Area codes 306 and 639 are the telephone area codes in the Canadian province of Saskatchewan, encompassing the province. The incumbent local exchange carrier in 306 and 639 is SaskTel. The main area code, 306, is one of the original 86 area codes assigned in 1947, in the contiguous United States and the then-nine-province extent of Canada. Saskatchewan's second area code, 639, was introduced in 2012, and is an overlay of 306.