Area code 442 is an overlay of area code 760, serving southeastern and inland Southern California. This includes parts of San Diego, Riverside, San Bernardino, and Imperial counties, with cities like Oceanside, Palm Springs, and Victorville falling under its reach. Introduced in 2009, 442 was added to ensure adequate numbering capacity for a region experiencing sustained growth in both urban and suburban areas. Ten-digit dialing is required throughout the area. Though 760 remains more commonly associated with the region, 442 is increasingly found on mobile devices and new business lines. The area blends desert tourism, residential expansion, and military installations, making it a diverse and dynamic part of Southern California.