Cornerstone Communications was founded in 1989 and is one of the leading high-speed internet service providers in the United States. They provide an array of reliable internet services ranging from dial-up, DSL and fiber-based Ethernet to wireless and fiber optics. Their coverage area spans the entire continental United States and includes over 75,000 ZIP codes. High-speed services are available in select areas and speeds range from 10 Mbps to 1,000 Mbps. In addition, Cornerstone offers a variety of packages to accommodate both consumer and business customers, all at competitive rates. Cornerstone Communications is committed to providing quality service and employs dedicated staff and technicians to ensure maximum network performance. Their customer service and technical support teams are available 24/7 via phone, email, and live chat.