COSMOTE Every possibility for communication in your hands, created in 2007 (Greece), from 53 sister brands and 3453 competing brands. COSMOTE Every possibility for communication in your hands is a brand of HELLENIC TELECOMMUNICATIONS ORGANIZATION, listed on the stock exchange of Etats-Unis. The ISIN, the company's International Securities Identification Number, is GRS260333000. COSMOTE Every possibility for communication in your hands belongs to the Telecommunication Services business sector.