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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 19 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168312
Prefixes after maximum aggregation: 96798
Unique aggregates announced to Internet: 81685
Total ASes present in the Internet Routing Table: 20312
Origin-only ASes present in the Internet Routing Table: 17693
Origin ASes announcing only one prefix: 8357
Transit ASes present in the Internet Routing Table: 2619
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 26
Prefixes from unregistered ASNs in the Routing Table: 16
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1405772565
Equivalent to 83 /8s, 202 /16s and 99 /24s
Percentage of available address space announced: 37.9
Percentage of allocated address space announced: 57.1
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79835
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 35056
Total APNIC prefixes after maximum aggregation: 15784
Prefixes being announced from the APNIC address blocks: 32913
Unique aggregates announced from the APNIC address blocks: 16521
APNIC Region origin ASes present in the Internet Routing Table: 2340
APNIC Region origin ASes announcing only one prefix: 696
APNIC Region transit ASes present in the Internet Routing Table: 354
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192832128
Equivalent to 11 /8s, 126 /16s and 98 /24s
Percentage of available APNIC address space announced: 71.6
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
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: 90039
Total ARIN prefixes after maximum aggregation: 54872
Prefixes being announced from the ARIN address blocks: 70345
Unique aggregates announced from the ARIN address blocks: 26102
ARIN Region origin ASes present in the Internet Routing Table: 10150
ARIN Region origin ASes announcing only one prefix: 3737
ARIN Region transit ASes present in the Internet Routing Table: 948
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 259610901
Equivalent to 15 /8s, 121 /16s and 89 /24s
Percentage of available ARIN address space announced: 64.5
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, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 32441
Total RIPE prefixes after maximum aggregation: 22208
Prefixes being announced from the RIPE address blocks: 29455
Unique aggregates announced from the RIPE address blocks: 19872
RIPE Region origin ASes present in the Internet Routing Table: 6990
RIPE Region origin ASes announcing only one prefix: 3688
RIPE Region transit ASes present in the Internet Routing Table: 1150
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 215191168
Equivalent to 12 /8s, 211 /16s and 142 /24s
Percentage of available RIPE address space announced: 64.1
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, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9093
Total LACNIC prefixes after maximum aggregation: 3146
Prefixes being announced from the LACNIC address blocks: 7467
Unique aggregates announced from the LACNIC address blocks: 4361
LACNIC Region origin ASes present in the Internet Routing Table: 630
LACNIC Region origin ASes announcing only one prefix: 197
LACNIC Region transit ASes present in the Internet Routing Table: 115
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 21230080
Equivalent to 1 /8s, 67 /16s and 242 /24s
Percentage of available LACNIC address space announced: 31.6
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1662
Total AfriNIC prefixes after maximum aggregation: 788
Prefixes being announced from the AfriNIC address blocks: 1012
Unique aggregates announced from the AfriNIC address blocks: 779
AfriNIC Region origin ASes present in the Internet Routing Table: 134
AfriNIC Region origin ASes announcing only one prefix: 39
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2364416
Equivalent to 0 /8s, 36 /16s and 20 /24s
Percentage of available AfriNIC address space announced: 7.0
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 958 5532 194 CHINANET-BACKBONE
1221 760 1327 527 Telstra Pty Ltd
9583 756 77 14 Sify Limited
4755 667 259 65 Videsh Sanchar Nigam Ltd. Aut
4766 596 3413 280 Korea Telecom (KIX)
7545 517 108 73 TPG Internet Pty Ltd
17676 465 6739 99 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9498 341 83 61 BHARTI BT INTERNET LTD.
2907 338 1789 315 SINET Japan
9929 338 224 46 China Netcom Corp.
17557 325 23 152 Pakistan Telecom
7474 315 257 218 SingTel Optus Pty Ltd
17488 299 18 19 Hathway IP Over Cable Interne
4802 296 53 157 Wantree Development
18302 292 109 158 SK Global co., Ltd
9837 277 80 179 Powertel Ltd
703 256 262 208 UUNET - Commercial IP service
17974 254 65 14 PT TELEKOMUNIKASI INDONESIA
9800 250 390 64 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1518 6406 986 AT&T WorldNet Services
4323 1151 704 221 Time Warner Telecom
174 1117 5820 1028 Cogent Communications
721 1095 21891 316 DLA Systems Automation Center
701 1002 8154 853 UUNET Technologies, Inc.
6197 940 497 448 BellSouth Network Solutions,
2386 909 529 670 AT&T Data Communications Serv
1239 863 2846 626 Sprint
18566 834 224 7 Covad Communications
20115 642 503 324 Charter Communications
209 621 3470 487 Qwest
3356 577 10662 446 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 550 125 106 Sprint Canada, Inc.
3561 534 2416 423 Savvis
22773 519 1352 26 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 470 412 226 BellSouth Network Solutions,
7132 455 4948 389 SBC Internet Services
19262 446 1353 119 Verizon Global Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 1999 484 UUNET - Commercial IP service
3301 299 1081 285 TeliaNet Sweden
3320 291 3232 240 Deutsche Telekom AG
8220 263 474 259 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 227 261 213 Romania Data Systems S.A.
