Top Telecommunications -- Worldwide

AT&T Inc. is one of the world's largest telecommunications companies providing mobile wireless broadband and entertainment services to millions of consumers and businesses across the United States and internationally.

Comcast Corporation is one of the world's largest media and technology companies operating Xfinity broadband and cable TV services NBCUniversal film and TV studios and the Sky broadcasting network across Europe.

Japan's largest telecommunications company and one of the world's largest by revenue

Spanish multinational telecommunications company operating under O2 and Movistar brands

British multinational telecommunications company operating networks across Europe and Africa