Search in the WHOIS registryNápověda

WHOIS searches domain names, contacts, and nameserver sets.

• Enter domain names with the .CZ suffix and without the leading "www" (e.g., nic.cz).

• Enter contact identifiers or nameserver set identifiers as plain text.

• Using this form, you can search only for domains in the .CZ and 0.2.4.e164.arpa zones.

The permitted use of the provided services is defined in the Intended use of supplied data and information document.

Searching for a domain in another zone

For this type of query, you can use the IANA WHOIS service.

IANA WHOIS is a service operated by the Internet Assigned Numbers Authority (IANA) that allows you to determine which organization is responsible for managing a particular IP address or Internet resource at the highest level.

Unlike the standard domain WHOIS service (which provides information about a domain's registration), IANA WHOIS primarily indicates which Regional Internet Registry (RIR) is responsible for the given IP address range.