Country Codes of the Czech Republic
- Telephone: +420
- 2 Letter: CZ
- 3 Letter: CZE
- ISO 3116-1 Numeric: 203
- Internet TLD: .cz
- ICAO Airport Code: LK
- Maritime Identification Digits: 270
- Emoji Flag: U+1F1E8 U+1F1FF
- Official Name: The Czech Republic
How to call the Czech Republic (international dialing)
- 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.
The Czech Republic’s country code may be mislabeled:
- Country code 00420 (exit code of ’00’ used in many European, Asian, and African nations followed by the Czech Republic’s country code of ‘420’).
- Country code 011420 (exit code of ‘011’ used in the United States and Canada followed by the Czech Republic’s country code of ‘420’).
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 where the call is dialed.
… to a mobile (cellular) phone or text (SMS)
Use the same call sequence.
Mobile phone numbers are represented by phone numbers starting with ‘6’, ‘7’, or ’91’.
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
The Czech Republic 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.
How to call within the Czech Republic (domestic dialing)
Dial the entire phone number as it is listed.
There is no trunk prefix used in the Czech Republic.
| nine digits |
| local phone number |
Czech phone numbers explained
Number details
Czech phone numbers are nine digits.
The first one to three digits of a land-line (fixed line) phone number represents a geographic (area) code.
Mobile numbers being with the digit ‘6’ or ‘7’.
An example of a Czech phone number
The National Museum lists its phone number in Prague as +420 224 497 111.
Number explanation
| 420 | 2 | 24 497 111 |
| country code for the Czech Republic | geographic (area) code for Prague | local phone number within Prague |
Local example – calling from another location in Prague
Dial all nine digits of the phone number for any domestic phone calls within the Czech Republic.
| 2 | 24 497 111 |
| geographic (area) code for Prague | local phone number within Prague |
Long distance example – calling from Ostrava, Czech Republic (on the other side of the country)
Dial all nine digits of the phone number for any domestic phone calls within the Czech Republic.
| 2 | 24 497 111 |
| geographic (area) code for Prague | local phone number within Prague |
Mobile example – calling from a cellular phone (including a foreign cellular phone roaming in the Czech Republic)
Dial all nine digits of the phone number for any domestic phone calls within the Czech Republic.
| 2 | 24 497 111 |
| geographic (area) code for Prague | local phone number within Prague |
International example – calling from outside the Czech Republic
To call from outside the Czech Republic, dial the exit code of the country the call is dialed from, followed by the Czech Republic’s country code of ‘320’, followed by the local phone number.
| exit code | secondone | 2 | 24 497 111 |
| exit code of the country the call is dialed from | country code for the Czech Republic | geographic (area) code for Prague | local phone number within Prague |
How to call from the Czech Republic
’00’ is used as an exit code when dialing an international call from the Czech Republic.
Sources and more resources
- Czech Telecommunications Office – Official regulator for telecommunications regulation in the Czech Republic.
- 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 – Czech Republic – 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 – Czech Republic (country code +420) Communication of 15.IV.2012 national numbering plan on file with ITU – Details of the Czech Republic’s telephone numbering plan as submitted to the ITU. Retrieved 16 November 2016.
- Wikipedia – Telephone Numbers in the Czech Republic – Wikipedia entry for telephone number data for the Czech Republic. Includes specific number ranges for each city as well as detail on calling procedures.
- BT – the Phonebook – Czech Republic International Codes – Summary of phone codes for the Czech Republic from the BT phone book.