The .cs domain has been discontinued or is no longer assigned to the DNS Root.
You can browse related extensions that may provide you with other alternatives.
The .cs domain was the country code top-level domain (ccTLD) for Czechoslovakia, a central European state formed in 1918 after the collapse of the Austro-Hungarian Empire. Based on the ISO 3166-1 country code CS, the extension first appeared in IANA's top-level domain tables in 1990, making it one of the earliest ccTLDs in the region. The first .cs domain, iac.cs, was registered in October 1991 by the Institute of Applied Cybernetics in Bratislava.
On January 1, 1993, Czechoslovakia peacefully dissolved into two independent nations, the Czech Republic and Slovakia. Because ccTLDs follow the ISO 3166-1 standard, each new country received its own extension: .cz for the Czech Republic and .sk for Slovakia. Existing .cs registrants migrated to the new domains, and IANA removed .cs from the DNS root zone around January 1995. It was one of the first country code domains ever retired.
The CS code later had a brief second life. In 2003, ISO reassigned CS to the State Union of Serbia and Montenegro, but the .cs domain was never delegated for that country, which continued using .yu. When Serbia and Montenegro separated in 2006, the two nations received .rs and .me, and CS was withdrawn once again.
If you are building a presence in the Czech Republic, Slovakia, or central Europe, 101domain offers registration for the active successor and neighboring country extensions listed below. Our team can also help with local presence requirements and multi-country domain portfolio strategy.