421 Country Code: Slovakia (+421)
+421 is the country code for Slovakia. If you searched "421 country code", "country code 421", "00421 country code", or "+421 country code" — they all refer to Slovakia. The code is also called the 421 dialing code, 421 phone code, or 421 ISD code, and is assigned by the International Telecommunication Union (ITU) under the E.164 standard.
Below you will find the number format, trunk prefix, major city area codes, and dialing facts specific to Slovakia (+421).
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Slovakia Phone Number Format
International Format Example
Domestic vs International
Drop 0 and prepend +421.
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Frequently Asked Questions: Slovakia Country Code
Which country is country code 421?
Country code 421 belongs to Slovakia. The full international dialing code is +421, also written as 00421 when dialing from countries that use 00 as an international access code, or +421 when dialing from a mobile phone.
What is the country code for Slovakia?
+421 is the international dialing code for Slovakia, assigned by the ITU under E.164. The ISO 3166-1 alpha-2 code is SK.
Do I drop the 0 when calling Slovakia from abroad?
Yes. Slovakia uses 0 as its domestic trunk prefix. When dialing from another country, remove it and replace with +421. The trunk prefix is only needed for long-distance calls within Slovakia.
Can I call Slovakia from my browser?
Yes. Kinvo connects calls to Slovakia via WebRTC directly from Chrome, Firefox, Safari, or Edge. No app download. Sign up, add credits from $5, and dial +421 followed by the local number.