Piotr Sieluk

Atman sp. z o.o. engages in the provision of internet, wired telecommunication, and television broadcasting services. It operates through the following business segments: Data Center Services, Telecommunications Services, and Other. The Data Center Services segment offers colocation services and other services related to data center infrastructure. The Telecommunications Services segment includes broadband data transmission services, telecommunications lines leased services, internet access services, and voice services. The company was founded by Tadeusz Czichon in 1987 and is headquartered in Warsaw, Poland.

Part of Deutsche Telekom AG, GTS Polska Sp Zoo is a Polish company that provides IT security services such as Security Operations Center to ensure the safety of their clients' infrastructure. The private company is based in Warsaw, Poland. The company also offers a Virtual Data Center that operates on an Infrastructure as a Service (IaaS) model, providing a flexible and secure IT environment. Additionally, they provide VPN as a Service to enable secure remote access to company data. Piotr Sieluk has been the CEO of the company since 2008.

BENESTRA, s. r. o. provides voice, data, internet and hosting services. Its service portfolio includes voice and data communication solutions, internet connectivity solutions, data centers, and hosting services on both physical and virtual platforms. The company was founded in 1999 and is headquartered in Bratislava, Slovakia.