United Internet AG operates as an internet service provider through its subsidiaries worldwide. It operates in four segments: Consumer Access, Business Access, Consumer Applications, and Business Applications. The company offers landline-based broadband and mobile internet products, including home networks, online storage, smart home, and IPTV for private users, as well as telecommunication products such as fiber-optic direct connections and tailored ICT solutions. It also provides applications and services for home users, business applications for freelancers and small to medium enterprises, and professional services in domain management, advertising, and website building. Founded in 1988, the company is headquartered in Montabaur, Germany.