Slovakia country code
+421 is the country code of Slovakia. From the US, dial 011 421 912 123 456; from a mobile phone, dial +421 912 123 456.
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How to dial Slovakia
Dial the exit code of the country you are calling from, then 421 without the plus sign, then the local number. Exit codes from ten large calling countries:
The example is a mobile number in Slovakia, written locally as 0912 123 456. Leave out the leading 0 when you dial it with the country code.
Time in Slovakia and the best time to call
Slovakia is on UTC+1. Compared with New York its clock is +6 h, with London +1 h and with Dubai -3 h (today's offsets, daylight saving included).
Slovakia changes its clocks for daylight saving, so its offset moves between UTC+1 and UTC+2 during the year.
Business hours in Slovakia run 09:00–18:00 local time on working days. On other clocks that is:
The weekend in Slovakia is Saturday and Sunday.
How numbers in Slovakia are built
A number in Slovakia is the country code +421 followed by a national number of 6, 7, or 9 digits. The trunk prefix, where there is one, is dropped after the code.
Written locally as 0912 123 456, an example mobile number in Slovakia is dialed as +421 912 123 456 from abroad.
To call out of Slovakia, dial 00, then the other country's code and number. On a mobile phone you can type + instead of 00.
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Prices checked October 30, 2026.
A call or message from +421 you don't recognize
The country code shows which country's numbering plan a number is registered in. It doesn't show who is calling, and caller IDs can be spoofed, so a +421 number isn't proof that the person is in Slovakia.
- Don't call back an unfamiliar international number, especially after a single ring. A missed call that tempts you to return it is a known callback trap, and a call to a premium-rate number can cost far more than a normal one.
- Never share verification codes, passwords or card details with someone who contacts you unprompted, whichever country the number appears to be from.
- If calls or messages keep coming, block the number and report it through your mobile carrier.
- Most calls from Slovakia are ordinary calls from family, friends, colleagues and businesses. If you are expecting one, save the number once the person has confirmed it.
Frequently asked questions
What is the country code for Slovakia?
The country code for Slovakia is +421. From abroad, dial your exit code (00 from most countries, 011 from the US and Canada), then +421 without the plus sign, then the local number. Written locally as 0912 123 456, an example mobile number in Slovakia is dialed as +421 912 123 456 from abroad.
What's the exit code to dial Slovakia from a mobile?
On a mobile phone you can skip exit codes altogether: type +421 and then the local number. From a landline, dial 011 from the US or Canada, 00 from the UK and most of Europe, or your own country's exit code first.
Do I need to drop the leading 0 when dialing Slovakia?
Yes. Leave out the leading 0 after the country code: dial +421, then the rest of the number.
What time is it in Slovakia, and when is a good time to call?
Slovakia is on UTC+1. Business hours there (09:00–18:00) are 08:00–17:00 UTC, 03:00–12:00 in New York and 08:00–17:00 in London.
How many digits is a phone number in Slovakia?
A number in Slovakia has 6, 7, or 9 digits after the country code +421, not counting a leading trunk digit.
How much does it cost to call Slovakia?
With QuikRing a call to Slovakia costs $0.20/min to a mobile and $0.06/min to a landline, charged per started minute. You call from your browser, so there is no SIM card, roaming plan or app to set up.
Who is calling me from +421?
The code shows which country's numbering plan a number belongs to, not who is calling, and caller IDs can be spoofed. Don't call back an unknown number, block it if it keeps calling, and report it through your mobile carrier.