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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 28 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167372
Prefixes after maximum aggregation: 96464
Unique aggregates announced to Internet: 80969
Total ASes present in the Internet Routing Table: 20148
Origin-only ASes present in the Internet Routing Table: 17563
Origin ASes announcing only one prefix: 8276
Transit ASes present in the Internet Routing Table: 2585
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 28
Prefixes from unregistered ASNs in the Routing Table: 17
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1398736405
Equivalent to 83 /8s, 95 /16s and 6 /24s
Percentage of available address space announced: 37.7
Percentage of allocated address space announced: 56.8
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79365
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34639
Total APNIC prefixes after maximum aggregation: 15859
Prefixes being announced from the APNIC address blocks: 32508
Unique aggregates announced from the APNIC address blocks: 16360
APNIC Region origin ASes present in the Internet Routing Table: 2315
APNIC Region origin ASes announcing only one prefix: 680
APNIC Region transit ASes present in the Internet Routing Table: 347
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192179072
Equivalent to 11 /8s, 116 /16s and 107 /24s
Percentage of available APNIC address space announced: 71.3
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: 89719
Total ARIN prefixes after maximum aggregation: 54682
Prefixes being announced from the ARIN address blocks: 70150
Unique aggregates announced from the ARIN address blocks: 25875
ARIN Region origin ASes present in the Internet Routing Table: 10104
ARIN Region origin ASes announcing only one prefix: 3719
ARIN Region transit ASes present in the Internet Routing Table: 940
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 254808597
Equivalent to 15 /8s, 48 /16s and 18 /24s
Percentage of available ARIN address space announced: 63.3
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: 32213
Total RIPE prefixes after maximum aggregation: 21993
Prefixes being announced from the RIPE address blocks: 29211
Unique aggregates announced from the RIPE address blocks: 19620
RIPE Region origin ASes present in the Internet Routing Table: 6904
RIPE Region origin ASes announcing only one prefix: 3648
RIPE Region transit ASes present in the Internet Routing Table: 1131
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 28
Number of RIPE addresses announced to Internet: 212552320
Equivalent to 12 /8s, 171 /16s and 74 /24s
Percentage of available RIPE address space announced: 63.3
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: 9131
Total LACNIC prefixes after maximum aggregation: 3148
Prefixes being announced from the LACNIC address blocks: 7508
Unique aggregates announced from the LACNIC address blocks: 4379
LACNIC Region origin ASes present in the Internet Routing Table: 626
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 116
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 20621568
Equivalent to 1 /8s, 58 /16s and 169 /24s
Percentage of available LACNIC address space announced: 30.7
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: 1647
Total AfriNIC prefixes after maximum aggregation: 782
Prefixes being announced from the AfriNIC address blocks: 1009
Unique aggregates announced from the AfriNIC address blocks: 768
AfriNIC Region origin ASes present in the Internet Routing Table: 131
AfriNIC Region origin ASes announcing only one prefix: 36
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: 2339072
Equivalent to 0 /8s, 35 /16s and 177 /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 954 5523 193 CHINANET-BACKBONE
9583 774 77 14 Sify Limited
1221 763 1455 529 Telstra Pty Ltd
4755 659 248 144 Videsh Sanchar Nigam Ltd. Aut
4766 590 3412 278 Korea Telecom (KIX)
7545 513 108 73 TPG Internet Pty Ltd
17676 463 6707 98 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9929 343 224 46 China Netcom Corp.
2907 337 1789 314 SINET Japan
9498 335 83 61 BHARTI BT INTERNET LTD.
7474 317 273 219 SingTel Optus Pty Ltd
4802 297 53 164 Wantree Development
17557 297 23 154 Pakistan Telecom
4808 287 245 169 CNCGROUP IP network: China169
18302 282 109 156 SK Global co., Ltd
9837 279 80 183 Powertel Ltd
17974 271 65 14 PT TELEKOMUNIKASI INDONESIA
17488 267 16 8 Hathway IP Over Cable Interne
703 251 262 207 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6416 964 AT&T WorldNet Services
4323 1138 672 222 Time Warner Telecom
174 1128 5823 1051 Cogent Communications
721 1080 21779 310 DLA Systems Automation Center
701 1021 8172 863 UUNET Technologies, Inc.
6197 939 522 433 BellSouth Network Solutions,
2386 893 529 657 AT&T Data Communications Serv
1239 874 2879 630 Sprint
18566 832 224 7 Covad Communications
20115 652 499 321 Charter Communications
209 622 3471 491 Qwest
3356 563 10765 431 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 545 123 104 Sprint Canada, Inc.
3561 535 2384 421 Savvis
7725 510 64 17 MediaOne
22773 503 1188 23 Cox Communications, Inc.
5668 494 114 22 CenturyTel Internet Holdings,
852 487 1093 385 Telus Advanced Communications
6198 467 396 224 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 592 1995 483 UUNET - Commercial IP service
3301 300 1081 286 TeliaNet Sweden
3320 292 3232 241 Deutsche Telekom AG
8220 266 473 262 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 224 253 210 Romania Data Systems S.A.
