← Area code 660
660-365 phone numbers
Numbers 660-365-0000 to 660-365-9999 are assigned to New Cingular Wireless PCS, LLC in Princeton, MO. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 660-365-2xxx, 660-365-3xxx, 660-365-5xxx, 660-365-7xxx, 660-365-8xxx, 660-365-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.