Area Code Atlas

Second overlay relief plan established

Following updated exhaustion forecasts, a new relief framework was established to add another overlay code to the region. This plan set the stage for introducing area code 548 as an additional overlay to the existing 519/226 complex.

NPA 548 overlay on 226/519 announced

NPA 548 to Overlay NPA 226/519 (Southwestern Ontario, Canada)

NPA 548 overlays 226 and 519 in southwestern Ontario

Area code 548 was activated on June 4, 2015, as an additional overlay for the 226 and 519 area codes in southwestern Ontario. The new code was introduced to address the projected exhaustion of available numbers.

NANPA Planning Letter 548, 800-855 number management

NPA 382 overlay on 226/519/548 announced

NPA 382 to Overlay NPA 226/519/548 (southwestern Ontario)

NPA 382 overlays 226, 519, and 548 in southwestern Ontario

Area code 382 was introduced on June 17, 2023, as a distributed overlay for the 226, 519, and 548 area codes in southwestern Ontario. This addition was implemented to address the continued demand for new telephone numbers in the region.

Reservation of area code 487 for future relief

In May 2025, area code 487 was reserved as a future relief code for the southwestern Ontario overlay complex, which includes area codes 226, 382, 519, and 548. This reservation was made in anticipation of future numbering exhaustion.

Reservation of area code 487 for future relief

On May 20, 2025, the CRTC approved the reservation of area code 487 as a future overlay for the southwestern Ontario area code complex (226/382/519/548). This reservation ensures numbering relief for the region as future demand requires.