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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 01 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 156734
Prefixes after maximum aggregation: 91794
Unique aggregates announced to Internet: 75896
Total ASes present in the Internet Routing Table: 19039
Origin-only ASes present in the Internet Routing Table: 16562
Origin ASes announcing only one prefix: 7722
Transit ASes present in the Internet Routing Table: 2477
Transit-only ASes present in the Internet Routing Table: 81
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: 12
Number of addresses announced to Internet: 1380281568
Equivalent to 82 /8s, 69 /16s and 108 /24s
Percentage of available address space announced: 37.2
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 72909
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31272
Total APNIC prefixes after maximum aggregation: 15149
Prefixes being announced from the APNIC address blocks: 29299
Unique aggregates announced from the APNIC address blocks: 15284
APNIC Region origin ASes present in the Internet Routing Table: 2215
APNIC Region origin ASes announcing only one prefix: 652
APNIC Region transit ASes present in the Internet Routing Table: 324
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 175444352
Equivalent to 10 /8s, 117 /16s and 17 /24s
Percentage of available APNIC address space announced: 65.1
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: 87417
Total ARIN prefixes after maximum aggregation: 52975
Prefixes being announced from the ARIN address blocks: 66727
Unique aggregates announced from the ARIN address blocks: 24415
ARIN Region origin ASes present in the Internet Routing Table: 9892
ARIN Region origin ASes announcing only one prefix: 3572
ARIN Region transit ASes present in the Internet Routing Table: 947
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 239945728
Equivalent to 14 /8s, 77 /16s and 72 /24s
Percentage of available ARIN address space announced: 71.5
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: 29780
Total RIPE prefixes after maximum aggregation: 20553
Prefixes being announced from the RIPE address blocks: 26678
Unique aggregates announced from the RIPE address blocks: 17765
RIPE Region origin ASes present in the Internet Routing Table: 6339
RIPE Region origin ASes announcing only one prefix: 3349
RIPE Region transit ASes present in the Internet Routing Table: 1075
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 193143120
Equivalent to 11 /8s, 131 /16s and 33 /24s
Percentage of available RIPE address space announced: 67.7
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, 33792-34815
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: 6878
Total LACNIC prefixes after maximum aggregation: 2407
Prefixes being announced from the LACNIC address blocks: 6797
Unique aggregates announced from the LACNIC address blocks: 4011
LACNIC Region origin ASes present in the Internet Routing Table: 420
LACNIC Region origin ASes announcing only one prefix: 125
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: 17648384
Equivalent to 1 /8s, 13 /16s and 75 /24s
Percentage of available LACNIC address space announced: 52.6
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1380
Total AfriNIC prefixes after maximum aggregation: 710
Prefixes being announced from the AfriNIC address blocks: 911
Unique aggregates announced from the AfriNIC address blocks: 716
AfriNIC Region origin ASes present in the Internet Routing Table: 96
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: 2177280
Equivalent to 0 /8s, 33 /16s and 57 /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 886 4712 174 Data Communications Bureau
1221 789 1188 562 Telstra Pty Ltd
9583 606 49 18 Satyam Infoway Ltd.,
4766 587 3416 281 Korea Internet Exchange for "
4755 470 241 101 Videsh Sanchar Nigam Ltd. Aut
7545 463 74 158 TPG Internet Pty Ltd
17676 403 6060 70 XTAGE CORPORATION
9443 374 77 79 Primus Telecommunications
9929 353 165 37 China Netcom Corp.
2907 349 1839 323 SINET Japan
17557 324 24 149 Pakistan Telecom
10036 297 27 270 C&M Communication Co. Ltd.
7474 285 283 207 Optus Communications Pty Ltd
703 272 355 214 UUNET
2764 258 238 206 connect.com.au pty ltd
9498 245 81 53 BHARTI BT INTERNET LTD.
9800 240 395 71 CHINA UNICOM
4808 238 170 129 CHINANET core WAN North
4802 231 28 140 Wantree Development
17974 231 63 24 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1477 6610 972 AT&T WorldNet Services
721 1168 21835 318 DLA Systems Automation Center
4323 1035 668 221 Time Warner Telecom
701 1029 8307 873 UUNET Technologies, Inc.
1239 928 2872 659 Sprint
6197 869 379 407 BellSouth Network Solutions,
2386 819 497 608 AT&T Data Communications Serv
18566 767 208 6 Covad Communications
174 733 5522 637 PSINet Inc.
209 653 3466 502 Qwest
3356 591 10867 442 Level 3 Communications, LLC
20115 573 474 300 Charter Communications
3561 561 2374 416 Cable & Wireless USA
852 527 1126 399 Telus Advanced Communications
3602 501 120 93 Sprint Canada, Inc.
6478 498 830 104 AT&T Worldnet Services
22773 475 1090 24 Cox Communications, Inc. Atla
6198 467 567 189 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 451 91 20 Century Telephone
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 609 2006 500 UUNET - Commercial IP service
3320 296 2992 230 Deutsche Telekom AG
3301 290 1112 278 TeliaNet Sweden
8220 277 466 271 COLT Internet - International
680 253 2041 239 DFN-IP service G-WiN
3246 226 472 220 Song Networks
8708 221 120 199 Romania Data Systems S.A.
