Czech Telecommunication Office
AS201594 is Czech Telecommunication Office (ctu.cz). It announces 256 IPv4 addresses in 1 prefix, and 1 IPv6 prefix.
Czechia· RIPE NCC· allocated 2014-09-12· Government
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Czechia256 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- CTU_AS4
- name
- Czech Telecommunication Office
- org
- ORG-CTO1-RIPE
- org name
- Czech Telecommunication Office
- org address
- Sokolovska 219, 19000, Prague, CZECH REPUBLIC
- org country
- CZ
- country
- CZ
- source
- ripe
- status
- ASSIGNED
- created
- 2014-09-12
- updated
- 2025-07-04
- descr
- NIX.CZ / NIX.CZ
- maintainer
- RIPE-NCC-END-MNT|SUPER-CTU
- abuse name
- Abuse Contact
- abuse email
- schmieds@ctu.cz
- abuse kind
- role
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.
- 1.17%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- Web IP145.47%
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 185.68.215.0/24 | Czechia | Not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2a05:1c47::/32 | Czechia | Not found | 19 | 2026-10-02 |
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