Area Code 403-540 located in DE WINTON, , AB, more detail is as below. Place NPA (Numbering Plan Area) : 403 NXX (Local Number Prefix) : 540 City : DE WINTON State : AB (Alberta) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 LATA (Local Access Transport Area) : 884 ZIP Code Count : 0 ZIP Code Frequency : 4 ZIP Code : T0L 0W0 Other Information NPANXX : 403540 County Population : 55444 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Coverage Area Name : CALGARY Latitude : 51.0478 Longitude : -114.0585 ‹ previous : 403-539 next › : 403-540 Telephone Number List 403-540-0000 ~ 403-540-9999