← Area code 580
580-663 phone numbers
Numbers 580-663-0000 to 580-663-9999 are assigned to Chickasaw Telecommunicaions Services, Inc. in Ringling, OK. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 580-663-1xxx, 580-663-3xxx, 580-663-4xxx, 580-663-5xxx, 580-663-6xxx, 580-663-7xxx, 580-663-8xxx, 580-663-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.