13083 217 51 8 Mannesmann Datenverarbeitung
1257 207 708 173 SWIPnet Swedish IP Network
3215 204 1034 78 France Telecom Transpac
5515 187 842 135 Sonera Solution Autonomous Sy
6746 178 47 142 Dynamic Network Technologies,
786 176 1794 176 The JANET IP Service
8866 176 20 16 Bulgarian Telecommunication C
3300 164 185 84 AUCS Communications Services
3269 163 1424 72 TELECOM ITALIA
719 161 322 103 LANLINK autonomous system
9121 146 227 21 TTnet Autonomous System
25186 142 138 100 France Telecom Transpac's Tra
5400 139 234 123 BT Ignite European Backbone
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 361 140 70 ImpSat
8151 336 501 143 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 220 99 54 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
11664 150 19 24 Keytech SA
7303 146 66 30 Telecom Argentina Stet-France
6505 134 90 90 Global One Communicaoes Ltda
14117 119 7 5 Telefonica del Sur S.A.
6503 113 145 75 AVANTEL, S.A.
11992 107 9 31 Integrated Systems
11556 97 48 3 Cable-Wireless Panama
13999 89 52 9 Mega Cable S.A. de C.V.
11311 88 8 23 Sinectis S.A.
6535 87 7 23 Chilesat Servicios Empresari
14420 87 6 42 ANDINATEL S.A.
5639 83 12 9 Telecommunications Services o
10481 81 32 7 Prima S.A.
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 86 16 2 Noor Advanced Technologies AS
2905 84 267 76 The Internetworking Company o
8452 53 20 5 TEDATA
24835 53 34 6 RAYA Telecom - Egypt
11845 42 9 11 Data Pro Business Online
6713 35 54 9 Itissalat Al-MAGHRIB
9129 31 3 2 UUNET Kenya
12455 30 6 7 Jambonet Autonomous system
5713 27 141 24 Telkom SA Ltd
8524 23 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
21280 17 2 3 Swift Global Kenya Ltd.Is an
21491 16 1 3 UTL On-line is RF broadband I
15706 15 4 2 Sudatel Internet Exchange Aut
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
721 1168 850 DLA Systems Automation Center
4323 1035 814 Time Warner Telecom
18566 767 761 Covad Communications
4134 886 712 Data Communications Bureau
9583 606 588 Satyam Infoway Ltd.,
6197 869 462 BellSouth Network Solutions,
22773 475 451 Cox Communications, Inc. Atla
27364 465 447 Armstrong Cable Services
5668 451 431 Century Telephone
3602 501 408 Sprint Canada, Inc.
6478 498 394 AT&T Worldnet Services
4755 470 369 Videsh Sanchar Nigam Ltd. Aut
17676 403 333 XTAGE CORPORATION
6467 360 327 E.Spire Communications, Inc.
9929 353 316 China Netcom Corp.
4766 587 306 Korea Internet Exchange for "
7545 463 305 TPG Internet Pty Ltd
9443 374 295 Primus Telecommunications
6140 361 291 ImpSat
6198 467 278 BellSouth Network Solutions,
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
65535 PRIVATE 204.10.155.0/24 33205 KMC Telecom Solution
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 /15:566 /16:8291 /17:2425 /18:4139
/19:10096 /20:10733 /21:8566 /22:11881 /23:13065 /24:85601
/25:266 /26:242 /27:108 /28:49 /29:24 /30:82
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 752 767 Covad Communications
6197 712 869 BellSouth Network Solutions,
7018 635 1477 AT&T WorldNet Services
2386 583 819 AT&T Data Communications Serv
4323 482 1035 Time Warner Telecom
27364 450 465 Armstrong Cable Services
9583 429 606 Satyam Infoway Ltd.,
4766 402 587 Korea Internet Exchange for "
5668 381 451 Century Telephone
702 371 609 UUNET - Commercial IP service
1239 371 928 Sprint
6198 334 467 BellSouth Network Solutions,
10036 297 297 C&M Communication Co. Ltd.
6517 287 309 Yipes Communications, Inc.
9929 278 353 China Netcom Corp.
6467 272 360 E.Spire Communications, Inc.
11456 263 310 Carolina Online, Inc.
13609 257 306 Choice One Communications Inc
701 247 1029 UUNET Technologies, Inc.
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:9 12:1489 13:1 15:9 16:2
17:3 18:4 20:5 24:736 32:64 33:4
38:98 40:55 44:3 47:2 52:3 55:2
56:3 57:23 58:1 59:3 60:21 61:708
62:528 63:1863 64:2561 65:2052 66:2710 67:521
68:503 69:890 70:65 71:10 72:73 80:545
81:519 82:331 83:270 84:130 85:138 128:137
129:162 130:94 131:279 132:36 133:1 134:142
135:30 136:191 137:65 138:159 139:53 140:198
141:101 142:140 143:129 144:171 145:44 146:278
147:100 148:267 149:164 150:95 151:63 152:110
153:85 154:3 155:143 156:71 157:81 158:152
159:166 160:67 161:59 162:420 163:85 164:216
165:164 166:129 167:226 168:401 169:133 170:310
171:9 192:5673 193:3115 194:2278 195:1588 196:639
198:3911 199:3326 200:3978 201:52 202:5197 203:6045
204:3703 205:2018 206:2348 207:2725 208:2094 209:3175
210:1584 211:798 212:1174 213:1268 214:242 215:31
216:3652 217:1075 218:190 219:104 220:367 221:89
222:72
End of report
