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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 26 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167278
Prefixes after maximum aggregation: 96473
Unique aggregates announced to Internet: 80885
Total ASes present in the Internet Routing Table: 20128
Origin-only ASes present in the Internet Routing Table: 17548
Origin ASes announcing only one prefix: 8254
Transit ASes present in the Internet Routing Table: 2580
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: 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: 15
Number of addresses announced to Internet: 1397547221
Equivalent to 83 /8s, 76 /16s and 224 /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: 79376
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34786
Total APNIC prefixes after maximum aggregation: 15929
Prefixes being announced from the APNIC address blocks: 32652
Unique aggregates announced from the APNIC address blocks: 16321
APNIC Region origin ASes present in the Internet Routing Table: 2315
APNIC Region origin ASes announcing only one prefix: 678
APNIC Region transit ASes present in the Internet Routing Table: 350
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 191502464
Equivalent to 11 /8s, 106 /16s and 24 /24s
Percentage of available APNIC address space announced: 71.1
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: 89519
Total ARIN prefixes after maximum aggregation: 54599
Prefixes being announced from the ARIN address blocks: 70041
Unique aggregates announced from the ARIN address blocks: 25809
ARIN Region origin ASes present in the Internet Routing Table: 10090
ARIN Region origin ASes announcing only one prefix: 3713
ARIN Region transit ASes present in the Internet Routing Table: 937
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 254710549
Equivalent to 15 /8s, 46 /16s and 147 /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: 32171
Total RIPE prefixes after maximum aggregation: 22008
Prefixes being announced from the RIPE address blocks: 29186
Unique aggregates announced from the RIPE address blocks: 19654
RIPE Region origin ASes present in the Internet Routing Table: 6897
RIPE Region origin ASes announcing only one prefix: 3634
RIPE Region transit ASes present in the Internet Routing Table: 1130
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212292160
Equivalent to 12 /8s, 167 /16s and 82 /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: 9126
Total LACNIC prefixes after maximum aggregation: 3156
Prefixes being announced from the LACNIC address blocks: 7489
Unique aggregates announced from the LACNIC address blocks: 4365
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: 20575744
Equivalent to 1 /8s, 57 /16s and 246 /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: 1654
Total AfriNIC prefixes after maximum aggregation: 781
Prefixes being announced from the AfriNIC address blocks: 1006
Unique aggregates announced from the AfriNIC address blocks: 771
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: 2338048
Equivalent to 0 /8s, 35 /16s and 173 /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 961 5568 195 CHINANET-BACKBONE
9583 776 77 14 Sify Limited
1221 753 1455 530 Telstra Pty Ltd
4755 668 248 146 Videsh Sanchar Nigam Ltd. Aut
4766 590 3412 278 Korea Telecom (KIX)
7545 514 108 74 TPG Internet Pty Ltd
17676 463 6707 98 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9929 364 224 46 China Netcom Corp.
2907 343 1806 318 SINET Japan
9498 331 83 60 BHARTI BT INTERNET LTD.
7474 315 272 217 SingTel Optus Pty Ltd
17557 296 23 153 Pakistan Telecom
4802 290 50 167 Wantree Development
4808 286 244 168 CNCGROUP IP network: China169
18302 280 109 154 SK Global co., Ltd
9837 279 80 183 Powertel Ltd
17974 270 65 14 PT TELEKOMUNIKASI INDONESIA
17488 267 16 8 Hathway IP Over Cable Interne
703 253 261 208 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1490 6416 965 AT&T WorldNet Services
4323 1139 673 224 Time Warner Telecom
174 1134 5824 1053 Cogent Communications
721 1082 21779 310 DLA Systems Automation Center
701 1023 8169 865 UUNET Technologies, Inc.
