+421 explained
The Slovakia country code, 421, is what you dial before a Slovakia number when you call from abroad. It is also known as the Slovakia dialing code, Slovakia calling code, or Slovakia phone code. In the Slovakia phone number format, +421 comes first, then the area code, such as 2 for Bratislava, then the local number.
- Country code
- +421
- The 00421 country code is the same number
- ISO country codes
- SK, SVK
- Use the SK country code or the SVK country code on forms and passports. To call Slovakia, dial +421
- Used in
- Slovakia
- No other country or territory dials +421
- Exit code
- 00
- From most countries. Also 011 from United States and Canada, 0011 from Australia, and + from any mobile
- Trunk prefix
- 0
- Drop it after +421
- Number length
- 6, 7, or 9 digits
- After +421
- Time now in Slovakia
- Slovakia mobile number format
- 0912 123 456
- From abroad: +421 912 123 456
- Slovakia landline number format
- 02 212 345 67
- From abroad: +421 2 212 345 67
+421 area codes of main cities
Each +421 area code below is in the form you dial from abroad: +421, then the city code, then the local number. Inside Slovakia, callers leave out +421 and put 0 in front of the city code. So Bratislava is +421 2 from abroad and 02 at home.
- Bratislava
- +4212
- Košice
- +42155
- Prešov
- +42151
- Žilina
- +42141
- Nitra
- +42137
- Banská Bystrica
- +42148
- Trnava
- +42133
- Trenčín
- +42132
- Martin
- +42143
Slovakia phone number types
The first digits of a Slovakia number tell you what kind of number it is: a landline, a mobile, a free number, or one that costs more to call. Here is a sample of each type of Slovakia phone number, as dialed inside Slovakia and from abroad.
Good to know before you call Slovakia
“Dobrý deň”
It means good day. No source states how Slovaks answer the phone, so this is the everyday Slovak greeting, used from morning until dark
Reply
“Dobrý deň”
Slovakia's mountain rescue service, the Horská záchranná služba, has its own line, 18 300
Horská záchranná službaThe Slovak numbering plan sets aside every number that starts with 96 for special telecom networks used by the army and the police
Regulatory Authority for Electronic Communications and Postal ServicesNumbers that start with 9598 belong to the Railways of the Slovak Republic, for its GSM-R train radio network
Regulatory Authority for Electronic Communications and Postal Services
What it costs to call Slovakia (using Suparelay)
Landline from $0.05/minMobile from $0.43/min
Only 60 of 220 countries cost less to call than Slovakia.
Enter a numberEach bar counts the countries at that price
Want to call Slovakia?
Call any phone from this tab. Nothing to install on either side, and you pay cents a minute.
Why a call to Slovakia fails
You call from: 🇺🇸 United States
The 0 is still in the number
The 0 at the start of a Slovak area code is for calls inside Slovakia. From abroad, leave it out: +421 takes its place.
- Connects
- 011 421 2 212 345 67
- Does not connect
- 011 421 02 212 345 67
The exit code is wrong for your country
00 works from Slovakia, the rest of Europe, and most of the world. From the US and Canada the exit code is 011.
- Connects
- 011 421 2 212 345 67
- Does not connect
- 00 421 2 212 345 67
The number does not take calls from abroad
Freephone numbers that start with 0800 often cannot be reached from outside Slovakia.
- Connects
- 011 421 2 212 345 67
- Does not connect
- 011 421 800 123 456
Questions about +421
Which country is +421?
+421, or country code 421, belongs to Slovakia.
What is +421?
+421 is the part you dial before a Slovak number when you call from another country. It replaces the trunk 0, so a Bratislava landline that starts 02 becomes +421 2.
What is the difference between +421 and 00421?
The + stands for your exit code. 00 is the exit code in Slovakia, the rest of Europe, and most of the world, so 00421 and +421 reach the same number there. From the US and Canada, dial 011 421 instead, so a Bratislava number reads 011 421 2 212 345 67.
Do I drop the 0 after +421?
Yes. The 0 is the Slovak trunk prefix and works only inside Slovakia. Dial +421 2 212 345 67, not +421 02 212 345 67.
Can I text a +421 number?
Yes. Write a Slovak mobile as +421 9 without its leading 0 (it starts 09 at home), and your phone sends the text abroad at your carrier's international rate.
How much does it cost to call Slovakia?
A call to a Slovak mobile costs more than a call to a landline. The dialer on this page shows the exact price of the number you enter before you call.
Does a Slovak mobile number always start with 09?
Yes. Every Slovak mobile number starts with 09 at home, or +421 9 from abroad. Slovak Telekom and Orange Slovensko each hold their own block of digits after the 9.
Does a Slovak 0800 number work from abroad?
No. Freephone numbers that start with 0800 connect free only inside Slovakia. From abroad, they often will not connect at all.
Is the SK country code the same as +421?
No. SK is the ISO code of Slovakia, used in forms and addresses. The number you dial is +421.
Is the SVK country code the same as +421?
No. SVK is the three-letter ISO code of Slovakia. The number you dial is still +421.
The information on this page is accurate as of September 26, 2026.
Regulatory Authority for Electronic Communications and Postal Services, the Slovak numbering plan