.cz domain extension

Sponsored by CZ.NIC, z.s.p.o · Czech Republic (CZ) · ASCII .cz

Registered domains Updated 10 Jun 2026 · Source: CZ.NIC 2026-Q1 report

1,400,000

Domains

#38

Worldwide rank

0.33%

Of TLD census

425M

Census universe

.cz holds 1,400,000 registered domain names. That makes it the 38th largest TLD by domain count and 0.33% of the global TLD census of 424,986,374 domains we track. By any reasonable measure that is a mid-tier TLD.

Either side of .cz on the league table: .click sits one place above with 1,497,215 domains, and .lol sits one place below with 1,319,462.

Counts are the most recent public figure available from the registry or from ntldstats.com, refreshed weekly. Citation policy.

About .cz

.cz is the country-code top-level domain (ccTLD) for Czechia (the Czech Republic). It is managed by CZ.NIC, a non-profit organization based in Prague. The domain is open to registrants worldwide, with no specific residency restrictions. Registrations are processed through accredited registrars. CZ.NIC also operates the WHOIS and RDAP services for the zone. The .cz namespace is widely used by Czech businesses, organizations, and individuals, as well as international entities with a presence in the country.

History

The .cz domain was registered in IANA on 13 January 1993, shortly after the dissolution of Czechoslovakia, which had used .cs. CZ.NIC has managed the TLD since its inception.

Technical record Source: IANA

ASCII TLD: .cz
Display TLD: .cz
Type: COUNTRY-CODE
Sponsor: CZ.NIC, z.s.p.o
Country: Czech Republic

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