Its overlay area code is the 289 area code. It was introduced to the public in the middle of 2001. The first Mississauga (Malton) area code was all used up in the later months of 2005, thus the 289 area code will become the area code of phone numbers that will be given starting from that time onwards.
Direct inward dialing (DID), also called direct dial-in (DDI) in Europe and Oceania, is a telecommunication service offered by telephone companies to subscribers who operate a private branch exchange (PBX) system.
Learn international country codes. The International Direct Dialing (IDD) code is used when dialing from a landline in one country to another country. When dialing from your mobile phone, the + sign can be used in place of the IDD code.In most countries, the international prefix is 00.earn international country codes. The International Direct Dialing (IDD) code is used when dialing from a landline in one country to another country. When dialing from your mobile phone, the + sign can be used in place of the IDD code. In most countries, the international prefix is 00.