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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 10 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 161678
Prefixes after maximum aggregation: 94010
Unique aggregates announced to Internet: 77973
Total ASes present in the Internet Routing Table: 19604
Origin-only ASes present in the Internet Routing Table: 17057
Origin ASes announcing only one prefix: 8002
Transit ASes present in the Internet Routing Table: 2547
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: 11
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 33
Number of addresses announced to Internet: 1407299136
Equivalent to 83 /8s, 225 /16s and 174 /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: 75799
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33132
Total APNIC prefixes after maximum aggregation: 15571
Prefixes being announced from the APNIC address blocks: 31007
Unique aggregates announced from the APNIC address blocks: 15715
APNIC Region origin ASes present in the Internet Routing Table: 2261
APNIC Region origin ASes announcing only one prefix: 661
APNIC Region transit ASes present in the Internet Routing Table: 340
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 182737536
Equivalent to 10 /8s, 228 /16s and 90 /24s
Percentage of available APNIC address space announced: 67.8
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: 87597
Total ARIN prefixes after maximum aggregation: 53446
Prefixes being announced from the ARIN address blocks: 68435
Unique aggregates announced from the ARIN address blocks: 25134
ARIN Region origin ASes present in the Internet Routing Table: 9913
ARIN Region origin ASes announcing only one prefix: 3608
ARIN Region transit ASes present in the Internet Routing Table: 934
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 247801344
Equivalent to 14 /8s, 197 /16s and 38 /24s
Percentage of available ARIN address space announced: 70.3
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: 30723
Total RIPE prefixes after maximum aggregation: 21208
Prefixes being announced from the RIPE address blocks: 27745
Unique aggregates announced from the RIPE address blocks: 18500
RIPE Region origin ASes present in the Internet Routing Table: 6626
RIPE Region origin ASes announcing only one prefix: 3504
RIPE Region transit ASes present in the Internet Routing Table: 1112
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 204485056
Equivalent to 12 /8s, 48 /16s and 49 /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: 8649
Total LACNIC prefixes after maximum aggregation: 3023
Prefixes being announced from the LACNIC address blocks: 7068
Unique aggregates announced from the LACNIC address blocks: 4086
LACNIC Region origin ASes present in the Internet Routing Table: 615
LACNIC Region origin ASes announcing only one prefix: 194
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: 18605568
Equivalent to 1 /8s, 27 /16s and 230 /24s
Percentage of available LACNIC address space announced: 55.4
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: 1560
Total AfriNIC prefixes after maximum aggregation: 762
Prefixes being announced from the AfriNIC address blocks: 956
Unique aggregates announced from the AfriNIC address blocks: 765
AfriNIC Region origin ASes present in the Internet Routing Table: 122
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: 13
Number of AfriNIC addresses announced to Internet: 2243328
Equivalent to 0 /8s, 34 /16s and 59 /24s
Percentage of available AfriNIC address space announced: 6.7
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 5139 186 CHINANET-BACKBONE
1221 775 1189 550 Telstra Pty Ltd
9583 736 54 73 Sify Limited
4755 591 244 122 Videsh Sanchar Nigam Ltd. Aut
4766 588 3412 277 Korea Telecom (KIX)
7545 494 86 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
17557 318 23 153 Pakistan Telecom
10036 314 29 285 C&M Communication Co. Ltd.
4808 309 251 169 CNCGROUP IP network: China169
7474 301 268 210 SingTel Optus Pty Ltd
9498 294 83 59 BHARTI BT INTERNET LTD.
4802 279 47 165 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 257 279 212 UUNET - Commercial IP service
2764 252 238 197 AAPT Limited
9800 238 386 69 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1470 6500 948 AT&T WorldNet Services
174 1178 5612 1009 Cogent Communications
721 1116 21763 313 DLA Systems Automation Center
4323 1103 664 220 Time Warner Telecom
701 1007 8250 857 UUNET Technologies, Inc.
6197 904 386 456 BellSouth Network Solutions,
1239 900 2869 651 Sprint
2386 853 533 633 AT&T Data Communications Serv
18566 805 224 7 Covad Communications
209 651 3520 492 Qwest
20115 595 504 310 Charter Communications
3356 585 10835 440 Level 3 Communications, LLC
27364 539 43 18 Armstrong Cable Services
3561 535 2400 418 Savvis
852 530 1095 390 Telus Advanced Communications
3602 509 122 96 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 483 1188 21 Cox Communications, Inc.
