What the international code for Dominica to call? Dial code number to open phone call in Dominica is ( 001767 ) or ( +1767 ) in order to make international phone calls between Dominica and all countries of the world to unlock phone with more additional details and informations about Dominica country whereby each country is distinguished by a special telephone number, where the caller write the Commonwealth of Dominica dial area code to opening sim card telephone line mobile or landline then the phone number.