Alltel Communications is a Forbes 500 company that operates one of the largest wireless networks in the United States. The company delivers voice and advanced data services to more than 13 million customers. It also serves the health care, finance, insurance, real estate, transportation, retail and telecommunications industries. Alltel Communications helps clients track equipment and employees through the GPS technology. In addition, the company offers lead generation and inventory monitoring services. It provides systems management and productivity enhancement services. Additionally, the company offers wireless broadband access services to subscribers. It provides text, picture and video messaging services to customers. Headquartered in Little Rock, Ark., Alltel Communications maintains a store in Newark, Ohio.