What is what area code is 442?

Area code 442 is a California area code that was introduced as an overlay for area code 760. It serves the same geographic area as 760, which includes much of the eastern and southeastern portions of California, encompassing regions like the Imperial Valley, Inyo County, and parts of the Mojave Desert. The implementation of 442 as an overlay means that ten-digit dialing is required for all calls within the 760 and 442 areas. It was introduced in 2009 to address the dwindling supply of available phone numbers in the 760 area.