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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 08 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 155568
Prefixes after maximum aggregation: 91755
Unique aggregates announced to Internet: 75325
Total ASes present in the Internet Routing Table: 19272
Origin-only ASes present in the Internet Routing Table: 16768
Origin ASes announcing only one prefix: 7843
Transit ASes present in the Internet Routing Table: 2504
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 32
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1318962816
Equivalent to 78 /8s, 157 /16s and 198 /24s
Percentage of available address space announced: 35.6
Percentage of allocated address space announced: 55.9
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 72650
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 28872
Total APNIC prefixes after maximum aggregation: 14248
Prefixes being announced from the APNIC address blocks: 26809
Unique aggregates announced from the APNIC address blocks: 14058
APNIC Region origin ASes present in the Internet Routing Table: 2199
APNIC Region origin ASes announcing only one prefix: 668
APNIC Region transit ASes present in the Internet Routing Table: 333
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 120723072
Equivalent to 7 /8s, 50 /16s and 22 /24s
Percentage of available APNIC address space announced: 44.8
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: 86544
Total ARIN prefixes after maximum aggregation: 52912
Prefixes being announced from the ARIN address blocks: 67541
Unique aggregates announced from the ARIN address blocks: 24821
ARIN Region origin ASes present in the Internet Routing Table: 9808
ARIN Region origin ASes announcing only one prefix: 3543
ARIN Region transit ASes present in the Internet Routing Table: 922
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 243746560
Equivalent to 14 /8s, 135 /16s and 71 /24s
Percentage of available ARIN address space announced: 69.2
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
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: 30184
Total RIPE prefixes after maximum aggregation: 20893
Prefixes being announced from the RIPE address blocks: 27228
Unique aggregates announced from the RIPE address blocks: 18160
RIPE Region origin ASes present in the Internet Routing Table: 6502
RIPE Region origin ASes announcing only one prefix: 3417
RIPE Region transit ASes present in the Internet Routing Table: 1091
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 200742336
Equivalent to 11 /8s, 247 /16s and 21 /24s
Percentage of available RIPE address space announced: 70.4
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, 88/8, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 8521
Total LACNIC prefixes after maximum aggregation: 3000
Prefixes being announced from the LACNIC address blocks: 6899
Unique aggregates announced from the LACNIC address blocks: 4010
LACNIC Region origin ASes present in the Internet Routing Table: 611
LACNIC Region origin ASes announcing only one prefix: 190
LACNIC Region transit ASes present in the Internet Routing Table: 111
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 18014720
Equivalent to 1 /8s, 18 /16s and 226 /24s
Percentage of available LACNIC address space announced: 53.7
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1409
Total AfriNIC prefixes after maximum aggregation: 702
Prefixes being announced from the AfriNIC address blocks: 912
Unique aggregates announced from the AfriNIC address blocks: 727
AfriNIC Region origin ASes present in the Internet Routing Table: 98
AfriNIC Region origin ASes announcing only one prefix: 25
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2194432
Equivalent to 0 /8s, 33 /16s and 124 /24s
Percentage of available AfriNIC address space announced: 13.1
AfriNIC AS Blocks ERX transfers
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 778 1193 553 Telstra Pty Ltd
4134 636 2627 139 CHINANET-BACKBONE
9583 585 44 11 Sify Limited
4755 482 211 112 Videsh Sanchar Nigam Ltd. Aut
4766 413 1957 167 Korea Telecom (KIX)
9443 370 77 76 Primus Telecommunications
2907 348 1839 322 SINET Japan
17557 336 24 155 Pakistan Telecom
9929 311 151 27 China Netcom Corp.
10036 309 28 281 C&M Communication Co. Ltd.
7474 295 268 213 SingTel Optus Pty Ltd
4802 282 47 166 Wantree Development
9498 261 82 53 BHARTI BT INTERNET LTD.
703 252 273 207 UUNET - Commercial IP service
2764 252 238 201 AAPT Limited
7545 244 51 36 TPG Internet Pty Ltd
4808 234 171 131 CNCGROUP IP network: China169
18302 218 42 130 SK Global co., Ltd
7563 216 48 159 Korea Internet Infrastructure
17488 213 15 11 Hathway IP Over Cable Interne
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1473 6530 965 AT&T WorldNet Services
721 1118 21763 314 DLA Systems Automation Center
4323 1091 663 220 Time Warner Telecom
174 1081 5584 919 Cogent Communications
701 1009 8266 858 UUNET Technologies, Inc.
