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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 10 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 157503
Prefixes after maximum aggregation: 92059
Unique aggregates announced to Internet: 75898
Total ASes present in the Internet Routing Table: 19117
Origin-only ASes present in the Internet Routing Table: 16636
Origin ASes announcing only one prefix: 7759
Transit ASes present in the Internet Routing Table: 2481
Transit-only ASes present in the Internet Routing Table: 80
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 21
Prefixes from unregistered ASNs in the Routing Table: 14
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1382660448
Equivalent to 82 /8s, 105 /16s and 185 /24s
Percentage of available address space announced: 37.3
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 73429
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31564
Total APNIC prefixes after maximum aggregation: 15217
Prefixes being announced from the APNIC address blocks: 29609
Unique aggregates announced from the APNIC address blocks: 15142
APNIC Region origin ASes present in the Internet Routing Table: 2217
APNIC Region origin ASes announcing only one prefix: 648
APNIC Region transit ASes present in the Internet Routing Table: 331
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 176690880
Equivalent to 10 /8s, 136 /16s and 22 /24s
Percentage of available APNIC address space announced: 65.6
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: 87779
Total ARIN prefixes after maximum aggregation: 53140
Prefixes being announced from the ARIN address blocks: 66977
Unique aggregates announced from the ARIN address blocks: 24547
ARIN Region origin ASes present in the Internet Routing Table: 9922
ARIN Region origin ASes announcing only one prefix: 3587
ARIN Region transit ASes present in the Internet Routing Table: 951
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 240781312
Equivalent to 14 /8s, 90 /16s and 8 /24s
Percentage of available ARIN address space announced: 71.8
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: 29906
Total RIPE prefixes after maximum aggregation: 20587
Prefixes being announced from the RIPE address blocks: 26835
Unique aggregates announced from the RIPE address blocks: 17801
RIPE Region origin ASes present in the Internet Routing Table: 6384
RIPE Region origin ASes announcing only one prefix: 3377
RIPE Region transit ASes present in the Internet Routing Table: 1066
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 193746512
Equivalent to 11 /8s, 140 /16s and 86 /24s
Percentage of available RIPE address space announced: 67.9
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: 6879
Total LACNIC prefixes after maximum aggregation: 2405
Prefixes being announced from the LACNIC address blocks: 6838
Unique aggregates announced from the LACNIC address blocks: 4007
LACNIC Region origin ASes present in the Internet Routing Table: 422
LACNIC Region origin ASes announcing only one prefix: 124
LACNIC Region transit ASes present in the Internet Routing Table: 81
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 17677568
Equivalent to 1 /8s, 13 /16s and 189 /24s
Percentage of available LACNIC address space announced: 52.7
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1361
Total AfriNIC prefixes after maximum aggregation: 710
Prefixes being announced from the AfriNIC address blocks: 897
Unique aggregates announced from the AfriNIC address blocks: 722
AfriNIC Region origin ASes present in the Internet Routing Table: 96
AfriNIC Region origin ASes announcing only one prefix: 23
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: 2181632
Equivalent to 0 /8s, 33 /16s and 74 /24s
Percentage of available AfriNIC address space announced: 13.0
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 888 4720 175 Data Communications Bureau
1221 784 1188 556 Telstra Pty Ltd
9583 603 49 21 Satyam Infoway Ltd.,
4766 587 3416 278 Korea Internet Exchange for "
4755 492 241 104 Videsh Sanchar Nigam Ltd. Aut
7545 476 86 69 TPG Internet Pty Ltd
17676 408 6156 73 XTAGE CORPORATION
9443 374 77 79 Primus Telecommunications
9929 362 175 40 China Netcom Corp.
17557 352 25 155 Pakistan Telecom
2907 348 1839 322 SINET Japan
10036 300 27 273 C&M Communication Co. Ltd.
4808 299 245 160 CHINANET core WAN North
7474 288 283 210 Optus Communications Pty Ltd
4802 282 47 166 Wantree Development
703 272 355 214 UUNET
2764 255 237 203 connect.com.au pty ltd
9498 254 82 54 BHARTI BT INTERNET LTD.
9800 238 390 72 CHINA UNICOM
17974 231 54 86 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1466 6563 963 AT&T WorldNet Services
721 1123 21763 314 DLA Systems Automation Center
4323 1051 668 220 Time Warner Telecom
701 1030 8289 875 UUNET Technologies, Inc.
1239 923 2871 657 Sprint
6197 874 382 409 BellSouth Network Solutions,
174 858 5532 748 PSINet Inc.
2386 831 498 614 AT&T Data Communications Serv
18566 773 208 6 Covad Communications
209 639 3482 502 Qwest
20115 582 482 303 Charter Communications
3356 581 10863 431 Level 3 Communications, LLC
3561 560 2373 415 Cable & Wireless USA
852 531 1095 400 Telus Advanced Communications
3602 501 120 93 Sprint Canada, Inc.
6478 500 831 101 AT&T Worldnet Services
22773 478 1090 24 Cox Communications, Inc. Atla
6198 466 540 196 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 457 93 22 Century Telephone
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 607 2006 497 UUNET - Commercial IP service
3320 294 2992 229 Deutsche Telekom AG
3301 290 1112 278 TeliaNet Sweden
8220 277 466 271 COLT Internet - International
680 254 2041 239 DFN-IP service G-WiN
3246 228 472 223 Song Networks
8708 222 121 200 Romania Data Systems S.A.
