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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 23 May, 2005
Analysis Summary
----------------
BGP routing table entries examined: 162684
Prefixes after maximum aggregation: 94491
Unique aggregates announced to Internet: 78499
Total ASes present in the Internet Routing Table: 19679
Origin-only ASes present in the Internet Routing Table: 17120
Origin ASes announcing only one prefix: 8031
Transit ASes present in the Internet Routing Table: 2559
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 5
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1408130368
Equivalent to 83 /8s, 238 /16s and 93 /24s
Percentage of available address space announced: 38.0
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 76473
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 33393
Total APNIC prefixes after maximum aggregation: 15688
Prefixes being announced from the APNIC address blocks: 31297
Unique aggregates announced from the APNIC address blocks: 15878
APNIC Region origin ASes present in the Internet Routing Table: 2270
APNIC Region origin ASes announcing only one prefix: 665
APNIC Region transit ASes present in the Internet Routing Table: 345
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 183484032
Equivalent to 10 /8s, 239 /16s and 190 /24s
Percentage of available APNIC address space announced: 68.1
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: 88256
Total ARIN prefixes after maximum aggregation: 53705
Prefixes being announced from the ARIN address blocks: 68879
Unique aggregates announced from the ARIN address blocks: 25322
ARIN Region origin ASes present in the Internet Routing Table: 9947
ARIN Region origin ASes announcing only one prefix: 3626
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: 248639488
Equivalent to 14 /8s, 209 /16s and 240 /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: 30695
Total RIPE prefixes after maximum aggregation: 21274
Prefixes being announced from the RIPE address blocks: 27794
Unique aggregates announced from the RIPE address blocks: 18623
RIPE Region origin ASes present in the Internet Routing Table: 6648
RIPE Region origin ASes announcing only one prefix: 3510
RIPE Region transit ASes present in the Internet Routing Table: 1118
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 204792000
Equivalent to 12 /8s, 52 /16s and 224 /24s
Percentage of available RIPE address space announced: 71.8
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: 8696
Total LACNIC prefixes after maximum aggregation: 3057
Prefixes being announced from the LACNIC address blocks: 7103
Unique aggregates announced from the LACNIC address blocks: 4127
LACNIC Region origin ASes present in the Internet Routing Table: 621
LACNIC Region origin ASes announcing only one prefix: 194
LACNIC Region transit ASes present in the Internet Routing Table: 113
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 18901248
Equivalent to 1 /8s, 32 /16s and 105 /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: 1633
Total AfriNIC prefixes after maximum aggregation: 767
Prefixes being announced from the AfriNIC address blocks: 998
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: 2277376
Equivalent to 0 /8s, 34 /16s and 192 /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 908 5141 187 CHINANET-BACKBONE
1221 752 1182 540 Telstra Pty Ltd
9583 733 54 79 Sify Limited
4755 603 246 123 Videsh Sanchar Nigam Ltd. Aut
4766 591 3413 279 Korea Telecom (KIX)
7545 499 88 72 TPG Internet Pty Ltd
17676 431 6509 73 Softbank BB Corp.
9443 370 77 76 Primus Telecommunications
9929 360 197 46 China Netcom Corp.
2907 345 1838 319 SINET Japan
10036 321 29 288 C&M Communication Co. Ltd.
17557 314 22 151 Pakistan Telecom
4808 308 249 168 CNCGROUP IP network: China169
7474 307 270 210 SingTel Optus Pty Ltd
9498 293 83 59 BHARTI BT INTERNET LTD.
4802 286 48 164 Wantree Development
17974 259 65 14 PT TELEKOMUNIKASI INDONESIA
703 255 277 212 UUNET - Commercial IP service
18302 255 107 142 SK Global co., Ltd
2764 252 238 197 AAPT Limited
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1477 6455 959 AT&T WorldNet Services
174 1169 5609 1000 Cogent Communications
721 1113 21755 312 DLA Systems Automation Center
4323 1112 647 217 Time Warner Telecom
701 1020 8202 858 UUNET Technologies, Inc.
6197 908 380 464 BellSouth Network Solutions,
1239 896 2869 651 Sprint
2386 854 532 636 AT&T Data Communications Serv
18566 812 224 7 Covad Communications
209 650 3521 492 Qwest
20115 599 505 314 Charter Communications
3356 580 10842 437 Level 3 Communications, LLC
27364 565 43 18 Armstrong Cable Services
3561 532 2384 418 Savvis
852 530 1095 391 Telus Advanced Communications
3602 524 123 99 Sprint Canada, Inc.
5668 487 115 25 CenturyTel Internet Holdings,
22773 483 1188 20 Cox Communications, Inc.
