Slovakia +421
To call Slovakia from abroad, dial your exit code (or +), then 421, then the local number without its leading 0. In full: +421 912 123 456.
The country calling code for Slovakia is +421. A number starting +421 or 00421 is a call to or from Slovakia. From abroad: +421 912 123 456.
To call Slovakia from abroad, dial your exit code (or +), then 421, then the local number without its leading 0. The +421 code identifies the country; the following digits identify the line (landline or mobile).
How to call Slovakia from abroad
011 421 912 123 45600 421 912 123 4560011 421 912 123 456+421 912 123 456912 123 456 is a real-format Slovakia mobile number (example from the ITU-T numbering plan): replace it with the number you were given, without its leading 0.
Slovakia area codes
In Slovakia, landlines usually include an area code after +421 (without its leading 0). Mobiles have no area code.
Number format
02 212 345 67from abroad+421 2 212 345 670912 123 456from abroad+421 912 123 456Landline numbers in Slovakia have 6 or 7 or 9 digits after the country code; mobile numbers have 9 digits. The national prefix 0 is only dialled inside the country — drop it after +421.
Calling abroad from Slovakia
To call another country from Slovakia, dial the exit code 00 (or + on a mobile), then the country code, then the number. From Slovakia to the United States, for example: 00 1 201 555 0123.
A Slovakia number in international format is written +421 …. The + stands for the exit prefix (00 in much of the world, 011 in North America). Switching to international format, drop the leading 0.
Cheapest ways to call Slovakia
With internet on both ends, apps like WhatsApp, Signal or FaceTime call Slovakia for free. To reach a number without an app, VoIP services are usually cheaper than your operator’s international rate.
Frequently asked questions
What country has the code +421?
Slovakia has the country calling code +421.
How do I call Slovakia from the United States?
Dial 011, then 421, then the local number without its leading 0 — for example 011 912 123 456.
What does +421 mean?
It is the international dialing code for Slovakia. The + stands for your exit code (00 in much of the world, 011 in North America).
Is +421 mobile or landline?
The +421 code identifies the country, not the line type; Slovakia landlines and mobiles share it.
A country code covers a whole nation; the full number depends on the city and operator.
Mobile networks in Slovakia
4 mobile network operators run their own networks in Slovakia. The largest is Orange, with about 2.39 million subscribers (Q4 2024). Pick the one with the best coverage where you will spend most of your time.
formerly Globtel, Slovtel
Owned by Orange S.A.
formerly Telefónica, O2 Telefónica
Owned by e& PPF Telecom Group
formerly Eurotel, T-Mobile
Owned by Deutsche Telekom AG
SWAN
Owned by SWAN
- 3G has been switched off on Orange, O2, Telekom. A phone that only works on 3G will get no data there and may not be able to call: check that yours supports 4G with voice (VoLTE) before you go.
- 4G/5G frequency bands used in Slovakia: 5G 2100, 5G 3500, LTE 1800, LTE 2100, LTE 2600, LTE 800. Most recent smartphones cover them; older or regional models may miss some.
- Moving there? Mobile number portability has existed since 2004-05-01, a transfer takes about 4 day(s) and costs free.
Operators, subscriber counts, network codes and switch-off dates: Wikipedia (lists of mobile network operators, mobile network codes, 2G/3G phase-out, mobile number portability), licensed CC BY-SA 4.0. Figures come from each operator or regulator at the date shown.
Staying connected in Slovakia
With 140 mobile subscriptions per 100 people, almost everyone in Slovakia has a mobile — a WhatsApp, Signal or FaceTime call is usually the easiest way in. Internet use is high (90 %), so app-to-app calls over Wi-Fi are a safe bet.
Source: World Bank / ITU World Telecommunication indicators (IT.CEL.SETS.P2, IT.NET.USER.ZS, IT.MLT.MAIN.P2), latest available year.
Free and premium numbers in Slovakia
+421 800 123 456Free from inside Slovakia (numbers starting with 800). From abroad these numbers are often unreachable or charged at the international rate.
+421 900 123 456Surcharged services — ranges starting with 9. Do not call back an unknown missed call from such a range: the cost is far above a normal call.
Number ranges: ITU-T national numbering plan for Slovakia via Google libphonenumber.
Poland +48
Hungary +36
Czech Republic +420
Ukraine +380
Austria +43