← Area code 612
612-231 phone numbers
Numbers 612-231-0000 to 612-231-9999 are assigned to New Cingular Wireless PCS, LLC (rate centre TWINCITIES, MN, NANPA abbreviation). 1 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.