This article describes the procedures and requirements of .cz domain names.
Click on the subject below to open the dropdown for more information.

Successful domain registration via RCP or API requires:

  • two or more nameservers or a nameserver group

Successful domain transfer via RCP or API requires:

  • authorisation code
  • two or more nameservers or a nameserver group

A transfer is realtime. The registration period after a successful transfer will not change.

Additional notes on a .cz transfer

  • If the current registrar cannot or does not want to provide you with the authorization code of the domain name, you can also request this directly via the .CZ Registry website: https://www.nic.cz/whois/send-password/ .
Authorization code required yes
Method of confirmation authcode
Registration period after transfer unchanged
Average transfer time Realtime
Advanced and simple transfers available Contact our Sales department to check if easy transfer of 100 or more .cz domains is available.

Owner change (trade)

  • Trade - via RCP or API, by updating the owner handle. Process is real-time

Other update

  • Domain updates - via RCP or API. Processed real-time


Due to automatic cleanup processes of the Czech registry, sometimes a domain contact received an e-mail with subject "Oznámení o zrušení sady nameserverů ... / Notification of NS set ... deletion" or about the "Cancellation of the contact" which is not in use.

Such e-mail does not impact domain availability and can be ignored.


Explicit delete

  • requested via RCP or API
  • processed realtime
  • will be available for new registration immediately (no quarantine or redemption period applies)

In case the domain expires (not renewed in time):

  • will lead to soft quarantine for 60 days, after which the domain is released for new registration

Restore / reactivate

  • Restore / reactivation supported via RCP or API
  • If 60 days of Soft Quarantine has passed, the domain can no longer be restored.
Technical information
  • DNSSEC support: yes
  • Minimum number of characters: 1
  • Maximum number of characters: 63
  • Letters and numbers: a-z 0-9 -
  • IDN: not supported
  • Registration period: 1 – 10 years
  • Renewal date offset: 0 days
    The number of days before the registry's expiration date, that Openprovider requires the domain to be renewed or expired. More info.
    Note that the dates as shown in your Openprovider account are always leading, even if they do not match the renewal date offset mentioned here.
  • Soft quarantine period: 60 days
    During this period, following after an expiration, the domain can be restored for free. This period does not apply if the domain is deleted explicitly. More info.
  • Quarantine period: 0 days
    During this period, an expired or deleted domain name can be reactivated at an additional fee.
  • Local presence required? no
  • Does Openprovider provide local presence services? n/a
  • Local activity required? no
  • Correct nameserver configuration required? no
  • The Domain(s) can be registered without further limitations.
Registration agreement The registry requires that a registration agreement is in place between the provider and the domain holder. The text of this registration agreement and any required supplements is the following:

Due to the regular changes in registry rules and configuration or missing information from registry side, and despite our effort to keep our knowledge base up-to-date, information in the knowledge base may be outdated or incorrect. If you encounter some issue, please report it through the "HotJar" feedback collector on the bottom right, or (if it is blocked by your browser) by clicking the "Submit a request" link below. No rights can be derived from the information in this knowledge base. If there is discrepancy between the knowledge base and the process in Openprovider, the process in Openprovider is leading.

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