OTE Group is the largest telecommunications provider in the Greek market and enabler of the country’s digital transformation. Under the COSMOTE brand, the OTE Group offers a wide range of services: fixed and mobile telephony, broadband services, pay TV, and integrated ICT solutions. Highly active in the IT Integration sector, the Group has been the partner of choice for implementing state-of-the-art solutions in the sectors of digitalization and cloud transformation, cybersecurity, the Internet of Things, e-Health, e-Tourism, and e-Energy.

Kifissias Ave 99
15124 Maroussi Athens
Greece

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Crnogorski Telekom is the largest telecommunication company in Montenegro, providing a full range of telecommunications services to business and residential customers. Although telecommunications has always been its core business, the company has evolved from a traditional operator to an innovator, finding new ways to improve the lives and businesses of its customers. Today, Crnogorski Telekom provides customers with connectivity, business partners with safe, proven, and reliable new technologies, and local communities with new ways to work and overcome the digital divide. As part of the DT Group, the company has integrated sustainability principles into its operations while social and environmental criteria remain at the heart of the company’s decision-making process.

Moskovska 29
81000 Podgorica
Montenegro

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Hrvatski Telekom is the leading provider of telecommunications services in Croatia and the only company to offer a full range of these services, including fixed and mobile telephony, data transmission, internet, and international communications.
Together with its subsidiaries, it provides telecommunications services and designs and constructs telecommunications networks in the Republic of Croatia.

Radnička 21
10000 Zagreb
Croatia

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Magenta Telekom (T-Mobile Austria GmbH) is a leading provider of internet and mobile communications, entertainment, and business solutions in Austria. The company offers ultra-fast broadband via fiber optic cable and mobile internet, entertainment, and the latest technologies for digital life and work. As part of the Deutsche Telekom Group, the company benefits from the innovative strength and financial stability of the Group, one of the world’s largest players in the telecom market.

Rennweg 97-99
1030 Vienna
Austria

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Magyar Telekom is the leading digital service provider in Hungary, supporting all of its customers as an expert advisor in their digital advancement, transition, and growth with telecommunication, IT and system integration products and solutions. Whether it's a small business or a large corporation, Telekom assists in finding answers to the questions and dilemmas that arise for business clients, ensuring that businesses become more resilient and corporations become future-proof through the help of digitalization. Magyar Telekom’s subsidiary, Telekom System Integration Ltd. is specialized on system integration with the most prestigious Hungarian projects as references both from private and public sector.

Könyves Kálmán körút 36
1097 Budapest
Hungary

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Makedonski Telekom is the leading telecommunications operator in Macedonia and has been part of the Deutsche Telekom Group since 2001. The Company provides high-quality services for both businesses and consumers in the Macedonian market.

Kej 13 Noemvri No. 6
1000 Skopje
Macedonia

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Slovak Telekom is the largest telecommunications operator in Slovakia, boasting countless years of experience and a responsible approach to business. Under the Telekom brand, it provides a comprehensive portfolio of services and a fixed mobile network to individuals, households, and corporate customers. Every year, the company invests tens of millions of euros into building its own fixed and mobile infrastructure. Telekom’s mobile networks received the Best in Test award from umlaut (P3) seven times in a row between 2015 and 2019. In December 2020, Telekom launched the first commercial 5G network service in Slovakia.

Bajkalská 28
817 62 Bratislava
Slovakia

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T-Mobile is the biggest mobile network operator in Czechia, providing mobile services to 6.3 million customers. The company is both developing and building fiber optic infrastructure in Czechia, driving the country’s digital transformation on its path to becoming a Connected Country.

Tomíčkova 2144/1
148 00 Praha 4
Czechia

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We harness state-of-the-art technologies and a comprehensive range of ICT solutions to create a digital environment that helps businesses and institutions grow.

Marynarska 12
02-674 Warsaw
Poland

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Telekom Deutschland offers consumers and businesses in Germany a full range of telecommunications services from a single provider, including fixed-network and mobile communications services. It also provides wholesale telecommunications services for other segments and competitors and remains the market leader in Germany in terms of both fixed-network and mobile revenues. The company’s success is based on high-performance networks, outstanding network quality, a broad product portfolio, and excellent service.

Friedrich Ebert Allee 140
53113 Bonn
Germany

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Telekom Romania Mobile is a telecommunications company based in Bucharest, offering Romanians the highest quality mobile services. We give our customers the experience they want and our slogan "Mobile as you want it" is our guiding principle in everything we do. We simplify customers' lives by giving them unlimited mobility to stay connected anywhere, anytime, from any device, hassle-free and worry-free.

@Expo 1C Expozitiei Blvd. 3rd floor - 1st District
012101 Bucharest
Romania

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