What is 639 area code?

The 639 area code is an overlay code for the 306 area code in Saskatchewan, Canada. It was added in May 2013 to ensure a continuing supply of phone numbers in the region. The 639 area code covers cities such as Regina, Saskatoon, Prince Albert, Moose Jaw, and Yorkton. Callers within the 639 area code are required to dial the area code followed by the seven-digit phone number when making local calls.