What the international code for Namibia to call? Dial code number to open phone call in Namibia is ( 00264 ) or ( +264 ) in order to make international phone calls between Namibia and all countries of the world to unlock phone with more additional details and informations about Namibia country whereby each country is distinguished by a special telephone number, where the caller write the Republic of Namibia dial area code to opening sim card telephone line mobile or landline then the phone number.