José María Álvarez-Pallete López

GSM Association functions as a association representing interest of mobile operators. It offers programs and advocacy initiatives including future networks, identity, and internet of things, industry purpose, mobile for development, spectrum and the mobile economy. The company was founded in 1982 and is headquartered in London, the United Kingdom.

Telefonica Moviles Espana SA provides mobile communication services. It operates under the trade name Movistar, offering a range of wireless services, including international roaming, and wireless Internet and data communication. The company has alliances with T-Mobile International, Telecom Italia Mobile, and Orange SA. Telefonica Moviles Espana was founded on February 14, 2000 and is headquartered in Madrid, Spain.

Telefónica Internacional operates as a holding company with interests in the telecommunications industry. The firm is based in Madrid.

Cesky Telecom AS serves 4.2 million access lines. Ceský Telecom is also a ISP and data carrier in a competitive market, with more than 480,000 Internet customers. It owns 51% of Eurotel Praha, the nation's #1 wireless carrier (3.2 million customers), and has bid to take full ownership. After much debate, the Czech government announced in April 2005 plans to sell its 51% stake in Ceský Telecom to Spain's Telefónica, S.A. Telsource, a joint venture of Royal KPN and Swisscom, already sold its 27% stake

CEMEX España S.A. is a cement production company. It is engaged in manufacturing, marketing and distribution of cement, ready-mix concrete and aggregates. CEMEX España S.A. was founded on April 30, 1917 and is headquartered in Madrid, Spain.

Brasilcel NV provides mobile telecommunications services. The company offers a range of mobile telephony services and other value-added services, including data transmission, broadband mobile Internet, and video transmission services to corporate and domestic customers. The firm was founded in December, 2002 and is headquartered in Amsterdam, the Netherlands.

Telefónica Holding de Argentina SA is a telecommunications company based in Buenos Aires, Argentina. and has subsidiaries in Argentina. The Argentinean company provides wireline telecommunication services.

Valenciana de Cementos Portland SA used to manufacture and sell cement and other related products. It used to operate ready-mix concrete plants, mortar plants, cement factories, gravel quarries and milling. It also owned marine terminals. It was located in Madrid, Spain

Cia de Telecomunicaciones de Chile Isapre SA provides telecommunications services. The company is headquartered in Santiago, Chile.

Telefónica Ireland Ltd. provides mobile communication services. It offers voice and data messaging, postpaid and prepaid packages, and wireless broadband Internet services to its customers. The company was founded by Barry Maloney and is headquartered in Dublin, Ireland.

Telefónica Telecom SA provides telecommunications services. It offers fixed and mobile telephony, broadband internet, cable television subscriptions, and network administration. The firm also provides data center management, software application development, and information technology infrastructure operations. The company was founded on June 16, 2003 and is headquartered in Bogota, Colombia.

Part of Telefónica SA, Telefónica Móviles México SA is a telecommunications company based in Mexico City, Mexico. Telefónica Móviles México SA is committed to providing secure and cutting-edge technology for communication between individuals and businesses. The Mexican company values transformation and creating value for employees, customers, shareholders, and partners. The private company's Center for Privacy is a fundamental pillar of responsibility in their data economy strategy. The company was founded in 1924. The CEO is Ángel Vilá. Telefónica Móviles México SA was acquired by Telefónica Móviles España SA on December 21, 2005 for $210.43 million.

O2 Czech Republic a.s. provides telecommunication and related services. It operates through Fixed and Mobile segments. The Fixed segment provides services using fixed network and WiFi infrastructure. The Mobile segment engages in mobile telecommunication and data services. The company was founded on December 16, 1993 and is headquartered in Prague, Czech Republic.

Telefonica Moviles Colombia SA provides mobile telcommunication services. It offers GSM services in areas such as voice, data transmission, and wireless broadband access. The company has offices in Spain, Morocco, and 14 countries in Latin America. Telefonica Moviles Colombia was founded in April 2004 and is headquartered in Bogota, Colombia.

Fonditel Pensiones EGFP SA is the pension fund management subsidiary of Telefónica Capital SAU, which is owned by Telefónica SA (BME: TEF) in Spain. Headquartered in Madrid, the firm was founded in 1992 and offers investment solutions in the form of both pension plans and investment funds.

Part of Telefónica SA, Telefónica de España SA is a private company based in Madrid, Spain. The Spanish company provides a program called ADR, which allows access to the American Depositary Receipts of Telefónica with a US certificate of the shares.

Telefónica Europe Plc operates as a mobile communication services company. It offers integrated mobile, fixed, and broadband services. The firm provides mobile telecommunications services using universal mobile telecommunications system, general packet radio services, and fixed line systems. The company was founded on December 10, 2004 and is headquartered in Slough, the United Kingdom.

Wayra Investigación & Desarrollo SL is a venture capital and private equity firm, subsidiary of Telefónica Digital Holdings SL. The company was founded on April 14, 2011 and is headquartered Madrid, Spain.

Fundación Telefónica is a private company based in Madrid, Spain. The Spanish company provides social innovation programs based on new technologies and collaborative networks.

Part of Liberty Global Plc, VMED O2 UK Ltd. provides mobile network with a broadband network services. The private company is based in London, UK. Lutz Markus Schuler has been the CEO of the British company since 2021.

PT Cemex Indonesia is an Indonesian company that manufactures and distributes cement.