6198 465 382 219 BellSouth Network Solutions,
7132 442 8798 378 SBC Internet Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 2002 485 UUNET - Commercial IP service
3320 304 3249 238 Deutsche Telekom AG
3301 291 1084 281 TeliaNet Sweden
8220 274 469 268 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 233 491 228 Song Networks
8708 227 252 211 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
3269 164 1488 69 TELECOM ITALIA
6746 164 47 143 Dynamic Network Technologies,
8866 163 21 12 Bulgarian Telecommunication C
719 159 340 101 LANLINK autonomous system
3300 154 184 87 AUCS Communications Services
5400 145 284 129 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
2856 129 2305 116 BTnet UK Regional network
9051 128 8 34 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 372 597 146 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 224 99 54 Servicios Alestra S.A de C.V
6147 197 102 20 Telefonica Del Peru
11664 155 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 135 8 4 Telefonica del Sur S.A.
22047 132 96 6 VTR PUNTO NET S.A.
6505 130 90 87 Global One Communicaoes Ltda
13999 112 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 102 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 99 6 16 Telconet
19632 93 14 5 Metropolis Intercom S.A.
22927 92 65 22 TELEFONICA DE ARGENTINA
21826 91 12 19 INTERCABLE
11311 89 8 18 Sinectis S.A.
23216 89 24 23 RAMtelecom Telecomunicaciones
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
2018 91 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 75 267 69 The Internetworking Company o
8452 64 20 5 TEDATA
24835 64 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
15706 31 8 3 Sudatel Internet Exchange Aut
8524 25 1 4 AUCEGYPT Autonomous System
15475 24 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
33765 19 3 8 TANZANIA TELECOMMUNICATIONS C
2609 17 26 3 Tunisia BackBone AS
7460 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1103 883 Time Warner Telecom
721 1116 803 DLA Systems Automation Center
18566 805 798 Covad Communications
4134 906 720 CHINANET-BACKBONE
9583 736 663 Sify Limited
27364 539 521 Armstrong Cable Services
4755 591 469 Videsh Sanchar Nigam Ltd. Aut
5668 487 462 CenturyTel Internet Holdings,
22773 483 462 Cox Communications, Inc.
6197 904 448 BellSouth Network Solutions,
7545 494 423 TPG Internet Pty Ltd
3602 509 413 Sprint Canada, Inc.
7725 410 395 MediaOne
6467 429 394 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 399 326 ImpSat
9929 360 314 China Netcom Corp.
4766 588 311 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
6478 416 293 AT&T Worldnet Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
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 /14:306 /15:583 /16:8403 /17:2541 /18:4367
/19:10304 /20:11102 /21:9001 /22:12418 /23:13378 /24:88133
/25:276 /26:244 /27:138 /28:76 /29:38 /30:70
/31:0 /32:30
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 789 805 Covad Communications
6197 743 904 BellSouth Network Solutions,
7018 672 1470 AT&T WorldNet Services
2386 603 853 AT&T Data Communications Serv
9583 552 736 Sify Limited
27364 528 539 Armstrong Cable Services
4323 519 1103 Time Warner Telecom
4766 405 588 Korea Telecom (KIX)
5668 404 487 CenturyTel Internet Holdings,
7725 383 410 MediaOne
1239 378 900 Sprint
702 366 593 UUNET - Commercial IP service
6198 342 465 BellSouth Network Solutions,
10036 314 314 C&M Communication Co. Ltd.
6467 307 429 E.Spire Communications, Inc.
6517 298 321 Yipes Communications, Inc.
7011 298 348 Citizens Utilities
9929 281 360 China Netcom Corp.
11456 278 320 Carolina Online, Inc.
15270 259 279 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:13 12:1533 13:1 15:9 16:2
17:3 18:4 20:4 24:1068 30:2 32:69
33:4 38:112 40:53 44:3 47:2 52:4
55:2 56:3 57:23 58:43 59:31 60:33
61:786 62:608 63:1869 64:2692 65:2069 66:2831
67:576 68:526 69:1002 70:102 71:17 72:175
80:575 81:547 82:396 83:261 84:169 85:191
86:8 128:147 129:161 130:85 131:279 132:33
133:1 134:148 135:40 136:189 137:65 138:171
139:55 140:191 141:106 142:148 143:141 144:168
145:33 146:281 147:105 148:290 149:169 150:97
151:65 152:106 153:86 154:5 155:144 156:78
157:92 158:161 159:174 160:77 161:64 162:203
163:82 164:207 165:174 166:154 167:233 168:420
169:140 170:313 171:8 172:2 192:5702 193:3186
194:2351 195:1553 196:643 198:3926 199:3271 200:3919
201:126 202:5562 203:6150 204:3818 205:2016 206:2476
207:2754 208:2058 209:3288 210:1682 211:822 212:1147
213:1282 214:265 215:34 216:3459 217:1127 218:198
219:106 220:379 221:214 222:103
End of report