1257 196 712 174 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
786 175 1794 175 The JANET IP Service
5400 175 288 147 BT Ignite European Backbone
6746 174 49 152 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 166 21 11 Bulgarian Telecommunication C
3300 154 184 87 AUCS Communications Services
9121 151 273 34 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 142 145 99 France Telecom Transpac's Tra
1273 135 174 95 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 377 599 157 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 236 99 60 Servicios Alestra S.A de C.V
6147 192 110 21 Telefonica Del Peru
11664 181 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 151 69 18 Telecom Argentina Stet-France
22047 143 112 7 VTR PUNTO NET S.A.
19632 142 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 115 7 22 Telconet
6503 114 148 75 AVANTEL, S.A.
13999 110 52 9 Mega Cable S.A. de C.V.
18822 110 7 14 TELEFONICA MANQUEHUE
10481 101 40 7 Prima S.A.
21826 98 13 18 INTERCABLE
22927 97 81 26 TELEFONICA DE ARGENTINA
23216 97 24 22 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 262 621 221 The Internet Solution
5536 120 15 17 Internet Egypt Network
2018 97 295 88 Tertiary Education Network
8452 96 28 6 TEDATA
2905 76 266 68 The Internetworking Company o
24835 57 34 6 RAYA Telecom - Egypt
20928 56 16 2 Noor Advanced Technologies AS
6713 51 54 8 Itissalat Al-MAGHRIB
15475 49 84 4 Nile Online
9129 43 3 3 UUNET Kenya
12455 39 7 4 Jambonet Autonomous system
5713 36 142 29 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
8524 23 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
23889 20 5 9 MAURITIUS TELECOM
10798 19 1 11 Standard Bank of South Africa
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
21491 17 1 1 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1138 916 Time Warner Telecom
18566 832 825 Covad Communications
721 1080 770 DLA Systems Automation Center
4134 954 761 CHINANET-BACKBONE
9583 774 760 Sify Limited
27364 554 536 Armstrong Cable Services
4755 659 515 Videsh Sanchar Nigam Ltd. Aut
6197 939 506 BellSouth Network Solutions,
7725 510 493 MediaOne
22773 503 480 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 545 441 Sprint Canada, Inc.
7545 513 440 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 430 357 E.Spire Communications, Inc.
20115 652 331 Charter Communications
19262 432 319 Verizon Global Networks
4766 590 312 Korea Telecom (KIX)
9443 382 305 Primus Telecommunications
6140 399 299 ImpSat
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
65142 PRIVATE 200.32.76.0/24 6140 ImpSat
65142 PRIVATE 200.32.77.0/24 6140 ImpSat
64512 PRIVATE 200.61.48.0/20 11664 Keytech SA
64512 PRIVATE 200.61.58.0/23 11664 Keytech SA
64512 PRIVATE 200.80.148.0/23 11664 Keytech SA
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
50.160.0.0/13 1221 Telstra Pty Ltd
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
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
192.169.0.0/23 3970 RGnet, Inc.
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 /11:15 /12:75
/13:167 /14:317 /15:606 /16:8475 /17:2657 /18:4534
/19:10539 /20:11483 /21:9525 /22:13013 /23:13872 /24:91057
/25:353 /26:296 /27:172 /28:51 /29:27 /30:75
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 816 832 Covad Communications
6197 765 939 BellSouth Network Solutions,
7018 701 1491 AT&T WorldNet Services
2386 604 893 AT&T Data Communications Serv
9583 591 774 Sify Limited
27364 545 554 Armstrong Cable Services
4323 541 1138 Time Warner Telecom
7725 480 510 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 402 494 CenturyTel Internet Holdings,
702 365 592 UUNET - Commercial IP service
1239 361 874 Sprint
6198 342 467 BellSouth Network Solutions,
7011 326 377 Citizens Utilities
19916 323 330 OLM LLC
15270 295 320 PaeTec.net -a division of Pae
6517 293 315 Yipes Communications, Inc.
6467 286 430 E.Spire Communications, Inc.
20115 283 652 Charter Communications
11456 276 315 Carolina Online, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:22 9:1 12:1559 13:1 15:9
16:2 17:3 18:3 20:4 24:1181 30:2
32:71 33:2 38:140 40:55 44:4 47:2
52:4 55:2 56:3 57:23 58:149 59:58
60:68 61:745 62:608 63:1885 64:2796 65:2067
66:2922 67:639 68:558 69:1114 70:149 71:10
72:270 80:578 81:573 82:436 83:297 84:218
85:296 86:62 87:18 128:160 129:168 130:88
131:294 132:38 133:1 134:144 135:42 136:138
137:73 138:164 139:60 140:303 141:107 142:147
143:140 144:201 145:34 146:290 147:110 148:289
149:177 150:107 151:65 152:108 153:88 154:5
155:141 156:78 157:99 158:165 159:167 160:80
161:70 162:216 163:94 164:193 165:187 166:156
167:240 168:438 169:142 170:323 171:8 172:1
190:1 192:5741 193:3229 194:2423 195:1598 196:657
198:3906 199:3291 200:4093 201:212 202:5899 203:6366
204:3802 205:2031 206:2456 207:2804 208:2045 209:3320
210:1650 211:789 212:1270 213:1344 214:269 215:32
216:3609 217:1126 218:212 219:158 220:395 221:251
222:124
End of report
