.sk is for Slovak Republic
Root: ICANN
Registration web site: http://www.sk-nic.sk/
Whois server: whois.ripe.net
Whois web interface: http://www.sk-nic.sk/info.html
Second Level Domains Registered
ICANN records: http://www.iana.org/root-whois/sk.htm
Notes: FAQ in English described dispute policy. To register a domain a "company needs to have its representation in the Slovak Republic." Up to 5 domains can be registered by one business. Domain should not match with registered trademark of other legal body, unless this body gives written permission. Geographic names can't be registered as domain (only regional authorities can register them). Domain doesn't become a property of the company which registered it, therefore the domain can't be sold in any way. SK-NIC can refuse to register domain because of other reasons.
Domain Registration Rules:
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