CTB Media Inc.
AS23780 is CTB Media Inc. (ctb.jp). It announces 16,384 IPv4 addresses in 5 prefixes, and 1 IPv6 prefixes.
Japan· APNIC· allocated 2003-06-16· isp
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Japan16,384 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- CTB
- name
- CTB Media Inc.
- country
- JP
- source
- apnic
- updated
- 2024-08-16
- descr
- CTB Media Inc. / 7-1 horita, beppu-shi
- remarks
- Email address for spam or abuse complaints : abuse@ctb.ne.jp
- maintainer
- MAINT-JPNIC
- maintainer email
- hostmaster@nic.ad.jp
- abuse email
- hostmaster@nic.ad.jp
- abuse phone
- +81-3-5297-2311
- abuse kind
- irt
- admin
- JNIC1-AP
- admin name
- Japan Network Information Center
- admin email
- hostmaster@nic.ad.jp
- admin phone
- +81-3-5297-2312
- admin kind
- role
- admin country
- JP
- tech
- JNIC1-AP
- tech name
- Japan Network Information Center
- tech email
- hostmaster@nic.ad.jp
- tech phone
- +81-3-5297-2312
- tech kind
- role
- tech country
- JP
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP41alliedtelesis, vpngate0.25%
- anyip, dataimpulse, floppydata0.18%
- None here
- None here
- None here
- None here
- Hosting IP2561.56%
- None here
- None here
- None here
- 0.02%
- None here
- 0.05%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2402:6c80::/32 | Japan | not found | 20 | 2026-10-02 |
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