← Area code 326
326-231 phone numbers
Numbers 326-231-0000 to 326-231-9999 are assigned to Onvoy, LLC (rate centre SPRINGFLD, OH, NANPA abbreviation). 9 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.