6198 468 445 210 BellSouth Network Solutions,
7725 450 60 15 MediaOne
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 595 2003 487 UUNET - Commercial IP service
3320 302 3233 236 Deutsche Telekom AG
3301 294 1084 282 TeliaNet Sweden
8220 274 469 268 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 200 728 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
6746 165 47 144 Dynamic Network Technologies,
3269 164 1488 69 TELECOM ITALIA
8866 164 21 11 Bulgarian Telecommunication C
5400 162 285 136 BT Ignite European Backbone
719 160 340 102 LANLINK autonomous system
3300 153 184 86 AUCS Communications Services
6830 137 513 27 UPC Distribution Services
25186 136 137 96 France Telecom Transpac's Tra
9051 131 8 30 INCONET Autonomous System
2856 128 2305 116 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 371 598 150 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 177 102 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 102 146 72 AVANTEL, S.A.
10481 101 40 7 Prima S.A.
19169 100 6 17 Telconet
22927 97 73 25 TELEFONICA DE ARGENTINA
23216 94 24 23 RAMtelecom Telecomunicaciones
21826 92 12 18 INTERCABLE
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
20928 93 16 2 Noor Advanced Technologies AS
2018 90 295 86 Tertiary Education Network
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
10798 19 1 11 Standard Bank of South Africa
33765 19 3 8 TANZANIA TELECOMMUNICATIONS C
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 1112 895 Time Warner Telecom
18566 812 805 Covad Communications
721 1113 801 DLA Systems Automation Center
4134 908 721 CHINANET-BACKBONE
9583 733 654 Sify Limited
27364 565 547 Armstrong Cable Services
4755 603 480 Videsh Sanchar Nigam Ltd. Aut
22773 483 463 Cox Communications, Inc.
5668 487 462 CenturyTel Internet Holdings,
6197 908 444 BellSouth Network Solutions,
7725 450 435 MediaOne
7545 499 427 TPG Internet Pty Ltd
3602 524 425 Sprint Canada, Inc.
6467 422 387 E.Spire Communications, Inc.
17676 431 358 Softbank BB Corp.
6140 407 330 ImpSat
9929 360 314 China Netcom Corp.
4766 591 312 Korea Telecom (KIX)
9443 370 294 Primus Telecommunications
20115 599 285 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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 /12:70
/13:154 /14:306 /15:600 /16:8392 /17:2554 /18:4392
/19:10334 /20:11167 /21:9052 /22:12508 /23:13486 /24:88724
/25:289 /26:248 /27:138 /28:68 /29:41 /30:81
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 796 812 Covad Communications
6197 746 908 BellSouth Network Solutions,
7018 677 1477 AT&T WorldNet Services
2386 604 854 AT&T Data Communications Serv
27364 556 565 Armstrong Cable Services
9583 550 733 Sify Limited
4323 529 1112 Time Warner Telecom
7725 423 450 MediaOne
4766 408 591 Korea Telecom (KIX)
5668 402 487 CenturyTel Internet Holdings,
1239 377 896 Sprint
702 366 595 UUNET - Commercial IP service
6198 340 468 BellSouth Network Solutions,
10036 321 321 C&M Communication Co. Ltd.
7011 301 351 Citizens Utilities
6517 299 322 Yipes Communications, Inc.
6467 297 422 E.Spire Communications, Inc.
9929 281 360 China Netcom Corp.
11456 280 321 Carolina Online, Inc.
15270 264 284 PaeTec.net -a division of Pae
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:13 12:1552 13:1 15:9 16:2
17:3 18:4 20:4 24:1141 30:2 32:68
33:4 38:118 40:53 44:3 47:2 52:4
55:2 56:3 57:21 58:88 59:38 60:38
61:799 62:610 63:1884 64:2750 65:2067 66:2885
67:575 68:528 69:1030 70:108 71:10 72:197
80:562 81:537 82:409 83:258 84:187 85:203
86:16 128:178 129:172 130:83 131:279 132:36
133:1 134:150 135:40 136:189 137:64 138:169
139:57 140:194 141:105 142:149 143:145 144:186
145:33 146:282 147:106 148:296 149:165 150:97
151:65 152:106 153:86 154:5 155:143 156:77
157:94 158:161 159:169 160:94 161:72 162:194
163:87 164:207 165:174 166:156 167:233 168:424
169:139 170:315 171:8 172:2 192:5719 193:3141
194:2374 195:1554 196:656 198:3935 199:3277 200:3894
201:134 202:5593 203:6207 204:3823 205:2003 206:2474
207:2800 208:2049 209:3291 210:1683 211:827 212:1154
213:1284 214:264 215:31 216:3451 217:1128 218:200
219:106 220:372 221:219 222:103
End of report
