COSMOTE MOBILE TELECOMMUNICATIONS A.E. (Greek: COSMOTE ΚΙΝΗΤΕΣ ΤΗΛΕΠΙΚΟΙΝΩΝΙΕΣ Α.Ε.) known as just Cosmote is the largest mobile network operator in Greece. The company is headquartered in Athens and is a fully owned subsidiary of the Hellenic Telecommunications Organization (OTE), the incumbent telecommunications provider in Greece. 

COSMOTE has developed business operations in two other South East Europe countries through subsidiaries: Telekom Albania and Telekom Romania, addressing an extended market of 45 million people. In all three countries COSMOTE counts approximately 35.6 million customers.

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