1239 915 2877 661 Sprint
6197 886 384 414 BellSouth Network Solutions,
2386 842 532 624 AT&T Data Communications Serv
18566 788 224 7 Covad Communications
209 647 3475 500 Qwest
20115 600 496 311 Charter Communications
3356 585 10852 434 Level 3 Communications, LLC
3561 540 2368 414 Savvis
852 538 1095 397 Telus Advanced Communications
3602 508 121 93 Sprint Canada, Inc.
27364 504 43 18 Armstrong Cable Services
5668 478 115 25 CenturyTel Internet Holdings,
22773 474 1188 21 Cox Communications, Inc.
6198 459 380 215 BellSouth Network Solutions,
6467 447 143 35 E.Spire Communications, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 598 2003 489 UUNET - Commercial IP service
3320 302 2993 236 Deutsche Telekom AG
3301 298 1117 288 TeliaNet Sweden
8220 276 468 269 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 232 476 226 Song Networks
8708 227 251 208 Romania Data Systems S.A.
1257 200 696 176 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 167 1472 73 TELECOM ITALIA
8866 166 21 12 Bulgarian Telecommunication C
6746 161 47 141 Dynamic Network Technologies,
719 157 322 99 LANLINK autonomous system
3300 152 184 85 AUCS Communications Services
5400 142 281 126 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 137 513 27 UPC Distribution Services
9051 128 8 34 INCONET Autonomous System
2856 127 2305 115 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 350 529 146 UniNet S.A. de C.V.
16814 234 14 7 NSS, S.A.
11172 215 99 52 Servicios Alestra S.A de C.V
6147 191 100 22 Telefonica Del Peru
19632 190 14 7 Metropolis Intercom S.A.
7303 156 68 25 Telecom Argentina Stet-France
11664 153 19 23 Keytech SA
6505 131 90 88 Global One Communicaoes Ltda
22047 122 96 6 VTR PUNTO NET S.A.
14117 119 8 4 Telefonica del Sur S.A.
6503 106 146 75 AVANTEL, S.A.
18822 103 6 15 TELEFONICA MANQUEHUE
13999 100 52 9 Mega Cable S.A. de C.V.
11556 99 49 5 Cable-Wireless Panama
19169 95 6 16 Telconet
23216 88 24 23 RAMtelecom Telecomunicaciones
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
10481 82 32 7 Prima S.A.
4270 79 18 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 117 15 17 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 74 266 68 The Internetworking Company o
8452 60 20 5 TEDATA
24835 59 34 6 RAYA Telecom - Egypt
9129 42 3 3 UUNET Kenya
12455 41 7 4 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 24 1 4 AUCEGYPT Autonomous System
15475 22 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 18 3 5 LIA Internet Access
21280 18 2 3 Swift Global Kenya Ltd.Is an
12258 17 3 11 Vodacom Internet Company
15808 16 1 1 Communication Solutions Ltd i
21491 16 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65530 *
4323 1091 871 Time Warner Telecom
721 1118 804 DLA Systems Automation Center
18566 788 781 Covad Communications
9583 585 574 Sify Limited
4134 636 497 CHINANET-BACKBONE
27364 504 486 Armstrong Cable Services
6197 886 472 BellSouth Network Solutions,
5668 478 453 CenturyTel Internet Holdings,
22773 474 453 Cox Communications, Inc.
3602 508 415 Sprint Canada, Inc.
6467 447 412 E.Spire Communications, Inc.
4755 482 370 Videsh Sanchar Nigam Ltd. Aut
6140 383 312 ImpSat
9443 370 294 Primus Telecommunications
20115 600 289 Charter Communications
6478 378 288 AT&T Worldnet Services
9929 311 284 China Netcom Corp.
