Cooolbox is a Bulgarian Network Service Provider with over twenty years of experience in the development of communication solutions for private customers, small and medium - sized companies. The Cooolbox network is entirely built on the FTTH - AON technology and is the only one of its kind in Bulgaria. In recent years, the network has been completely refurbished and expanded and is consistent with the high standards of technology used. The equipment of Cooolbox is situated in the two major data centers in Sofia, providing full redundancy of the network and management systems.