What the international code for Mauritius to call? Dial code number to open phone call in Mauritius is ( 00230 ) or ( +230 ) in order to make international phone calls between Mauritius and all countries of the world to unlock phone with more additional details and informations about Mauritius country whereby each country is distinguished by a special telephone number, where the caller write the Republic of Mauritius dial area code to opening sim card telephone line mobile or landline then the phone number.