United States Cellular Corporation, d.b.a. U.S. Cellular, owns and operates the eighth largest wireless telecommunications network in the United States, behind Verizon Wireless, AT&T Mobility, Sprint Nextel, T-Mobile USA, Clearwire, MetroPCS, and Leap Wireless. As of 2012, they serve about 5.8 million customers in 126 markets in 26 U.S. states. The company has its headquarters in Chicago, Illinois. On November 7, 2012, US Cellular announced $480-million deal to sell spectrum and 585,000 customers (10 percent of U.S. Cellular’s total customer base) in Chicago, St. Louis, central Illinois and three other Midwest markets to Sprint Nextel.