← Area code 661
661-340 phone numbers
Numbers 661-340-0000 to 661-340-9999 are assigned to New Cingular Wireless PCS, LLC (rate centre BKFD MAIN, CA, NANPA abbreviation). 5 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.