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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 26 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 163032
Prefixes after maximum aggregation: 94646
Unique aggregates announced to Internet: 78688
Total ASes present in the Internet Routing Table: 19708
Origin-only ASes present in the Internet Routing Table: 17151
Origin ASes announcing only one prefix: 8047
Transit ASes present in the Internet Routing Table: 2557
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 29
Prefixes from unregistered ASNs in the Routing Table: 14
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1409186368
Equivalent to 83 /8s, 254 /16s and 122 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 76671
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33452
Total APNIC prefixes after maximum aggregation: 15710
Prefixes being announced from the APNIC address blocks: 31355
Unique aggregates announced from the APNIC address blocks: 15908
APNIC Region origin ASes present in the Internet Routing Table: 2278
APNIC Region origin ASes announcing only one prefix: 668
APNIC Region transit ASes present in the Internet Routing Table: 346
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 183982208
Equivalent to 10 /8s, 247 /16s and 88 /24s
Percentage of available APNIC address space announced: 68.3
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: 88360
Total ARIN prefixes after maximum aggregation: 53749
Prefixes being announced from the ARIN address blocks: 69006
Unique aggregates announced from the ARIN address blocks: 25327
ARIN Region origin ASes present in the Internet Routing Table: 9953
ARIN Region origin ASes announcing only one prefix: 3633
ARIN Region transit ASes present in the Internet Routing Table: 938
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 248762112
Equivalent to 14 /8s, 211 /16s and 207 /24s
Percentage of available ARIN address space announced: 70.6
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: 30858
Total RIPE prefixes after maximum aggregation: 21367
Prefixes being announced from the RIPE address blocks: 27935
Unique aggregates announced from the RIPE address blocks: 18760
RIPE Region origin ASes present in the Internet Routing Table: 6662
RIPE Region origin ASes announcing only one prefix: 3517
RIPE Region transit ASes present in the Internet Routing Table: 1113
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 29
Number of RIPE addresses announced to Internet: 205340864
Equivalent to 12 /8s, 61 /16s and 64 /24s
Percentage of available RIPE address space announced: 72.0
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: 8710
Total LACNIC prefixes after maximum aggregation: 3052
Prefixes being announced from the LACNIC address blocks: 7131
Unique aggregates announced from the LACNIC address blocks: 4138
LACNIC Region origin ASes present in the Internet Routing Table: 620
LACNIC Region origin ASes announcing only one prefix: 193
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: 24
Number of LACNIC addresses announced to Internet: 18898688
Equivalent to 1 /8s, 32 /16s and 95 /24s
Percentage of available LACNIC address space announced: 56.3
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: 1632
Total AfriNIC prefixes after maximum aggregation: 768
Prefixes being announced from the AfriNIC address blocks: 1001
Unique aggregates announced from the AfriNIC address blocks: 776
AfriNIC Region origin ASes present in the Internet Routing Table: 125
AfriNIC Region origin ASes announcing only one prefix: 36
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: 12
Number of AfriNIC addresses announced to Internet: 2279680
Equivalent to 0 /8s, 34 /16s and 201 /24s
Percentage of available AfriNIC address space announced: 6.8
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 907 5125 187 CHINANET-BACKBONE
1221 754 1182 542 Telstra Pty Ltd
9583 735 54 78 Sify Limited
4755 608 246 124 Videsh Sanchar Nigam Ltd. Aut
4766 589 3412 277 Korea Telecom (KIX)
7545 498 88 71 TPG Internet Pty Ltd
17676 432 6525 74 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 360 197 46 China Netcom Corp.
2907 339 1821 315 SINET Japan
10036 323 29 290 C&M Communication Co. Ltd.
17557 314 22 152 Pakistan Telecom
4808 308 249 168 CNCGROUP IP network: China169
7474 308 270 211 SingTel Optus Pty Ltd
9498 302 83 59 BHARTI BT INTERNET LTD.
4802 287 48 164 Wantree Development
17974 260 65 14 PT TELEKOMUNIKASI INDONESIA
18302 257 107 143 SK Global co., Ltd
703 254 277 211 UUNET - Commercial IP service
2764 252 238 197 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1482 6459 956 AT&T WorldNet Services
174 1176 5610 1009 Cogent Communications
4323 1116 647 217 Time Warner Telecom
721 1115 21755 312 DLA Systems Automation Center
701 1020 8186 858 UUNET Technologies, Inc.
6197 910 381 466 BellSouth Network Solutions,
1239 893 2869 648 Sprint
2386 853 532 635 AT&T Data Communications Serv
18566 812 224 7 Covad Communications
209 654 3521 494 Qwest
20115 600 506 315 Charter Communications
3356 579 10842 436 Level 3 Communications, LLC
27364 565 43 18 Armstrong Cable Services
852 532 1095 392 Telus Advanced Communications
3561 531 2384 417 Savvis
3602 522 123 99 Sprint Canada, Inc.
22773 488 1188 23 Cox Communications, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
6198 467 445 210 BellSouth Network Solutions,
7725 450 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 596 2003 488 UUNET - Commercial IP service
3320 307 3233 241 Deutsche Telekom AG
3301 296 1084 284 TeliaNet Sweden
8220 275 469 268 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 491 226 Song Networks
8708 229 252 213 Romania Data Systems S.A.