376 391 276 Reseau Interordinateurs Scien
11456 311 264 Carolina Online, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
35864 UNALLOCATED 38.117.202.0/24 174 Cogent Communication
35884 UNALLOCATED 38.118.171.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.164.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.165.0/24 10912 InterNAP Network Ser
35884 UNALLOCATED 64.74.166.0/24 10912 InterNAP Network Ser
35892 UNALLOCATED 64.124.52.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.105.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.106.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 64.125.110.0/24 6461 AboveNet Communicati
35868 UNALLOCATED 65.88.163.192/26 6395 Broadwing Communicat
35871 UNALLOCATED 66.7.178.0/23 6517 Yipes Communications
35868 UNALLOCATED 68.143.179.64/26 6395 Broadwing Communicat
35895 UNALLOCATED 72.5.143.0/24 10910 InterNAP Network Ser
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
35857 UNALLOCATED 199.107.188.0/24 4323 Time Warner Telecom
35875 UNALLOCATED 204.117.76.0/24 1239 Sprint
35892 UNALLOCATED 208.184.1.0/24 6461 AboveNet Communicati
35850 UNALLOCATED 209.139.6.0/24 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.22.0/23 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.56.0/22 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.108.0/23 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.110.0/24 3356 Level 3 Communicatio
35850 UNALLOCATED 209.139.180.0/24 3356 Level 3 Communicatio
35892 UNALLOCATED 209.249.93.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 209.249.94.0/24 6461 AboveNet Communicati
35892 UNALLOCATED 209.249.95.0/24 6461 AboveNet Communicati
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
35892 UNALLOCATED 216.14.0.0/19 6461 AboveNet Communicati
65529 PRIVATE 216.21.199.0/24 14697 VDot.Net
65529 PRIVATE 216.152.237.0/24 14697 VDot.Net
35892 UNALLOCATED 216.200.243.0/24 6461 AboveNet Communicati
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
192.44.0.0/24 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 /8:18 /9:3 /10:8 /11:14 /12:63
/13:132 /14:284 /15:522 /16:7875 /17:2324 /18:3992
/19:9705 /20:10524 /21:8434 /22:11691 /23:12913 /24:86194
/25:273 /26:261 /27:132 /28:72 /29:37 /30:68
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 772 788 Covad Communications
6197 727 886 BellSouth Network Solutions,
7018 654 1473 AT&T WorldNet Services
2386 596 842 AT&T Data Communications Serv
4323 507 1091 Time Warner Telecom
27364 491 504 Armstrong Cable Services
9583 406 585 Sify Limited
5668 402 478 CenturyTel Internet Holdings,
1239 381 915 Sprint
702 365 598 UUNET - Commercial IP service
6198 336 459 BellSouth Network Solutions,
6467 325 447 E.Spire Communications, Inc.
10036 309 309 C&M Communication Co. Ltd.
6517 289 312 Yipes Communications, Inc.
7011 280 329 Citizens Utilities
11456 264 311 Carolina Online, Inc.
15270 251 270 PaeTec.net -a division of Pae
9929 248 311 China Netcom Corp.
3320 247 302 Deutsche Telekom AG
4766 246 413 Korea Telecom (KIX)
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 10:6 12:1517 13:1 15:9
16:2 17:3 18:4 20:4 24:795 28:2
31:1 32:64 33:4 38:104 40:53 44:7
47:2 52:12 55:3 56:3 57:23 58:37
59:22 60:25 61:739 62:574 63:1879 64:2642
65:2080 66:2743 67:519 68:508 69:963 70:79
71:6 72:127 80:539 81:527 82:371 83:255
84:139 85:166 128:140 129:160 130:89 131:281
132:33 133:1 134:145 135:41 136:192 137:67
138:164 139:55 140:193 141:106 142:137 143:129
144:173 145:32 146:281 147:102 148:293 149:169
150:97 151:63 152:107 153:87 154:4 155:144
156:69 157:89 158:167 159:172 160:73 161:60
162:201 163:83 164:202 165:159 166:153 167:228
168:416 169:137 170:311 171:8 172:2 192:5669
193:3112 194:2321 195:1546 196:636 198:3912 199:3272
200:3965 201:80 202:5434 203:6064 204:3816 205:2015
206:2439 207:2729 208:2081 209:3277 210:1673 211:833
212:1178 213:1276 214:243 215:31 216:3687 217:1154
218:186
End of report
