Original area code assigned in 1947 for the entire Canadian province of Saskatchewan.
Original area code assigned in 1947 for the entire Canadian province of Saskatchewan. It was the sole area code for the province until 2013.
Area code 306 assigned to Saskatchewan
In 1947, area code 306 was assigned as one of the original North American area codes, covering the entire province of Saskatchewan.
Area code 474 reserved for future relief in Saskatchewan
Overlay relief planned for area code 306 with new code 639
CRTC approves overlay relief for area code 306 using 639
Saskatchewan area code 639 added as overlay
Area code 639 was added in August 2011 as an overlay for Saskatchewan to address number exhaustion, following relief planning and regulatory approval.
NPA 639 overlay on 306 announced
NPA 639 to Overlay NPA 306 (Saskatchewan, Canada)
Overlay relief planned for area code 306 with new area code 639
Area code 639 overlay approved
NPA 639 overlay on 306 announced
NPA 639 to Overlay NPA 306 (Saskatchewan, Canada)
NPA 639 overlay on 306 announced
NPA 639 to Overlay NPA 306 (Saskatchewan, Canada)
Permissive ten-digit dialing begins for 306 and 639
Mandatory 10-digit dialing in Saskatchewan
Area code 639 overlays area code 306 in Saskatchewan
Area code 639 overlay activated
NPA 474 reserved for Saskatchewan overlay
Area code 474 was reserved in July 2018 as a future overlay for Saskatchewan, in anticipation of the eventual exhaustion of area codes 306 and 639.
Area code 474 reserved for future relief in Saskatchewan
Area code 474 reserved for future relief in Saskatchewan
NPA 474 overlay on 306/639 announced
NPA 474 to Overlay NPA 306/639 (Saskatchewan, Canada)
Saskatchewan area code 474 activated as overlay
Area code 474 overlay activated
Area code 474 was activated as an overlay to area codes 306 and 639 in Saskatchewan, with no changes to the established dialing procedure.