← Area code 484
484-253 phone numbers
Numbers 484-253-0000 to 484-253-9999 are assigned to Level 3 Communications, LLC (rate centre PHPHSBZN26, PA, NANPA abbreviation). 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 484-253-7xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.