Optimum Fort Sill930 Fort Sill Blvd Fort Sill, OK 73503 USMain Number(844) 874-7558(844) 874-7558 8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PM 8:00 AM - 5:00 PMClosed Today Closed Today Visit SiteDirections