AS Name
CTB
Org Name
CTB Media Inc.
Registry Region
Japan
Looking Glass
IPv4Prefixes

5

IPv6Prefixes

1

IPv4 NUMs

16,384

IPv6 NUMs(/64)

4,294,967,296

16,384 IPv4 Addresses
CIDR Description IP Num
49.128.24.0/21 CTB CTB Media Inc. 2048
49.128.96.0/22 CTB CTB Media Inc. 1024
203.201.52.0/22 CTB CTB Media Inc. 1024
211.15.112.0/20 JPNIC-NET-JP Japan Network Information Center 4096
211.19.224.0/19 JPNIC-NET-JP Japan Network Information Center 8192
CIDR Description IP NUMs(prefix /64)
2402:6c80::/32 CTB-JPNIC-JP-20150601 Japan Network Information Center 4294967296
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS2497 IIJ - Internet Initiative Japan Inc., JP Japan 3,801,600 17,716,740,096 IPv4 IPv4 IPv6 IPv6
AS9957 KINX-AS - KINX, KR Republic of Korea 6,296 0 IPv4 IPv4
AS23815 JPIX-RS - Japan Internet Exchange Co., Ltd., JP Japan 0 0 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 22,784 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS36236 NETACTUATE - NetActuate, Inc, US United States 99,328 5,933,629,440 IPv4 IPv4
AS1239 SPRINTLINK - Sprint, US United States 17,033,984 60,129,542,144 IPv4 IPv4
AS38001 NEWMEDIAEXPRESS-AS-AP - NewMedia Express Pte Ltd, SG Singapore 24,832 4,295,294,976 IPv6 IPv6
AS2519 VECTANT - ARTERIA Networks Corporation, JP Japan 1,700,096 103,079,215,104 IPv4 IPv4 IPv6 IPv6
AS6233 XTOM, US United States 5,376 1,179,648 IPv4 IPv4
AS6939 HURRICANE - Hurricane Electric LLC, US United States 514,816 282,635,155,472,384 IPv4 IPv4
AS8220 COLT - COLT Technology Services Group Limited, GB United Kingdom 1,136,128 17,180,327,936 IPv4 IPv4
AS17676 GIGAINFRA - Softbank BB Corp., JP Japan 43,557,376 18,695,992,639,488 IPv4 IPv4 IPv6 IPv6
AS9009 M247 - M247 Ltd, GB United Kingdom 988,672 339,397,378,304 IPv4 IPv4
AS25152 K-ROOT-SERVER - Reseaux IP Europeens Network Coordination Centre (RIPE NCC), NL Netherlands 512 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS35280 ACORUS - ACORUS NETWORKS SAS, FR France 7,680 81,604,378,624 IPv4 IPv4
AS7713 telkomnet-as-ap - Telekomunikasi Indonesia (PT), ID Indonesia 3,387,392 12,888,178,688 IPv6 IPv6

Peers at this Exchange Point

Country/Region IX IPv4 IPv6 Port Speed Updated
Japan JPNAP Tokyo - JPNAP Tokyo 210.173.176.193 2001:7fa:7:1:0:2:3780:1 10 Gbps 2017-06-15 04:56:29
Japan BBIX Tokyo - BroadBand Internet eXchange Tokyo 218.100.6.100 2001:de8:c::2:3780:1 10 Gbps 2018-11-15 12:47:34
Japan JPIX TOKYO - Japan Internet Exchange Tokyo 210.171.224.191 2001:de8:8::2:3780:1 10 Gbps 2020-04-22 00:47:20
Japan JPNAP Osaka - JPNAP Osaka 210.173.178.13 2001:7fa:7:2:0:2:3780:1 10 Gbps 2019-07-26 02:42:57

Private Peering Facilities

Country/Region Name City Website Updated
ComSpace I Tokyo https://www.arteria-net.com/en/business/service/datacenter/ 2016-03-14 21:56:08
NTT DATA Dojima (building #4) Osaka http://www.nttdata.com/ 2019-07-26 02:43:00
IP Address Domain NUMs Domains
211.15.112.69 1 enterprise.ctb.ne.jp
211.15.112.70 1 kitty-hawk.ctb.ne.jp
211.15.112.86 2 supportweb.ctb.ne.jp
211.15.114.77 1 zhs.lauriemillotte.com
211.15.116.51 3 beppu-ja.org
211.15.117.17 1 beta.ctb.ne.jp
211.15.117.20 2 mail.ctb.jp
211.15.117.33 1 community.ctb.ne.jp
211.15.117.34 1 streaming.ctb.ne.jp
211.15.117.38 1 weblive.ctb.ne.jp
as-block:       AS23552 - AS24575
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
remarks:        AS23889 has been transfered to AfriNIC
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         [email protected]
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         [email protected]
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC


as-block:       AS23773 - AS23836
descr:          JPNIC-2Byte-ASBLOCK-AP
descr:          for assignment to JPNIC members
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        Authoritative information regarding AS Number
remarks:        assignments made from within this block can be
remarks:        queried at whois.nic.ad.jp. To only display English output,
remarks:        add '/e' at the end of command,
remarks:        e.g. 'whois -h whois.nic.ad.jp xxx/e'.
mnt-by:         APNIC-HM
mnt-lower:      MAINT-JPNIC
last-modified:  2009-11-19T01:11:45Z
source:         APNIC

role:           Japan Network Information Center
address:        Urbannet-Kanda Bldg 4F
address:        3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047,Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         [email protected]
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2012-08-28T07:58:02Z
source:         APNIC


aut-num:        AS23780
as-name:        CTB
descr:          CTB Media Inc.
import:
export:
country:        JP
admin-c:        TN1078JP
tech-c:         TN1078JP
last-modified:  2003-08-13T22:02:03Z
source:         JPNIC