Internet Routing Table: 19668
Origin-only ASes present in the Internet Routing Table: 17104
Origin ASes announcing only one prefix: 8024
Transit ASes present in the Internet Routing Table: 2564
Transit-only ASes present in the Internet Routing Table: 70
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: 7
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 33
Number of addresses announced to Internet: 1408059904
Equivalent to 83 /8s, 237 /16s and 74 /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: 76262
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33284
Total APNIC prefixes after maximum aggregation: 15644
Prefixes being announced from the APNIC address blocks: 31211
Unique aggregates announced from the APNIC address blocks: 15869
APNIC Region origin ASes present in the Internet Routing Table: 2265
APNIC Region origin ASes announcing only one prefix: 659
APNIC Region transit ASes present in the Internet Routing Table: 341
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 183038848
Equivalent to 10 /8s, 232 /16s and 243 /24s
Percentage of available APNIC address space announced: 67.9
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: 88015
Total ARIN prefixes after maximum aggregation: 53629
Prefixes being announced from the ARIN address blocks: 68677
Unique aggregates announced from the ARIN address blocks: 25255
ARIN Region origin ASes present in the Internet Routing Table: 9945
ARIN Region origin ASes announcing only one prefix: 3627
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: 248247552
Equivalent to 14 /8s, 203 /16s and 245 /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: 30840
Total RIPE prefixes after maximum aggregation: 21294
Prefixes being announced from the RIPE address blocks: 27879
Unique aggregates announced from the RIPE address blocks: 18610
RIPE Region origin ASes present in the Internet Routing Table: 6650
RIPE Region origin ASes announcing only one prefix: 3509
RIPE Region transit ASes present in the Internet Routing Table: 1123
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 204543936
Equivalent to 12 /8s, 49 /16s and 23 /24s
Percentage of available RIPE address space announced: 71.7
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: 8659
Total LACNIC prefixes after maximum aggregation: 3039
Prefixes being announced from the LACNIC address blocks: 7073
Unique aggregates announced from the LACNIC address blocks: 4116
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: 114
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18808512
Equivalent to 1 /8s, 30 /16s and 254 /24s
Percentage of available LACNIC address space announced: 56.1
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: 1578
Total AfriNIC prefixes after maximum aggregation: 765
Prefixes being announced from the AfriNIC address blocks: 971
Unique aggregates announced from the AfriNIC address blocks: 773
AfriNIC Region origin ASes present in the Internet Routing Table: 124
AfriNIC Region origin ASes announcing only one prefix: 36
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2276096
Equivalent to 0 /8s, 34 /16s and 187 /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 906 5137 186 CHINANET-BACKBONE
1221 751 1182 539 Telstra Pty Ltd
9583 736 54 75 Sify Limited
4755 597 244 123 Videsh Sanchar Nigam Ltd. Aut
4766 593 3413 281 Korea Telecom (KIX)
7545 495 88 73 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 312 22 149 Pakistan Telecom
4808 310 251 169 CNCGROUP IP network: China169
7474 306 270 210 SingTel Optus Pty Ltd
9498 296 83 59 BHARTI BT INTERNET LTD.
4802 285 48 165 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 255 277 210 UUNET - Commercial IP service
2764 253 238 198 AAPT Limited
18302 251 75 139 SK Global co., Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1485 6470 954 AT&T WorldNet Services
174 1175 5610 1005 Cogent Communications
721 1111 21755 312 DLA Systems Automation Center
4323 1107 648 218 Time Warner Telecom
701 1007 8233 857 UUNET Technologies, Inc.
6197 907 380 463 BellSouth Network Solutions,
1239 899 2869 651 Sprint
2386 852 533 632 AT&T Data Communications Serv
18566 808 224 7 Covad Communications
209 653 3521 493 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 418 Savvis
852 531 1095 391 Telus Advanced Communications
3602 515 123 99 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 483 1188 21 Cox Communications, Inc.
6198 467 386 220 BellSouth Network Solutions,
7725 450 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 595 2003 487 UUNET - Commercial IP service
3320 303 3233 237 Deutsche Telekom AG
3301 292 1084 281 TeliaNet Sweden
8220 273 469 267 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 491 226 Song Networks
8708 230 252 213 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
25186 138 137 98 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
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 374 598 147 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 217 98 53 Servicios Alestra S.A de C.V
6147 177 102 20 Telefonica Del Peru
11664 156 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 131 90 88 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
19632 119 14 5 Metropolis Intercom S.A.
11556 111 55 7 Cable-Wireless Panama
13999 111 52 9 Mega Cable S.A. de C.V.