1257 198 713 176 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
6746 180 49 156 Dynamic Network Technologies,
786 174 1794 174 The JANET IP Service
3269 169 1518 71 TELECOM ITALIA
5400 166 289 140 BT Ignite European Backbone
9121 165 278 42 TTnet Autonomous System
8866 164 20 7 Bulgarian Telecommunication C
3300 155 184 89 AUCS Communications Services
6830 154 665 32 UPC Distribution Services
25186 144 145 101 France Telecom Transpac's Tra
8551 138 120 20 Bezeq International
1273 137 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 384 584 164 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 240 99 57 Servicios Alestra S.A de C.V
6147 193 110 21 Telefonica Del Peru
11664 188 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
22047 145 128 7 VTR PUNTO NET S.A.
7303 143 68 15 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 120 8 26 Telconet
13999 116 52 9 Mega Cable S.A. de C.V.
6503 114 147 75 AVANTEL, S.A.
18822 110 7 14 TELEFONICA MANQUEHUE
21826 103 13 15 INTERCABLE
5639 101 12 9 Telecommunications Services o
10481 100 40 7 Prima S.A.
11311 97 8 14 Sinectis S.A.
23216 95 24 20 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 263 621 221 The Internet Solution
5536 124 16 15 Internet Egypt Network
8452 102 32 7 TEDATA
2018 96 295 87 Tertiary Education Network
2905 76 266 68 The Internetworking Company o
20928 57 16 2 Noor Advanced Technologies AS
24835 57 34 6 RAYA Telecom - Egypt
6713 51 54 8 Itissalat Al-MAGHRIB
15475 49 84 4 Nile Online
9129 42 3 3 UUNET Kenya
5713 41 149 32 Telkom SA Ltd
12455 35 6 3 Jambonet Autonomous system
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 21 1 12 Standard Bank of South Africa
23889 20 5 9 MAURITIUS TELECOM
12258 17 3 11 Vodacom Internet Company
15804 17 2 1 AS of The Way Out Internet So
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1151 930 Time Warner Telecom
18566 834 827 Covad Communications
721 1095 779 DLA Systems Automation Center
4134 958 764 CHINANET-BACKBONE
9583 756 742 Sify Limited
4755 667 602 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
22773 519 493 Cox Communications, Inc.
6197 940 492 BellSouth Network Solutions,
5668 501 478 CenturyTel Internet Holdings,
3602 550 444 Sprint Canada, Inc.
7545 517 444 TPG Internet Pty Ltd
17676 465 366 Softbank BB Corp.
6467 436 363 E.Spire Communications, Inc.
19262 446 327 Verizon Global Networks
20115 642 318 Charter Communications
4766 596 316 Korea Telecom (KIX)
11492 315 309 Cable One
9443 382 305 Primus Telecommunications
6140 416 293 ImpSat
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
65511 PRIVATE 65.77.145.0/24 16605 Aaro Broadband Wirel
65507 PRIVATE 200.0.64.0/24 27750 Cooperación Latino A
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
64943 PRIVATE 202.41.14.0/24 24110 Security Mail Pty Lt
64942 PRIVATE 202.41.15.0/24 24110 Security Mail Pty Lt
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65103 PRIVATE 216.53.126.0/23 7270 Net2Phone Corp.
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
192.145.251.0/24 17860 WEBZEN
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 /8:17 /9:3 /10:8 /11:16 /12:76
/13:169 /14:318 /15:606 /16:8482 /17:2681 /18:4571
/19:10630 /20:11634 /21:9661 /22:13099 /23:13970 /24:91308
/25:356 /26:330 /27:187 /28:51 /29:27 /30:77
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 818 834 Covad Communications
6197 767 940 BellSouth Network Solutions,
7018 722 1518 AT&T WorldNet Services
2386 616 909 AT&T Data Communications Serv
9583 573 756 Sify Limited
4323 550 1151 Time Warner Telecom
27364 545 554 Armstrong Cable Services
4766 414 596 Korea Telecom (KIX)
5668 405 501 CenturyTel Internet Holdings,
702 366 593 UUNET - Commercial IP service
19916 363 370 OLM LLC
1239 360 863 Sprint
6198 344 470 BellSouth Network Solutions,
7011 335 387 Citizens Utilities
11492 307 315 Cable One
6517 300 322 Yipes Communications, Inc.
15270 300 324 PaeTec.net -a division of Pae
6467 290 436 E.Spire Communications, Inc.
701 279 1002 UUNET Technologies, Inc.
11456 279 317 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:23 11:1 12:1567 13:1 15:9
16:2 17:3 18:3 20:5 24:961 30:3
32:70 33:1 38:141 40:56 44:4 47:2
52:4 55:2 56:3 57:23 58:151 59:61
60:108 61:722 62:672 63:1892 64:2836 65:2072
66:2904 67:586 68:578 69:1142 70:170 71:13
72:330 80:591 81:548 82:453 83:295 84:225
85:305 86:81 87:26 128:157 129:167 130:90
131:299 132:36 133:1 134:144 135:42 136:150
137:63 138:163 139:61 140:397 141:105 142:145
143:140 144:190 145:33 146:292 147:110 148:293
149:180 150:105 151:63 152:108 153:89 154:5
155:142 156:76 157:99 158:166 159:165 160:82
161:72 162:219 163:111 164:188 165:195 166:153
167:246 168:437 169:145 170:318 171:8 190:1
192:5745 193:3253 194:2391 195:1581 196:653 198:3883
199:3282 200:4024 201:225 202:6045 203:6408 204:3794
205:2039 206:2454 207:2836 208:2043 209:3347 210:1652
211:753 212:1261 213:1311 214:289 215:35 216:3625
217:1109 218:213 219:162 220:434 221:242 222:116
End of report
