Grid Telecom is a subsidiary company of IPTO and provides wholesale telecommunication services of high quality and availability. The terrestrial and underwater optical fiber network managed by Grid Telecom throughout Greece, currently exceeds 4,000 kilometers and is constantly expanding with the goal of more than doubling in the next five years. By creating metropolitan optical rings in the wider area of ​​Attica and Thessaloniki, Grid Telecom has managed to connect its network with the largest Data Centers in the country.