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

Successful domain registration requires:

  • two or more nameservers or a nameserver group
  • Registrant contact require:
    • Address within the EU, EEC or EE
    • Trustee service applied automatically, if registrant contact isn't located in EU, EEC or EE
    • For private individual
      • Passport or ID number
    • For companies
      • Company registration number


NOTE: Registration process is not realtime - can take up to 1-4 business days. If the Trustee service is chosen for the domain, the registration might take up to 4 business days as it has to be approved by the trustee first and only after that it will be forwarded for the registration.




Authorization code required yes
Method of confirmation authcode
Registration period after transfer extends
Average transfer time max 14 days
Advanced and simple transfers available Contact our Sales department to check if easy transfer of 100 or more .sk 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


  • Delete - via RCP or API. Processed real-time

Restore / reactivate

  • Registry: SK NIC
  • Registry whois: whois.sk-nic.sk
  • Registry web based whois: https://www.sk-nic.sk/
  • Registry zonefile updates: Every 2 hours
Technical information
  • DNSSEC support: no
  • Minimum length: 2 characters
  • Maximum length: 63 characters
  • Allowed characters: a-z 0-9 -
  • IDN characters: no
  • Registration period: 1 year
  • Renewal date offset: 3 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: n/a 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: 38 days
    During this period, an expired or deleted domain name can be reactivated at an additional fee.
  • Local presence required? yes
  • Does Openprovider provide local presence services? yes
  • Local activity required? no
  • Correct nameserver configuration required? yes
  • No special restrictions
  • Registrants from countries of EU, EEC or EEA are eligible to register.
  • All other registrant can use the Trustee Service. This will automatically be used when the registrant is not from the EU, EEC or EEA.
  • Passport or company registration number required
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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