6197 937 522 433 BellSouth Network Solutions,
2386 889 528 656 AT&T Data Communications Serv
1239 875 2885 628 Sprint
18566 832 224 7 Covad Communications
20115 652 499 321 Charter Communications
209 620 3471 490 Qwest
3356 561 10765 429 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 544 123 104 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,
852 491 1093 382 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 174 286 147 BT Ignite European Backbone
6746 173 49 151 Dynamic Network Technologies,
3269 169 1520 72 TELECOM ITALIA
719 168 340 100 LANLINK autonomous system
8866 164 21 11 Bulgarian Telecommunication C
3300 154 184 87 AUCS Communications Services
9121 150 272 36 TTnet Autonomous System
6830 149 537 31 UPC Distribution Services
25186 141 145 98 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 237 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 150 69 18 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
22047 143 112 7 VTR PUNTO NET S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 115 7 22 Telconet
6503 113 147 74 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.
22927 97 81 26 TELEFONICA DE ARGENTINA
23216 97 24 22 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
21826 96 13 18 INTERCABLE
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 93 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 38 6 3 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
25364 19 1 3 Egypt Cyber Cenyer Network
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1139 915 Time Warner Telecom
18566 832 825 Covad Communications
721 1082 772 DLA Systems Automation Center
4134 961 766 CHINANET-BACKBONE
9583 776 762 Sify Limited
27364 554 536 Armstrong Cable Services
4755 668 522 Videsh Sanchar Nigam Ltd. Aut
6197 937 504 BellSouth Network Solutions,
7725 510 493 MediaOne
22773 503 480 Cox Communications, Inc.
5668 494 472 CenturyTel Internet Holdings,
3602 544 440 Sprint Canada, Inc.
7545 514 440 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 434 361 E.Spire Communications, Inc.
20115 652 331 Charter Communications
19262 432 319 Verizon Global Networks
9929 364 318 China Netcom Corp.
4766 590 312 Korea Telecom (KIX)
9443 382 305 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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 /15:603 /16:8462 /17:2641 /18:4520
/19:10532 /20:11480 /21:9494 /22:12989 /23:13902 /24:91079
/25:337 /26:281 /27:165 /28:51 /29:29 /30:77
/31:0 /32:34
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 816 832 Covad Communications
6197 763 937 BellSouth Network Solutions,
7018 701 1490 AT&T WorldNet Services
2386 602 889 AT&T Data Communications Serv
9583 592 776 Sify Limited
27364 545 554 Armstrong Cable Services
4323 540 1139 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 359 875 Sprint
6198 342 467 BellSouth Network Solutions,
7011 326 377 Citizens Utilities
19916 305 312 OLM LLC
15270 296 321 PaeTec.net -a division of Pae
6517 292 314 Yipes Communications, Inc.
6467 288 434 E.Spire Communications, Inc.
20115 283 652 Charter Communications
9929 276 364 China Netcom Corp.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:6 8:22 9:1 12:1556 13:1 15:9
16:2 17:3 18:3 20:4 24:1182 30:2
32:70 33:2 38:138 40:54 44:4 47:2
52:4 55:2 56:3 57:23 58:137 59:58
60:69 61:750 62:639 63:1882 64:2803 65:2067
66:2924 67:637 68:556 69:1110 70:146 71:10
72:271 80:590 81:588 82:437 83:294 84:224
85:297 86:62 87:17 128:158 129:167 130:88
131:294 132:38 133:1 134:145 135:42 136:138
137:73 138:159 139:61 140:305 141:105 142:148
143:137 144:199 145:34 146:290 147:110 148:290
149:177 150:107 151:65 152:108 153:88 154:5
155:140 156:78 157:99 158:165 159:167 160:78
161:70 162:218 163:94 164:193 165:187 166:156
167:242 168:438 169:144 170:323 171:8 172:1
190:1 192:5705 193:3204 194:2424 195:1596 196:655
198:3900 199:3287 200:4081 201:212 202:5918 203:6408
204:3791 205:2038 206:2424 207:2802 208:2046 209:3319
210:1700 211:803 212:1259 213:1338 214:272 215:31
216:3591 217:1123 218:212 219:183 220:392 221:249
222:121
End of report
