US Phone Directory

Browse every US area code in one place. This directory organizes all active North American Numbering Plan area codes by numeric group, by state, and as a complete flat list — making it easy to navigate whether you’re researching an unknown caller, looking up a reverse phone number, or exploring which regions a specific code covers.

Each area code page lists the codes in that range together with the city and state each code is primarily associated with, drawn from the public numbering plan. The directory covers 301 codes in total.

If you already have a phone number in mind, you can run a reverse lookup from the home page. Otherwise, drill down through the sections below to find the area code you’re looking for.