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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 31 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167525
Prefixes after maximum aggregation: 96507
Unique aggregates announced to Internet: 81005
Total ASes present in the Internet Routing Table: 20170
Origin-only ASes present in the Internet Routing Table: 17585
Origin ASes announcing only one prefix: 8279
Transit ASes present in the Internet Routing Table: 2585
Transit-only ASes present in the Internet Routing Table: 73
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: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1399030549
Equivalent to 83 /8s, 99 /16s and 131 /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: 79501
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34627
Total APNIC prefixes after maximum aggregation: 15836
Prefixes being announced from the APNIC address blocks: 32490
Unique aggregates announced from the APNIC address blocks: 16274
APNIC Region origin ASes present in the Internet Routing Table: 2313
APNIC Region origin ASes announcing only one prefix: 678
APNIC Region transit ASes present in the Internet Routing Table: 344
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192244352
Equivalent to 11 /8s, 117 /16s and 106 /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: 89821
Total ARIN prefixes after maximum aggregation: 54683
Prefixes being announced from the ARIN address blocks: 70273
Unique aggregates announced from the ARIN address blocks: 25890
ARIN Region origin ASes present in the Internet Routing Table: 10105
ARIN Region origin ASes announcing only one prefix: 3721
ARIN Region transit ASes present in the Internet Routing Table: 945
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 254938133
Equivalent to 15 /8s, 50 /16s and 12 /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: 32289
Total RIPE prefixes after maximum aggregation: 22057
Prefixes being announced from the RIPE address blocks: 29271
Unique aggregates announced from the RIPE address blocks: 19700
RIPE Region origin ASes present in the Internet Routing Table: 6927
RIPE Region origin ASes announcing only one prefix: 3652
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: 26
Number of RIPE addresses announced to Internet: 212988544
Equivalent to 12 /8s, 177 /16s and 242 /24s
Percentage of available RIPE address space announced: 63.5
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: 9132
Total LACNIC prefixes after maximum aggregation: 3144
Prefixes being announced from the LACNIC address blocks: 7513
Unique aggregates announced from the LACNIC address blocks: 4389
LACNIC Region origin ASes present in the Internet Routing Table: 627
LACNIC Region origin ASes announcing only one prefix: 193
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: 20590592
Equivalent to 1 /8s, 58 /16s and 48 /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: 1641
Total AfriNIC prefixes after maximum aggregation: 787
Prefixes being announced from the AfriNIC address blocks: 1015
Unique aggregates announced from the AfriNIC address blocks: 780
AfriNIC Region origin ASes present in the Internet Routing Table: 130
AfriNIC Region origin ASes announcing only one prefix: 35
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2340352
Equivalent to 0 /8s, 35 /16s and 182 /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 769 77 14 Sify Limited
1221 764 1457 530 Telstra Pty Ltd
4755 661 248 143 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 333 83 61 BHARTI BT INTERNET LTD.
7474 317 273 219 SingTel Optus Pty Ltd
4802 297 53 164 Wantree Development
17557 297 23 153 Pakistan Telecom
18302 292 109 158 SK Global co., Ltd
4808 290 245 168 CNCGROUP IP network: China169
9837 278 79 181 Powertel Ltd
17974 271 65 14 PT TELEKOMUNIKASI INDONESIA
17488 267 16 8 Hathway IP Over Cable Interne
703 250 262 206 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1490 6417 962 AT&T WorldNet Services
4323 1141 688 222 Time Warner Telecom
174 1125 5823 1042 Cogent Communications
721 1081 21778 308 DLA Systems Automation Center
701 1016 8173 862 UUNET Technologies, Inc.
6197 936 496 445 BellSouth Network Solutions,
2386 895 529 658 AT&T Data Communications Serv
1239 872 2879 630 Sprint
18566 834 224 7 Covad Communications
20115 651 499 321 Charter Communications
209 623 3471 492 Qwest
3356 564 10765 431 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 547 123 104 Sprint Canada, Inc.
3561 530 2384 416 Savvis
7725 511 64 17 MediaOne
22773 503 1188 23 Cox Communications, Inc.
