Find any 539- phone number in Oklahoma

The 539 area code is an area code in the North American Numbering Plan (NANP). It is the only area code for phone numbers in the US state of Oklahoma. It was created on April 10, 2010, when its parent area code, 918, was split in an overlay plan. This split was necessary to cater to the growing demand for unique phone numbers in the area. The 539 area code is also home to Tulsa, the second largest city in Oklahoma.

NANP is the telephone numbering plan that covers twenty-five nations, including the United States, Canada, and parts of the Caribbean. NANP divides the North American continent into geographic regions, which are assigned a three-digit area code. These numbers are then overlaid and linked, allowing people to call each other in different geographic locations. Each area code must be unique and normally serves a particular geographic region. The 539 area code, for example, is only used in Oklahoma.