1257 199 727 175 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 166 1496 69 TELECOM ITALIA
719 165 340 102 LANLINK autonomous system
6746 165 47 144 Dynamic Network Technologies,
5400 162 285 136 BT Ignite European Backbone
3300 153 184 86 AUCS Communications Services
8866 147 21 11 Bulgarian Telecommunication C
6830 137 513 27 UPC Distribution Services
25186 136 137 96 France Telecom Transpac's Tra
1273 131 171 95 Cable & Wireless Deutschland
9051 131 8 30 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 373 600 151 UniNet S.A. de C.V.
16814 266 16 7 NSS, S.A.
11172 218 98 53 Servicios Alestra S.A de C.V
6147 180 102 20 Telefonica Del Peru
11664 157 19 22 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
14117 136 9 5 Telefonica del Sur S.A.
6505 133 90 89 Global One Communicaoes Ltda
22047 131 96 6 VTR PUNTO NET S.A.
19632 119 14 5 Metropolis Intercom S.A.
13999 113 52 9 Mega Cable S.A. de C.V.
11556 111 55 7 Cable-Wireless Panama
18822 105 7 15 TELEFONICA MANQUEHUE
6503 103 146 73 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 100 6 17 Telconet
22927 97 73 25 TELEFONICA DE ARGENTINA
21826 92 12 18 INTERCABLE
23216 91 24 23 RAMtelecom Telecomunicaciones
11311 89 8 18 Sinectis S.A.
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 637 224 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 92 295 86 Tertiary Education Network
20928 92 16 2 Noor Advanced Technologies AS
8452 81 28 6 TEDATA
2905 74 266 68 The Internetworking Company o
24835 63 34 6 RAYA Telecom - Egypt
6713 59 54 8 Itissalat Al-MAGHRIB
9129 44 3 3 UUNET Kenya
12455 39 6 3 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15475 32 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
33765 20 3 8 TANZANIA TELECOMMUNICATIONS C
10798 19 1 11 Standard Bank of South Africa
7460 17 3 5 LIA Internet Access
12258 17 3 11 Vodacom Internet Company
21491 17 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1116 899 Time Warner Telecom
18566 812 805 Covad Communications
721 1115 803 DLA Systems Automation Center
4134 907 720 CHINANET-BACKBONE
9583 735 657 Sify Limited
27364 565 547 Armstrong Cable Services
4755 608 484 Videsh Sanchar Nigam Ltd. Aut
22773 488 465 Cox Communications, Inc.
5668 487 462 CenturyTel Internet Holdings,
6197 910 444 BellSouth Network Solutions,
7725 450 435 MediaOne
7545 498 427 TPG Internet Pty Ltd
3602 522 423 Sprint Canada, Inc.
6467 425 390 E.Spire Communications, Inc.
17676 432 358 Softbank BB Corp.
6140 407 330 ImpSat
9929 360 314 China Netcom Corp.
4766 589 312 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
20115 600 285 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
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
172.32.0.0/24 7011 Citizens Utilities
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 /12:71
/13:154 /14:306 /15:600 /16:8401 /17:2556 /18:4413
/19:10316 /20:11193 /21:9072 /22:12554 /23:13540 /24:88912
/25:290 /26:249 /27:139 /28:68 /29:40 /30:80
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 796 812 Covad Communications
6197 748 910 BellSouth Network Solutions,
7018 680 1482 AT&T WorldNet Services
2386 603 853 AT&T Data Communications Serv
27364 556 565 Armstrong Cable Services
9583 552 735 Sify Limited
4323 532 1116 Time Warner Telecom
7725 423 450 MediaOne
4766 406 589 Korea Telecom (KIX)
5668 402 487 CenturyTel Internet Holdings,
1239 376 893 Sprint
702 367 596 UUNET - Commercial IP service
6198 339 467 BellSouth Network Solutions,
10036 323 323 C&M Communication Co. Ltd.
7011 303 353 Citizens Utilities
6467 297 425 E.Spire Communications, Inc.
6517 282 304 Yipes Communications, Inc.
11456 282 323 Carolina Online, Inc.
9929 281 360 China Netcom Corp.
15270 274 294 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:13 12:1546 13:1 15:9 16:2
17:3 18:4 20:4 24:1144 30:2 32:68
33:4 38:118 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:89 59:38 60:39
61:786 62:610 63:1877 64:2776 65:2065 66:2895
67:577 68:530 69:1031 70:108 71:6 72:204
80:573 81:544 82:404 83:243 84:176 85:206
86:16 128:171 129:172 130:83 131:280 132:36
133:1 134:150 135:41 136:189 137:69 138:169
139:58 140:190 141:105 142:149 143:145 144:186
145:33 146:274 147:105 148:300 149:163 150:97
151:65 152:106 153:85 154:5 155:143 156:78
157:92 158:161 159:171 160:96 161:72 162:205
163:86 164:207 165:176 166:157 167:234 168:423
169:140 170:316 171:8 172:2 192:5716 193:3144
194:2383 195:1568 196:656 198:3930 199:3283 200:3925
201:138 202:5606 203:6223 204:3836 205:1994 206:2483
207:2810 208:2060 209:3298 210:1682 211:827 212:1187
213:1286 214:260 215:31 216:3446 217:1137 218:200
219:107 220:375 221:222 222:103
End of report
