Calling to Slovakia
- Do not include a leading ‘0’ in the international call sequence – it is only used in Slovakia for domestic long distance calls and domestic calls to a mobile phone.
- A leading '+' in the phone number means 'dial your country's exit code'.
- Calling from a mobile phone: dial from on the country where you're currently located.
- Calling from a VoIP or satellite phone: dial from on the country where the phone is registered.
Slovakia’s country code may be mislabeled:
- Country code 00421 (exit code of ’00’ used in many European, Asian, and African nations followed by Slovakia’s country code of ‘421’).
- Country code 011421 (exit code of ‘011’ used in the United States and Canada followed by Slovakia’s country code of ‘421’).
When calling to a mislabeled country code, remove the exit code from the call sequence and replace it with the exit code of the country the call is dialed from.
… to a mobile (cellular) phone or text (SMS)
Use the same call sequence.
Mobile phone numbers are represented by phone numbers starting with ‘901’ through ‘959’ inclusive.
When calling a mobile phone user, dial to the country where the mobile phone is registered, regardless of where the person is roaming.
… to a VoIP phone
Use the same call sequence.
When calling a VoIP phone user, dial to the country where the VoIP phone is registered, regardless of where the person is roaming.
… to a satellite phone
Slovakia does not have a country-specific satellite phone system.
Most satellite phones operate on their country code – calls to these satellite phones follow their call sequence.
… sending a fax
Use the same call sequence.
Calling within Slovakia (domestic dialing)
‘0’ is used as a tunk prefix when dialing between area codes in Slovakia.
Local calling (within the same area code)
Dial only the local phone number – do not include the trunk prefix ‘0’ or the area code in the phone call.
| seven to eight digits |
| firsttwo |
Long distance calling (to a different area code, or to a mobile phone)
Dial the trunk prefix ‘0’ as well as the destination area code.
| 0 | one to two digits | seven to eight digits |
| trunk prefix | area code | local phone number |
Slovakian phone numbers explained
Number details
Slovakian phone numbers are nine digits.
The first one to two digits of a landline (fixed line) phone number is the area (geographic) code.
Mobile numbers being with the digit ‘9’.
An example of a Slovakian phone number
The Bratislava City Museum lists its phone number in Bratislava as +421 2 591 008 12.
Number explanation
| 421 | 5 | 591 008 12 |
| country code for Slovakia | geographic (area) code for Bratislava | local phone number within Bratislava |
Local example – calling from another location in Bratislava
To call within the same area code dial only the local phone number. Do not include the trunk prefix ‘0’ or the area code in the call.
| 591 008 12 |
| local phone number within Bratislava |
Long distance example – calling from Kosice, Slovakia (on the other side of the country)
To call to a different area code dial the trunk prefix ‘0’ as well as the area code.
| 0 | 5 | 591 008 12 |
| trunk prefix | geographic (area) code for Bratislava | local phone number within Bratislava |
Mobile example – calling from a mobile phone (including a foreign mobile phone roaming in Slovakia)
To call from a mobile phone dial the trunk prefix ‘0’ as well as the area code.
| 0 | 5 | 591 008 12 |
| trunk prefix | geographic (area) code for Bratislava | local phone number within Bratislava |
International example – calling from outside Slovakia
To call from outside Slovakia, dial the exit code of the country the call is dialed from, followed by Slovakia’s country code of ‘321’, followed by the local phone number.
Do not include a leading ‘0’ in the call when calling from outside Slovakia.
| exit code | 421 | 5 | 591 008 12 |
| exit code of the country the call is dialed from | country code for Slovakia | geographic (area) code for Bratislava | local phone number within Bratislava |
Calling from Slovakia
’00’ is used as an exit code when dialing an international call from Slovakia.
Sources and more resources
- Regulatory Authority for Electronic Communications and Postal Services – Official regulator for telecommunications regulation in Slovakia.
- BEREC (Body of European Regulators for Electronic Communications) – European agency responsible for regulation and co-ordination of European telecommunication markets.
- European Commission Digital Single Market – Telecom Rules for the Digital Single Market. Outlines some of the telecommunications regulations across the European Single Market.
- European Commission Digital Single Market – Country information – Slovakia – Update on internet and wireless access across the European single market. Has a focus on broadband but includes wireless information as well.
- ITU (International Telecommunications Union) – United Nations specialized agency for information and communications technologies.
- International Telecommunications Union – DIALLING PROCEDURES (INTERNATIONAL PREFIX, NATIONAL (TRUNK) PREFIX AND NATIONAL (SIGNIFICANT) NUMBER) (IN ACCORDANCE WITH ITU-T RECOMMENDATION E.164 (11/2010)) – A collection of dialing procedures for all countries and regions of the world. Retrieved 8 October 2016.
- International Telecommunications Union – Slovakia (country code +421) Communication of 19.VIII.2015 national numbering plan on file with ITU – Details of Slovakia’s telephone numbering plan as submitted to the ITU. Retrieved 16 November 2016.
- Wikipedia – Telephone Numbers in Slovakia – Wikipedia entry for telephone number data for Slovakia. Includes specific number ranges for each city as well as detail on calling procedures.
- BT – the Phonebook – Slovakia International Codes – Summary of phone codes for Slovakia from the BT phone book.