Area code 972 serves the northeastern portion of the Dallas-Fort Worth metroplex, including cities like Plano, Garland, Irving, and Mesquite. Introduced in 1996 from a split with 214 and later overlaid with 469 and 945, it’s part of a complex multi-code region that reflects immense population and commercial growth. Ten-digit dialing is required. Area code 972 is associated with North Texas’s corporate corridor and suburban boom, representing both economic vitality and the sprawling development characteristic of the Dallas area.