.sk
.sk is a country-code extension for Slovakia, run by SK-NIC, a.s.. SK-NIC, a.s. sets who can register .sk names; some country codes need a local address, so check its rules before you buy.
| Type | Country code |
|---|---|
| Registry operator | SK-NIC, a.s. |
| Country | Slovakia |
| Who can register | Set by the registry |
| DNSSEC | Signed |
| RDAP server | None listed |
| WHOIS server | whois.sk-nic.sk |
| IANA record | iana.org/domains/root/db/sk |
Registrars that sell .sk
| Integrated | |
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| Not reviewed |
From the list of domain registrars. Other registrars may sell it too.
Look up a .sk domain
The .sk registry publishes registration data over WHOIS. The free domain report reads it and shows a .sk domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.
New to extensions? The guide to how domain extensions work covers generic, country-code and brand extensions. For who sells extensions in general, see the list of domain registrars.
Sources: the IANA root zone database and the ICANN list of generic extensions (refreshed 2026-10-24). Something out of date? Tell us.
Frequently asked questions
Who runs the .sk extension?
SK-NIC, a.s. is the registry operator for .sk, the country-code extension for Slovakia. The registry keeps the list of every .sk name; registrars sell the names to the public.
Can anyone register a .sk domain?
SK-NIC, a.s. sets who can register .sk names; some country codes need a local address, so check its rules before you buy.
How do I look up who owns a .sk domain?
The .sk registry publishes registration data over WHOIS at whois.sk-nic.sk. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .sk signed with DNSSEC?
Yes. The .sk zone is signed, so a .sk domain can turn on DNSSEC once its registrar adds a DS record.