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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 29 Jul, 2005
Analysis Summary
----------------
BGP routing table entries examined: 167517
Prefixes after maximum aggregation: 96509
Unique aggregates announced to Internet: 80934
Total ASes present in the Internet Routing Table: 20163
Origin-only ASes present in the Internet Routing Table: 17576
Origin ASes announcing only one prefix: 8276
Transit ASes present in the Internet Routing Table: 2587
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: 17
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1398929685
Equivalent to 83 /8s, 97 /16s and 249 /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: 79513
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34621
Total APNIC prefixes after maximum aggregation: 15841
Prefixes being announced from the APNIC address blocks: 32483
Unique aggregates announced from the APNIC address blocks: 16222
APNIC Region origin ASes present in the Internet Routing Table: 2315
APNIC Region origin ASes announcing only one prefix: 679
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192179584
Equivalent to 11 /8s, 116 /16s and 109 /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: 89763
Total ARIN prefixes after maximum aggregation: 54688
Prefixes being announced from the ARIN address blocks: 70182
Unique aggregates announced from the ARIN address blocks: 25893
ARIN Region origin ASes present in the Internet Routing Table: 10104
ARIN Region origin ASes announcing only one prefix: 3717
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: 254929429
Equivalent to 15 /8s, 49 /16s and 234 /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: 32329
Total RIPE prefixes after maximum aggregation: 22051
Prefixes being announced from the RIPE address blocks: 29315
Unique aggregates announced from the RIPE address blocks: 19680
RIPE Region origin ASes present in the Internet Routing Table: 6921
RIPE Region origin ASes announcing only one prefix: 3650
RIPE Region transit ASes present in the Internet Routing Table: 1139
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 212758144
Equivalent to 12 /8s, 174 /16s and 110 /24s
Percentage of available RIPE address space announced: 63.4
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: 9137
Total LACNIC prefixes after maximum aggregation: 3145
Prefixes being announced from the LACNIC address blocks: 7511
Unique aggregates announced from the LACNIC address blocks: 4390
LACNIC Region origin ASes present in the Internet Routing Table: 625
LACNIC Region origin ASes announcing only one prefix: 194
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: 23
Number of LACNIC addresses announced to Internet: 20614656
Equivalent to 1 /8s, 58 /16s and 142 /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: 1644
Total AfriNIC prefixes after maximum aggregation: 784
Prefixes being announced from the AfriNIC address blocks: 1014
Unique aggregates announced from the AfriNIC address blocks: 774
AfriNIC Region origin ASes present in the Internet Routing Table: 130
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: 2340608
Equivalent to 0 /8s, 35 /16s and 183 /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 765 1455 530 Telstra Pty Ltd
4755 663 248 144 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 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 296 23 153 Pakistan Telecom
4808 294 245 172 CNCGROUP IP network: China169
18302 283 109 157 SK Global co., Ltd
9837 278 80 182 Powertel Ltd
17974 271 65 14 PT TELEKOMUNIKASI INDONESIA
17488 267 16 8 Hathway IP Over Cable Interne
703 249 262 205 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 1126 5823 1046 Cogent Communications
721 1085 21779 311 DLA Systems Automation Center
701 1023 8172 865 UUNET Technologies, Inc.
6197 939 522 433 BellSouth Network Solutions,
2386 894 529 658 AT&T Data Communications Serv
1239 874 2879 632 Sprint
18566 833 224 7 Covad Communications
20115 652 499 321 Charter Communications
209 622 3471 492 Qwest
3356 562 10765 431 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 546 123 104 Sprint Canada, Inc.
3561 535 2384 421 Savvis
7725 511 64 17 MediaOne
22773 503 1188 23 Cox Communications, Inc.
5668 498 115 23 CenturyTel Internet Holdings,
852 479 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 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
6746 175 49 153 Dynamic Network Technologies,
5400 174 288 146 BT Ignite European Backbone
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 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 378 599 158 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 145 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 101 13 18 INTERCABLE
23216 97 24 22 RAMtelecom Telecomunicaciones
5639 96 12 9 Telecommunications Services o
22927 96 73 25 TELEFONICA DE ARGENTINA
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 98 295 89 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 833 826 Covad Communications
721 1085 774 DLA Systems Automation Center
4134 954 761 CHINANET-BACKBONE
9583 774 760 Sify Limited
27364 554 536 Armstrong Cable Services
4755 663 519 Videsh Sanchar Nigam Ltd. Aut
6197 939 506 BellSouth Network Solutions,
7725 511 494 MediaOne
22773 503 480 Cox Communications, Inc.
5668 498 475 CenturyTel Internet Holdings,
3602 546 442 Sprint Canada, Inc.
7545 514 440 TPG Internet Pty Ltd
17676 463 365 Softbank BB Corp.
6467 430 357 E.Spire Communications, Inc.
20115 652 331 Charter Communications
19262 431 317 Verizon Global Networks
4766 590 312 Korea Telecom (KIX)
9443 382 305 Primus Telecommunications
6140 398 298 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 /15:607 /16:8468 /17:2659 /18:4540
/19:10542 /20:11505 /21:9526 /22:13038 /23:13903 /24:91114
/25:353 /26:299 /27:174 /28:51 /29:26 /30:75
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 817 833 Covad Communications
6197 765 939 BellSouth Network Solutions,
7018 702 1491 AT&T WorldNet Services
2386 605 894 AT&T Data Communications Serv
9583 591 774 Sify Limited
27364 545 554 Armstrong Cable Services
4323 541 1138 Time Warner Telecom
7725 481 511 MediaOne
4766 408 590 Korea Telecom (KIX)
5668 403 498 CenturyTel Internet Holdings,
702 365 592 UUNET - Commercial IP service
1239 361 874 Sprint
6198 342 467 BellSouth Network Solutions,
19916 337 344 OLM LLC
7011 327 378 Citizens Utilities
15270 296 321 PaeTec.net -a division of Pae
6517 294 316 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 8:23 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 58:143 59:59
60:68 61:747 62:643 63:1884 64:2801 65:2063
66:2921 67:640 68:558 69:1115 70:151 71:10
72:275 80:581 81:570 82:437 83:297 84:225
85:303 86:68 87:18 128:161 129:168 130:85
131:294 132:38 133:1 134:146 135:42 136:138
137:73 138:164 139:61 140:303 141:107 142:147
143:141 144:203 145:34 146:291 147:109 148:289
149:177 150:107 151:65 152:108 153:88 154:5
155:141 156:79 157:99 158:165 159:167 160:80
161:70 162:218 163:94 164:192 165:186 166:156
167:241 168:438 169:144 170:324 171:8 172:1
190:1 192:5740 193:3235 194:2431 195:1604 196:662
198:3897 199:3291 200:4092 201:224 202:5875 203:6350
204:3804 205:2021 206:2449 207:2806 208:2046 209:3331
210:1654 211:758 212:1269 213:1353 214:275 215:32
216:3615 217:1125 218:212 219:158 220:404 221:251
222:124
End of report
