AT&T Inc. (AT&T) is a holding company and a provider of telecommunications services in the United States and worldwide. Services offered include wireless communications, local exchange services, long-distance services, data/broadband and Internet services, video services, telecommunications equipment, managed networking, and wholesale services. AT&T operates in three segments: Wireless, Wireline and Other. Its Wireless subsidiaries provide both wireless voice and data communications services across the United States. Wireline subsidiaries provide primarily landline voice and data communication services, AT&T U-verse high-speed broadband, video, and voice services (U-verse) and managed networking to business customers. In December 2013, AT&T announced that it had closed the transaction to lease rights to approximately 9,000 of its Company-owned wireless towers to Crown Castle International Corp., as well as the sale of approximately 600 AT&T towers.