← Area code 580
580-756 phone numbers
Numbers 580-756-0000 to 580-756-9999 are assigned to T-Mobile USA, Inc. in Marlow, OK. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 580-756-2xxx, 580-756-5xxx, 580-756-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.