Cincinnati Bell is a regional telecommunications service provider based in Cincinnati, Ohio, United States. It provides landline telephone, fiber-optic Internet, and IPTV services through its subsidiaries Cincinnati Bell Telephone and Hawaiian Telcom, which are the incumbent local exchange carriers for the Cincinnati and Dayton metropolitan areas and Hawaii. Other subsidiaries provide enterprise information technology services and long distance calling., Cincinnati Bell was founded in 1873 as a telegraph company and for much of its history was a Bell System franchisee. In the 1990s, Cincinnati Bell expanded into Internet access and mobile phone services. The company divested its mobile phone service in 2014 to focus on enterprise and fiber-optic services. It was acquired in 2020 by Macquarie Infrastructure and Real Assets .