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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 11 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 157263
Prefixes after maximum aggregation: 92023
Unique aggregates announced to Internet: 75639
Total ASes present in the Internet Routing Table: 19116
Origin-only ASes present in the Internet Routing Table: 16633
Origin ASes announcing only one prefix: 7765
Transit ASes present in the Internet Routing Table: 2483
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: 15
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1382859936
Equivalent to 82 /8s, 108 /16s and 196 /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: 73236
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31515
Total APNIC prefixes after maximum aggregation: 15141
Prefixes being announced from the APNIC address blocks: 29543
Unique aggregates announced from the APNIC address blocks: 15016
APNIC Region origin ASes present in the Internet Routing Table: 2217
APNIC Region origin ASes announcing only one prefix: 649
APNIC Region transit ASes present in the Internet Routing Table: 332
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 176884672
Equivalent to 10 /8s, 139 /16s and 11 /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: 87550
Total ARIN prefixes after maximum aggregation: 53181
Prefixes being announced from the ARIN address blocks: 66988
Unique aggregates announced from the ARIN address blocks: 24530
ARIN Region origin ASes present in the Internet Routing Table: 9922
ARIN Region origin ASes announcing only one prefix: 3590
ARIN Region transit ASes present in the Internet Routing Table: 949
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 240946176
Equivalent to 14 /8s, 92 /16s and 140 /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: 29930
Total RIPE prefixes after maximum aggregation: 20592
Prefixes being announced from the RIPE address blocks: 26870
Unique aggregates announced from the RIPE address blocks: 17831
RIPE Region origin ASes present in the Internet Routing Table: 6384
RIPE Region origin ASes announcing only one prefix: 3379
RIPE Region transit ASes present in the Internet Routing Table: 1068
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 193931600
Equivalent to 11 /8s, 143 /16s and 41 /24s
Percentage of available RIPE address space announced: 68.0
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: 6883
Total LACNIC prefixes after maximum aggregation: 2405
Prefixes being announced from the LACNIC address blocks: 6837
Unique aggregates announced from the LACNIC address blocks: 4014
LACNIC Region origin ASes present in the Internet Routing Table: 423
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: 17649408
Equivalent to 1 /8s, 13 /16s and 79 /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: 1370
Total AfriNIC prefixes after maximum aggregation: 704
Prefixes being announced from the AfriNIC address blocks: 898
Unique aggregates announced from the AfriNIC address blocks: 720
AfriNIC Region origin ASes present in the Internet Routing Table: 95
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: 2181120
Equivalent to 0 /8s, 33 /16s and 72 /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 606 49 23 Satyam Infoway Ltd.,
4766 587 3416 278 Korea Internet Exchange for "
4755 476 240 91 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 358 175 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 281 47 167 Wantree Development
703 262 332 218 UUNET
2764 255 237 203 connect.com.au pty ltd
9498 254 82 54 BHARTI BT INTERNET LTD.
9800 239 390 73 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 1468 6563 965 AT&T WorldNet Services
721 1121 21763 314 DLA Systems Automation Center
4323 1051 668 220 Time Warner Telecom
701 1030 8273 875 UUNET Technologies, Inc.
1239 910 2872 660 Sprint
174 874 5537 757 PSINet Inc.
6197 874 382 409 BellSouth Network Solutions,
2386 831 498 614 AT&T Data Communications Serv
18566 774 208 6 Covad Communications
209 639 3482 502 Qwest
20115 582 482 303 Charter Communications
3356 581 10863 431 Level 3 Communications, LLC
3561 559 2373 414 Cable & Wireless USA
852 531 1095 400 Telus Advanced Communications
6478 504 833 105 AT&T Worldnet Services
3602 501 120 93 Sprint Canada, Inc.
22773 478 1090 24 Cox Communications, Inc. Atla
6198 466 540 196 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 459 115 17 Century Telephone
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 608 2006 498 UUNET - Commercial IP service
3320 294 2992 229 Deutsche Telekom AG
3301 291 1112 279 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
9121 183 234 35 TTnet Autonomous System
786 176 1794 176 The JANET IP Service
8866 176 20 18 Bulgarian Telecommunication C
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
5400 142 282 126 BT Ignite European Backbone
6830 142 529 28 UPC Distribution Services
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 361 140 71 ImpSat
8151 322 492 142 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 114 10 33 Integrated Systems
6503 101 129 72 AVANTEL, S.A.
13999 99 52 9 Mega Cable S.A. de C.V.
11556 98 49 4 Cable-Wireless Panama
11311 88 8 23 Sinectis S.A.
6535 87 7 23 Chilesat Servicios Empresari
5639 83 12 9 Telecommunications Services o
10481 80 32 7 Prima S.A.
10292 79 6 18 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
15475 17 84 4 Nile Online
15808 16 1 1 Communication Solutions Ltd i
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
4323 1051 831 Time Warner Telecom
721 1121 807 DLA Systems Automation Center
18566 774 768 Covad Communications
4134 888 713 Data Communications Bureau
9583 606 583 Satyam Infoway Ltd.,
6197 874 465 BellSouth Network Solutions,
22773 478 454 Cox Communications, Inc. Atla
27364 465 447 Armstrong Cable Services
5668 459 442 Century Telephone
3602 501 408 Sprint Canada, Inc.
7545 476 407 TPG Internet Pty Ltd
6478 504 399 AT&T Worldnet Services
4755 476 385 Videsh Sanchar Nigam Ltd. Aut
17676 408 335 XTAGE CORPORATION
6467 359 326 E.Spire Communications, Inc.
9929 358 318 China Netcom Corp.
4766 587 309 Korea Internet Exchange for "
9443 374 295 Primus Telecommunications
6140 361 290 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
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
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 /15:570 /16:8321 /17:2452 /18:4164
/19:10101 /20:10765 /21:8666 /22:11976 /23:13110 /24:85771
/25:261 /26:244 /27:104 /28:51 /29:25 /30:84
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 759 774 Covad Communications
6197 715 874 BellSouth Network Solutions,
7018 638 1468 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 430 606 Satyam Infoway Ltd.,
4766 403 587 Korea Internet Exchange for "
5668 383 459 Century Telephone
1239 374 910 Sprint
702 370 608 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 282 358 China Netcom Corp.
6467 270 359 E.Spire Communications, Inc.
11456 263 310 Carolina Online, Inc.
701 247 1030 UUNET Technologies, Inc.
13609 247 291 Choice One Communications Inc
15270 243 262 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1503 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 58:4 59:6 60:21 61:718
62:514 63:1879 64:2593 65:2058 66:2711 67:522
68:507 69:921 70:70 71:3 72:90 80:538
81:533 82:337 83:264 84:131 85:155 128:147
129:160 130:89 131:280 132:35 133:1 134:142
135:32 136:190 137:66 138:157 139:50 140:198
141:102 142:141 143:129 144:175 145:45 146:280
147:98 148:270 149:164 150:97 151:63 152:110
153:85 154:3 155:141 156:69 157:85 158:154
159:168 160:72 161:60 162:209 163:86 164:213
165:165 166:129 167:228 168:403 169:133 170:311
171:9 192:5660 193:3126 194:2285 195:1589 196:629
198:3908 199:3305 200:4002 201:55 202:5254 203:6050
204:3700 205:2014 206:2363 207:2735 208:2082 209:3201
210:1608 211:801 212:1171 213:1263 214:243 215:31
216:3659 217:1101 218:193 219:139 220:370 221:101
222:76
End of report
