Slovakia Phone Number Format

Country code +421 — Complete guide to Slovakia phone number formats, mobile and landline structures, and area codes.

How Slovakia Phone Numbers Are Written

Phone numbers in Slovakia have 9 digits for mobiles and 6 to 9 for landlines after the country code +421. Inside Slovakia a number is written with a leading 0, which makes 10 digits: 091X XXX XXX. Drop that 0 when you call from abroad or save the number in international format: +421 91X XXX XXX.

Country code	+421
Digits after +421	9 digits for mobiles and 6 to 9 for landlines
Trunk prefix (domestic calls)	0, dropped after +421
Mobile numbers start with	090–091 or 094–095
Exit code (to call abroad from Slovakia)	00
Dial from the US	011 421 91X XXX XXX

Mobile vs. Landline Numbers

Mobile numbers

9 digits after +421, starting with 090–091 or 094–095.

091X XXX XXX at home

+421 91X XXX XXX international

Landline numbers

6 to 9 digits after +421. Landlines begin with an area code, for example Bratislava:

02 XXX XXX XX at home

+421 2 XXX XXX XX international

Slovakia Number Types

Type	Starts with	Written at home	International	From the US
Mobile	090–091 or 094–095	`091X XXX XXX`	`+421 91X XXX XXX`	`011 421 91X XXX XXX`
Landline	021–029, 031–038, 041–048, 051–058, 060 or 081	`02 XXX XXX XX`	`+421 2 XXX XXX XX`	`011 421 2 XXX XXX XX`
Toll-free	080	`0800 XXX XXX`	`+421 800 XXX XXX`	`011 421 800 XXX XXX`
Premium rate	090 or 097–098	`0900 XXX XXX`	`+421 900 XXX XXX`	`011 421 900 XXX XXX`
Shared cost	—	`0850 XXX XXX`	`+421 850 XXX XXX`	`011 421 850 XXX XXX`
VoIP	—	`0690 XXX XXX`	`+421 690 XXX XXX`	`011 421 690 XXX XXX`
Company number (UAN)	—	`0961 XXX XXX`	`+421 961 XXX XXX`	`011 421 961 XXX XXX`

X stands for any digit. Source: libphonenumber metadata (phonenumbers 9.0.40), Google's open numbering data.

Checking a number from Slovakia? The phone number checker tells you if it is valid, mobile or landline, and gives its international format.

Dialing Tips

Remove the leading 0: When dialing internationally, drop the trunk prefix (0) that is used for domestic calls in Slovakia.
Use the + notation: From a US mobile phone, use +421 instead of 011 421.
Verify the number length: Numbers in Slovakia have 9 digits for mobiles and 6 to 9 for landlines after +421. If your call does not connect, check that no digit is missing or doubled.
Save contacts in international format: Always store phone numbers with the full +421 prefix so they work from any country.

Slovakia Phone Number FAQ

How many digits does a phone number in Slovakia have?

Phone numbers in Slovakia have 9 digits for mobiles and 6 to 9 for landlines after the country code +421. Written for domestic calls with the leading 0, a mobile number has 10 digits.

What do mobile numbers in Slovakia start with?

Mobile numbers in Slovakia start with 090–091 or 094–095 when written for domestic calls. In international format the leading 0 is dropped: +421 91X XXX XXX.

How do I write a phone number from Slovakia in international format?

Start with +421, then the national number without the leading 0. For example, a mobile number written 091X XXX XXX at home becomes +421 91X XXX XXX. From a US landline, dial 011 421 91X XXX XXX.

What is the toll-free prefix in Slovakia?

Toll-free numbers in Slovakia start with 080, for example 0800 XXX XXX. Many toll-free numbers can't be reached from abroad.

How do I call the US from Slovakia?

Dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX. From a mobile phone you can use + instead of 00: +1 XXX XXX XXXX.

Slovakia Quick Info

Country Code +421

ISO Code SK

Capital Bratislava

International Prefix 011 (from US)

Full Country Profile

Nearby Countries