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 94 73 23 TELEFONICA DE ARGENTINA
21826 92 12 18 INTERCABLE
23216 90 24 23 RAMtelecom Telecomunicaciones
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 270 637 225 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
2905 74 266 68 The Internetworking Company o
8452 69 28 6 TEDATA
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
6713 35 54 9 Itissalat Al-MAGHRIB
15475 32 84 4 Nile Online
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 1107 889 Time Warner Telecom
18566 808 801 Covad Communications
721 1111 799 DLA Systems Automation Center
4134 906 720 CHINANET-BACKBONE
9583 736 661 Sify Limited
27364 565 547 Armstrong Cable Services
4755 597 474 Videsh Sanchar Nigam Ltd. Aut
5668 487 462 CenturyTel Internet Holdings,
22773 483 462 Cox Communications, Inc.
6197 907 444 BellSouth Network Solutions,
7725 450 435 MediaOne
7545 495 422 TPG Internet Pty Ltd
3602 515 416 Sprint Canada, Inc.
6467 419 384 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 403 322 ImpSat
9929 360 314 China Netcom Corp.
4766 593 312 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
6478 419 290 AT&T Worldnet Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
30634 UNALLOCATED 66.139.232.0/24 7132 SBC Internet Service
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
172.1.0.0/16 12956 Telefonica Data Autonomous Sy
172.2.0.0/16 12956 Telefonica Data Autonomous Sy
172.3.0.0/16 12956 Telefonica Data Autonomous Sy
172.4.0.0/16 12956 Telefonica Data Autonomous Sy
172.5.0.0/16 12956 Telefonica Data Autonomous Sy
172.6.0.0/16 12956 Telefonica Data Autonomous Sy
172.7.0.0/16 12956 Telefonica Data Autonomous Sy
172.8.0.0/16 12956 Telefonica Data Autonomous Sy
172.9.0.0/16 12956 Telefonica Data Autonomous Sy
172.10.0.0/16 12956 Telefonica Data Autonomous Sy
172.11.0.0/16 12956 Telefonica Data Autonomous Sy
172.12.0.0/16 12956 Telefonica Data Autonomous Sy
172.13.0.0/16 12956 Telefonica Data Autonomous Sy
172.14.0.0/16 12956 Telefonica Data Autonomous Sy
172.15.0.0/16 12956 Telefonica Data Autonomous Sy
172.32.0.0/24 7011 Citizens Utilities
172.50.0.0/16 12956 Telefonica Data Autonomous Sy
172.51.0.0/16 12956 Telefonica Data Autonomous Sy
172.52.0.0/16 12956 Telefonica Data Autonomous Sy
172.74.0.0/16 12956 Telefonica Data Autonomous Sy
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
/13:155 /14:307 /15:601 /16:8404 /17:2550 /18:4392
/19:10320 /20:11129 /21:9037 /22:12500 /23:13449 /24:88542
/25:287 /26:246 /27:142 /28:66 /29:38 /30:74
/31:0 /32:34
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 792 808 Covad Communications
6197 745 907 BellSouth Network Solutions,
7018 679 1485 AT&T WorldNet Services
2386 602 852 AT&T Data Communications Serv
27364 556 565 Armstrong Cable Services
9583 552 736 Sify Limited
4323 524 1107 Time Warner Telecom
7725 423 450 MediaOne
4766 410 593 Korea Telecom (KIX)
5668 402 487 CenturyTel Internet Holdings,
1239 377 899 Sprint
702 367 595 UUNET - Commercial IP service
6198 342 467 BellSouth Network Solutions,
10036 321 321 C&M Communication Co. Ltd.
6467 300 419 E.Spire Communications, Inc.
6517 299 322 Yipes Communications, Inc.
7011 297 347 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 12:1534 13:1 15:9 16:2
17:3 18:4 20:4 24:1128 30:2 32:64
33:4 38:115 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:57 59:31 60:34
61:798 62:608 63:1877 64:2721 65:2069 66:2865
67:573 68:530 69:1022 70:106 71:6 72:176
80:562 81:546 82:407 83:269 84:187 85:200
86:12 128:153 129:174 130:83 131:280 132:34
133:1 134:150 135:40 136:189 137:65 138:169
139:57 140:194 141:105 142:154 143:141 144:183
145:33 146:280 147:106 148:294 149:165 150:97
151:65 152:106 153:86 154:5 155:143 156:78
157:93 158:161 159:174 160:86 161:64 162:204
163:85 164:207 165:175 166:157 167:232 168:424
169:140 170:319 171:8 172:2 192:5715 193:3181
194:2367 195:1556 196:652 198:3938 199:3278 200:3900
201:132 202:5591 203:6206 204:3822 205:1996 206:2469
207:2787 208:2049 209:3285 210:1685 211:830 212:1150
213:1288 214:267 215:31 216:3438 217:1142 218:198
219:105 220:374 221:216 222:103
End of report