5668 499 115 26 CenturyTel Internet Holdings,
6198 468 396 225 BellSouth Network Solutions,
852 466 1093 385 Telus Advanced Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 1999 484 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 225 253 211 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 175 287 148 BT Ignite European Backbone
6746 175 49 153 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 167 21 11 Bulgarian Telecommunication C
3300 156 184 89 AUCS Communications Services
9121 152 273 34 TTnet Autonomous System
6830 148 537 31 UPC Distribution Services
25186 142 145 99 France Telecom Transpac's Tra
1273 136 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 381 599 161 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 233 99 58 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 144 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 116 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 101 13 18 INTERCABLE
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
23216 89 24 16 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 621 221 The Internet Solution
5536 120 15 17 Internet Egypt Network
2018 101 295 89 Tertiary Education Network
8452 97 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 42 3 3 UUNET Kenya
5713 36 142 29 Telkom SA Ltd
12455 33 6 7 Jambonet Autonomous system
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 1141 919 Time Warner Telecom
18566 834 827 Covad Communications
721 1081 773 DLA Systems Automation Center
4134 954 761 CHINANET-BACKBONE
9583 769 755 Sify Limited
27364 554 536 Armstrong Cable Services
4755 661 518 Videsh Sanchar Nigam Ltd. Aut
7725 511 494 MediaOne
6197 936 491 BellSouth Network Solutions,
22773 503 480 Cox Communications, Inc.
5668 499 473 CenturyTel Internet Holdings,
3602 547 443 Sprint Canada, Inc.
7545 513 440 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 431 358 E.Spire Communications, Inc.
20115 651 330 Charter Communications
19262 433 319 Verizon Global Networks
4766 590 312 Korea Telecom (KIX)
9443 382 305 Primus Telecommunications
6140 402 300 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
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 /15:607 /16:8469 /17:2664 /18:4541
/19:10535 /20:11525 /21:9531 /22:13041 /23:13904 /24:91073
/25:352 /26:319 /27:177 /28:50 /29:25 /30:75
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 818 834 Covad Communications
6197 764 936 BellSouth Network Solutions,
7018 703 1490 AT&T WorldNet Services
2386 606 895 AT&T Data Communications Serv
9583 586 769 Sify Limited
27364 545 554 Armstrong Cable Services
4323 542 1141 Time Warner Telecom
7725 481 511 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 403 499 CenturyTel Internet Holdings,
702 365 593 UUNET - Commercial IP service
19916 363 370 OLM LLC
1239 360 872 Sprint
6198 343 468 BellSouth Network Solutions,
7011 327 378 Citizens Utilities
15270 296 320 PaeTec.net -a division of Pae
6517 295 317 Yipes Communications, Inc.
6467 287 431 E.Spire Communications, Inc.
20115 283 651 Charter Communications
18302 277 292 SK Global co., Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:22 9:1 12:1557 13:1 15:9
16:2 17:3 18:3 20:4 24:1179 30:2
32:70 33:2 38:140 40:55 44:4 47:2
52:4 55:2 56:3 57:23 58:140 59:59
60:68 61:745 62:638 63:1884 64:2806 65:2067
66:2930 67:645 68:556 69:1119 70:151 71:10
72:277 80:582 81:567 82:437 83:300 84:225
85:304 86:69 87:19 128:163 129:168 130:88
131:294 132:38 133:1 134:146 135:42 136:138
137:73 138:164 139:61 140:304 141:105 142:147
143:141 144:203 145:34 146:291 147:110 148:288
149:175 150:107 151:65 152:108 153:88 154:5
155:140 156:78 157:99 158:165 159:167 160:82
161:70 162:218 163:94 164:193 165:189 166:156
167:240 168:438 169:143 170:323 171:8 172:1
190:1 192:5703 193:3232 194:2432 195:1589 196:664
198:3880 199:3295 200:4096 201:227 202:5908 203:6369
204:3808 205:2036 206:2429 207:2812 208:2043 209:3352
210:1625 211:741 212:1241 213:1343 214:275 215:32
216:3621 217:1124 218:213 219:160 220:404 221:252
222:123
End of report
