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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 18 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168317
Prefixes after maximum aggregation: 96803
Unique aggregates announced to Internet: 81684
Total ASes present in the Internet Routing Table: 20308
Origin-only ASes present in the Internet Routing Table: 17683
Origin ASes announcing only one prefix: 8355
Transit ASes present in the Internet Routing Table: 2625
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: 1405362197
Equivalent to 83 /8s, 196 /16s and 32 /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: 79788
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 35004
Total APNIC prefixes after maximum aggregation: 15794
Prefixes being announced from the APNIC address blocks: 32861
Unique aggregates announced from the APNIC address blocks: 16526
APNIC Region origin ASes present in the Internet Routing Table: 2335
APNIC Region origin ASes announcing only one prefix: 694
APNIC Region transit ASes present in the Internet Routing Table: 353
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192796800
Equivalent to 11 /8s, 125 /16s and 216 /24s
Percentage of available APNIC address space announced: 71.5
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: 89973
Total ARIN prefixes after maximum aggregation: 54852
Prefixes being announced from the ARIN address blocks: 70321
Unique aggregates announced from the ARIN address blocks: 26083
ARIN Region origin ASes present in the Internet Routing Table: 10148
ARIN Region origin ASes announcing only one prefix: 3738
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: 259078933
Equivalent to 15 /8s, 113 /16s and 59 /24s
Percentage of available ARIN address space announced: 64.3
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, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 32430
Total RIPE prefixes after maximum aggregation: 22211
Prefixes being announced from the RIPE address blocks: 29447
Unique aggregates announced from the RIPE address blocks: 19866
RIPE Region origin ASes present in the Internet Routing Table: 6991
RIPE Region origin ASes announcing only one prefix: 3688
RIPE Region transit ASes present in the Internet Routing Table: 1153
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 215216512
Equivalent to 12 /8s, 211 /16s and 241 /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: 9226
Total LACNIC prefixes after maximum aggregation: 3158
Prefixes being announced from the LACNIC address blocks: 7587
Unique aggregates announced from the LACNIC address blocks: 4401
LACNIC Region origin ASes present in the Internet Routing Table: 632
LACNIC Region origin ASes announcing only one prefix: 197
LACNIC Region transit ASes present in the Internet Routing Table: 117
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 21164800
Equivalent to 1 /8s, 66 /16s and 243 /24s
Percentage of available LACNIC address space announced: 31.5
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: 1663
Total AfriNIC prefixes after maximum aggregation: 788
Prefixes being announced from the AfriNIC address blocks: 1013
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: 38
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 959 5532 194 CHINANET-BACKBONE
1221 760 1327 527 Telstra Pty Ltd
9583 750 77 14 Sify Limited
4755 666 259 64 Videsh Sanchar Nigam Ltd. Aut
4766 596 3413 280 Korea Telecom (KIX)
7545 516 108 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 337 224 46 China Netcom Corp.
17557 325 23 152 Pakistan Telecom
7474 315 257 218 SingTel Optus Pty Ltd
4802 295 53 159 Wantree Development
18302 294 109 155 SK Global co., Ltd
17488 281 17 31 Hathway IP Over Cable Interne
9837 278 80 180 Powertel Ltd
17974 272 65 14 PT TELEKOMUNIKASI INDONESIA
703 255 262 207 UUNET - Commercial IP service
9800 250 390 64 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1513 6408 973 AT&T WorldNet Services
4323 1149 704 221 Time Warner Telecom
174 1117 5820 1027 Cogent Communications
721 1096 21907 317 DLA Systems Automation Center
701 1003 8154 854 UUNET Technologies, Inc.
6197 943 506 451 BellSouth Network Solutions,
2386 897 528 660 AT&T Data Communications Serv
1239 864 2847 626 Sprint
18566 834 224 7 Covad Communications
20115 641 501 325 Charter Communications
209 622 3470 488 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 521 1352 27 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 470 412 226 BellSouth Network Solutions,
7132 452 4946 386 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,
5400 177 289 150 BT Ignite European Backbone
786 174 1794 174 The JANET IP Service
3269 169 1518 71 TELECOM ITALIA
9121 165 278 42 TTnet Autonomous System
8866 163 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 383 599 163 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 185 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
6503 114 147 75 AVANTEL, S.A.
13999 110 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
21826 103 13 15 INTERCABLE
5639 101 12 9 Telecommunications Services o
10481 101 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 104 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 47 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 1149 928 Time Warner Telecom
18566 834 827 Covad Communications
721 1096 779 DLA Systems Automation Center
4134 959 765 CHINANET-BACKBONE
9583 750 736 Sify Limited
4755 666 602 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
22773 521 494 Cox Communications, Inc.
6197 943 492 BellSouth Network Solutions,
5668 501 478 CenturyTel Internet Holdings,
3602 550 444 Sprint Canada, Inc.
7545 516 443 TPG Internet Pty Ltd
17676 465 366 Softbank BB Corp.
6467 436 363 E.Spire Communications, Inc.
19262 446 327 Verizon Global Networks
20115 641 316 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 /12:75
/13:170 /14:318 /15:606 /16:8485 /17:2684 /18:4562
/19:10615 /20:11636 /21:9647 /22:13087 /23:13958 /24:91370
/25:355 /26:330 /27:185 /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 770 943 BellSouth Network Solutions,
7018 721 1513 AT&T WorldNet Services
2386 604 897 AT&T Data Communications Serv
9583 567 750 Sify Limited
4323 550 1149 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 359 864 Sprint
6198 344 470 BellSouth Network Solutions,
7011 332 383 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.
18302 279 294 SK Global co., Ltd
701 278 1003 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:23 11:1 12:1564 13:1 15:9
16:2 17:3 18:3 20:5 24:962 30:3
32:70 33:1 38:140 40:56 44:4 47:2
52:4 55:2 56:3 57:23 58:151 59:61
60:110 61:723 62:668 63:1889 64:2839 65:2072
66:2906 67:587 68:575 69:1141 70:170 71:13
72:318 80:595 81:555 82:450 83:295 84:229
85:306 86:80 87:26 128:157 129:166 130:90
131:299 132:36 133:1 134:144 135:42 136:150
137:63 138:162 139:61 140:398 141:105 142:145
143:140 144:191 145:34 146:289 147:110 148:291
149:179 150:107 151:63 152:108 153:89 154:5
155:142 156:76 157:99 158:166 159:165 160:82
161:72 162:219 163:103 164:188 165:194 166:153
167:246 168:438 169:145 170:317 171:8 190:1
192:5741 193:3251 194:2389 195:1578 196:655 198:3881
199:3284 200:4119 201:238 202:6025 203:6401 204:3800
205:2037 206:2459 207:2833 208:2039 209:3353 210:1648
211:753 212:1267 213:1309 214:289 215:35 216:3627
217:1105 218:214 219:162 220:433 221:237 222:122
End of report
