CZ — Czech Republic

The Czech Republic (Czechia) is a Central European country known for Prague, its capital, which has one of Europe's best-preserved historical centers. The country has a strong industrial heritage and is a major beer-producing nation. The Czech Koruna (CZK) remains the currency as the country has not yet adopted the Euro. For developers, the CZ country code maps to the cs-CZ locale for Czech. The .cz domain is well-established, and +420 is the dialing code. The country's name transition from 'Czech Republic' to the shorter 'Czechia' (officially registered in 2016) means both names appear in databases, requiring normalization. Czech formatting uses comma as decimal separator and space as thousands separator. The Czech language uses extensive diacritical marks (háčky and čárky), requiring full Unicode support. Prague has become a major European tech hub with a large developer community. Czech IČO (company ID) and DIČ (tax ID) numbers have specific validation algorithms.