← Area code 610
610-604 phone numbers
Numbers 610-604-0000 to 610-604-9999 are assigned to Verizon Pennsylvania, Inc. (rate centre PHPHSBZN13, PA, 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.