Area Codes
| 580 | Oklahoma (Ponca City, Guymon, Enid, Lawton, Ardmore, Sayre, Elk City, and southern and western Oklahoma) | More information at: Area Code 580 Phone Number Blocks
| 580 | Oklahoma (Ponca City, Guymon, Enid, Lawton, Ardmore, Sayre, Elk City, and southern and western Oklahoma) | More information at: Area Code 580 Phone Number Blocks