The company is a component of the Euro Stoxx 50 stock market index.
Since 1997, the Spanish government has privatized its interest in the company.
In France, since 2011, Telefónica has a joint venture with the French telecommunications company Bouygues Telecom, part of the Bouygues group, to offer global telecommunication services packages to multinational companies.
This cooperation was expanded in June 2015 through the creation of a separate joint venture company named Telefónica Global Solutions France, with its own marketing and sales teams offering Telefónica and Bouygues Telecom services packages to corporations.
Telefónica operates the Movistar mobile phone brand throughout Latin America.
In Mexico it occupies a distant second place and it is the largest in Chile, Venezuela, Brazil, and Peru.
The Telefónica group has been in the country since 1996 when it acquired CRT, a fixed-line and mobile operator in the southern part of the country.
The landline division is currently part of Brasil Telecom. In 2009, after four big "blackouts" on Telefónica's broadband "Speedy", ANATEL ordered Telefónica to stop sales of its broadband service until improvements were made on the infrastructure to provide better-quality service.
) is a Spanish multinational broadband and telecommunications provider with operations in Europe, Asia, and North, Central and South America.
Operating globally, it is one of the largest telephone operators and mobile network providers in the world.
The five major stockholders include: Telefónica was the parent of Telefónica Deutschland, which held two alternative IP carriers.
The two ISPs, media Ways and Highway One merged in January 2003 after having been purchased by Telefónica in 2001 and February 2002 respectively.
According to the merger announcement, O2, which provided mobile phone services in the UK, Ireland, Germany and the Isle of Man (uniquely to the O2 group Manx Telecom also offered fixed-line services), retained its name and continued to be based in the United Kingdom, keeping both the brand and the management team.