What the international code for Macao to call? Dial code number to open phone call in Macao is ( 00853 ) or ( +853 ) in order to make international phone calls between Macao and all countries of the world to unlock phone with more additional details and informations about Macao country whereby each country is distinguished by a special telephone number, where the caller write the Macao Special Administrative Region of China dial area code to opening sim card telephone line mobile or landline then the phone number.