Cellular South Inc. d.b.a. C Spire headquartered in Ridgeland, Mississippi, is the sixth largest wireless provider in the United States and the largest privately held wireless provider in the United States. The company is a full-service provider of transport, Internet and telecom services. C Spire has approximately 1,200,000 customers in Mississippi, the Memphis Metropolitan Area, the Florida Panhandle, parts of Alabama including Mobile. The company also holds 700 MHz and AWS licenses covering most of Tennessee and Alabama, though it has not yet extended service to these areas. On September 20, 2011 Cellular South, Inc. filed a trademark application for the C Spire Wireless name and two days later announced that it would market its services under the C Spire Wireless brand effective Septem