← Area code 240
240-722 phone numbers
Numbers 240-722-0000 to 240-722-9999 are assigned to Omnipoint Communications Cap Operations, LLC (rate centre ASHTON236, MD, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.