Area code 403
Area code 403 is an area code of Alberta. It was one of the first area codes created in 1947. It initially covered the entire province of Alberta, but after it was split by 780 in 1999, it now covers the southern portion of the province. The entire province was overlaid by 587 in 2008,[1] 825 in 2016,[2] and 368 in 2022.
