Area Code Atlas

NPA 587 to Overlay NPAs 403 and 780 (Alberta, Canada)

Overlay planned for Alberta with NPA 587

Area code 587 was reserved and planned as an overlay for the entire province of Alberta, covering both 403 and 780, to provide relief for projected exhaust of these codes.

NPA 587 to Overlay NPAs 403 and 780 (Alberta, Canada)

NPA 587 overlay on 403 announced

NPA 587 to Overlay NPA 403 and NPA 780 (Alberta, Canada)

Permissive ten-digit dialing introduced in Alberta

Permissive 10-digit dialing was introduced across Alberta on June 23, 2008, as a preparatory step for the upcoming overlay of area code 587 on the entire province. Callers could use either 7 or 10 digits for local calls during this period.

Overlay planned for Alberta with new area code 587

Area code 587 was planned as an overlay for the entire province of Alberta, covering both 403 and 780, to mitigate number exhaustion. Optional ten-digit dialing began on June 23, 2008.

Mandatory ten-digit dialing implemented in Alberta

Mandatory 10-digit local dialing was implemented on September 12, 2008, throughout Alberta, requiring callers to dial the area code for all local calls as part of the overlay of area code 587, which was introduced to provide additional numbering resources.

NPA 587 overlay introduced for Alberta

On September 19, 2008, area code 587 was introduced as an overlay for the entire province of Alberta, covering the existing 403 and 780 regions to provide additional numbering resources.

Area code 587 activated for new number assignments

Area code 587 began to be assigned to new customers in Calgary and Edmonton on September 20, 2008, as part of the province-wide overlay.

NPA 825 to Overlay NPAs 403/587/780 (Alberta Canada)

NPA 825 to Overlay NPAs 403/587/780 (Alberta Canada)

NPA 825 to Overlay NPAs 403/587/780 (Alberta Canada)

NPA 825 overlay introduced for Alberta

On April 9, 2016, area code 825 was introduced as an additional overlay for the entire province of Alberta, joining the existing overlay complex of 403, 780, and 587.

NPA 368 to Overlay NPAs 403/587/780/825 (Alberta, Canada)

NPA 368 to Overlay NPAs 403/587/780/825 (Alberta, Canada) Deferred – supersedes PL-531

NPA 368 overlay introduced for Alberta

On January 21, 2022, area code 368 was introduced as an overlay for all of Alberta, joining the existing overlay complex of 403, 780, 587, and 825, providing additional numbering resources.

Area code 568 reserved for Alberta

Area code 568 was reserved in November 2022 as the sixth area code for Alberta, set aside for future relief of the province-wide overlay complex.