Héctor Roberto Alonso

Impsat Fiber Networks, Inc. is a telecommunications company. It is engaged in providing data transmission, internet, telephony, private networks, carrier services and data centers. The company was founded on September 5, 1996 and is headquartered in Buenos Aires, Argentina.

tw telecom, Inc. is a provider of managed network services, specializing in business Ethernet, data networking, converged, IP VPN, Internet access, voice, including VoIP, and network security services to enterprise organizations, including public sector entities, and carriers throughout the U.S., including their global locations. It also provides a broad range of traditional services, including a dedicated network service portfolio with private line, special access and private transport services, voice services and secure Internet access. tw telecom was founded in 1993 and is headquartered in Littleton, CO.

Level 3GC Ltd. operates as a global communications service provider. It offers data, voice and collaboration services to the companies in the Fortune 500, as well as carriers, mobile operators and Internet service providers around the world. The company offers telecommunication solutions, including broadband, voice, data, multimedia communications, readily accessible audio, video and web-conferencing. It serves Latin American businesses through its operations in Argentina, Brazil, Chile, Colombia, Ecuador, Panama, Peru, Mexico, Venezuela, the United States and the Caribbean region. The company was founded in March 1997 and is headquartered in Hamilton, Bermuda.

Global Crossing North America, Inc. provides communications solutions. The company is headquartered in Wilmington, DE.

Founded in 2007, CenturyLink Impsat Holdings II Ltd. is a British telephone communications company that provides services except radiotelephone. Part of Lumen Technologies, Inc. (Louisiana), the private company is based in London, UK.

Part of Lumen Technologies, Inc. (Louisiana), CenturyLink Argentina SA is an Argentinean company that provides non-switched and local-access telecommunications services. The private company is based in Buenos Aires, Argentina.