13083 218 51 8 Mannesmann Datenverarbeitung
3215 208 1058 80 France Telecom Transpac
1257 197 710 174 SWIPnet Swedish IP Network
5515 187 842 135 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
8866 176 20 18 Bulgarian Telecommunication C
9121 172 231 32 TTnet Autonomous System
3269 165 1456 72 TELECOM ITALIA
3300 165 185 85 AUCS Communications Services
6746 162 47 143 Dynamic Network Technologies,
719 158 322 100 LANLINK autonomous system
6830 142 529 28 UPC Distribution Services
25186 142 138 100 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 360 140 70 ImpSat
8151 337 505 142 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 223 99 54 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
11664 148 19 23 Keytech SA
7303 146 66 30 Telecom Argentina Stet-France
6505 136 90 92 Global One Communicaoes Ltda
14117 118 7 5 Telefonica del Sur S.A.
11992 107 9 31 Integrated Systems
6503 104 129 74 AVANTEL, S.A.
13999 99 52 9 Mega Cable S.A. de C.V.
11556 97 48 3 Cable-Wireless Panama
6535 87 7 23 Chilesat Servicios Empresari
11311 87 8 22 Sinectis S.A.
5639 83 12 9 Telecommunications Services o
10481 80 32 7 Prima S.A.
10292 78 6 20 TELECOMMUNICATIONS OF JAMAICA
15311 77 24 36 Telefonica Empresas
4270 76 18 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 114 15 18 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 88 16 2 Noor Advanced Technologies AS
2905 84 267 76 The Internetworking Company o
8452 55 20 5 TEDATA
24835 55 34 6 RAYA Telecom - Egypt
9129 39 3 2 UUNET Kenya
6713 35 54 9 Itissalat Al-MAGHRIB
12455 30 7 4 Jambonet Autonomous system
5713 27 141 24 Telkom SA Ltd
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
12258 18 3 12 Vodacom Internet Company
8346 17 10 11 SONATEL-AS Autonomous System
21491 16 1 3 UTL On-line is RF broadband I
15706 15 4 2 Sudatel Internet Exchange Aut
15808 13 1 5 Communication Solutions Ltd i
17148 13 1 7 First National Bank
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1051 831 Time Warner Telecom
721 1123 809 DLA Systems Automation Center
18566 773 767 Covad Communications
4134 888 713 Data Communications Bureau
9583 603 582 Satyam Infoway Ltd.,
6197 874 465 BellSouth Network Solutions,
22773 478 454 Cox Communications, Inc. Atla
27364 465 447 Armstrong Cable Services
5668 457 435 Century Telephone
3602 501 408 Sprint Canada, Inc.
7545 476 407 TPG Internet Pty Ltd
6478 500 399 AT&T Worldnet Services
4755 492 388 Videsh Sanchar Nigam Ltd. Aut
17676 408 335 XTAGE CORPORATION
6467 359 326 E.Spire Communications, Inc.
9929 362 322 China Netcom Corp.
4766 587 309 Korea Internet Exchange for "
9443 374 295 Primus Telecommunications
6140 360 290 ImpSat
20115 582 279 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
25695 UNALLOCATED 64.57.112.0/20 5713 Telkom SA Ltd
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
40439 UNALLOCATED 66.194.101.0/24 30439 Memphis Daily News
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
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 /12:62
/13:148 /14:306 /15:569 /16:8320 /17:2450 /18:4172
/19:10108 /20:10772 /21:8649 /22:11983 /23:13108 /24:85998
/25:260 /26:253 /27:104 /28:51 /29:24 /30:84
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 758 773 Covad Communications
6197 715 874 BellSouth Network Solutions,
7018 636 1466 AT&T WorldNet Services
2386 587 831 AT&T Data Communications Serv
4323 484 1051 Time Warner Telecom
27364 450 465 Armstrong Cable Services
9583 427 603 Satyam Infoway Ltd.,
4766 403 587 Korea Internet Exchange for "
5668 383 457 Century Telephone
1239 373 923 Sprint
702 369 607 UUNET - Commercial IP service
6198 335 466 BellSouth Network Solutions,
10036 300 300 C&M Communication Co. Ltd.
6517 288 310 Yipes Communications, Inc.
9929 286 362 China Netcom Corp.
6467 270 359 E.Spire Communications, Inc.
11456 263 310 Carolina Online, Inc.
13609 248 291 Choice One Communications Inc
701 247 1030 UUNET Technologies, Inc.
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1500 13:1 15:9 16:2
17:3 18:4 20:5 24:737 32:64 33:5
38:99 40:55 44:3 47:2 52:3 55:2
56:3 57:24 58:3 59:6 60:21 61:730
62:515 63:1878 64:2593 65:2056 66:2709 67:522
68:507 69:921 70:70 71:4 72:90 80:539
81:531 82:336 83:263 84:130 85:163 128:140
129:160 130:87 131:280 132:35 133:1 134:142
135:32 136:188 137:66 138:157 139:50 140:197
141:102 142:139 143:129 144:177 145:45 146:280
147:98 148:272 149:165 150:97 151:63 152:108
153:85 154:3 155:141 156:61 157:85 158:153
159:168 160:72 161:60 162:435 163:86 164:209
165:163 166:129 167:228 168:419 169:133 170:311
171:9 192:5659 193:3125 194:2283 195:1592 196:628
198:3904 199:3304 200:4001 201:55 202:5255 203:6084
204:3700 205:2011 206:2361 207:2741 208:2081 209:3188
210:1604 211:801 212:1173 213:1261 214:243 215:31
216:3666 217:1091 218:193 219:139 220:367 221:100
222:75
End of report
