Start contacting the Czech Republic by dialing your country’s international prefix. The international dialing prefix for US calls is “011.” As a universal international calling prefix, the plus symbol (+) is used in many countries. Step 2: Czech Republic Country Code. After dialing the international prefix, enter the Czech Republic 6 days ago · Calling Czech Republic explained: 011 - international prefix; dial first when calling abroad from the US or Canada. 420 - Country Code for Czech Republic. Phone Number - 9 digits. This page shows information about a Reverse Phone Lookup - Czech Republic +420. Wich Area and Mobile Codes are active in Czech Republic, how to call from and to, the capital and more information about the country. Phone number format in Czech Republic: +420 - Area Code - Local Number. Short code: CZ. Country code: +420. Citizenry: Czechs The ISO 3166-1-Alpha-2 or 2 letter country code for Czech Republic is CZ, while the ISO 3166-1-Alpha-3 or 3 letter country code for Czech Republic is CZE. The dialing code or calling code for Czech Republic is +420. When making a phone call to Czech Republic, you would need to dial this code before entering the local phone number. Calling Argentina explained: 011 - international prefix; dial first when calling abroad from the US or Canada. 54 - Country Code for Argentina. Phone Number ( remove initial 0) - 10 digits for both landlines and cell phones, area code included. example call from the United States or from Canada to a landline in Buenos Aires: 011 54 11 ???? ???? The international dialing code for Czech Republic is +420. You must enter this number if you are calling from another country. Czech Republic International phone number: +420 IDD 00 ISO code 2: CZ ISO code 3: CZE Capital city: Prague Number of inhabitants: 10 476 000 Area: 78 866,00km 2 Continent: Europe Internet domain of country:: .cz Prague, Czech Republic Moody’s Deutschland GmbH, Branch Prague Pernerova 42/82 186 00 Praha 8 Czech Republic Country Manager: Igor Ovcacik General office phone: +420 234 747 500. Riyadh, Saudi Arabia Company Branch of Moody’s Investors Service Moon Tower, Mezzanine Floor, Country code: +353 International call prefix: 00 Trunk prefix: 0. This is a list of telephone dialling codes for the Republic of Ireland. Fixed-line telephone users do not need to dial the dialling code when they are contacting someone else within their own area. sh4lD.