ount. RCN Corporation is the largest overbuilder. It offers service in New York City, eastern Massachusetts, Philadelphia, and Washington, DC. RCN declared bankruptcy in 2004 and still was not consistently profitable after emerging from it. Private equity firm ABRY Partners purchased RCN in 2010. ABRY has investments in a number of telecommunications firms including cable TV providers Atlantic Broadband and Grande Communications. Competitive Carriers Competitive carriers offer similar products and services as AT&T, Inc., and Verizon Communications. Windstream and EarthLink are examples of competitive carriers. These carriers sell advanced data communications services, Internet access, and voice calling, and after 2006, they branched out to hosted and cloud computing services. For the most part, they do not offer mobile services. Competitive broadband providers are also referred to as Competitive Local Exchange Carriers (CLECs) or integrated network providers. CLECs compete against incumbent telephone companies, cable TV operators, and one another for commercial customers. For the most part, they sell to small and mid- size companies rather than international conglomerates because they don't have the nationwide coverage or intracity last-mile connections directly to customers that large incumbents own. Those competitive carriers that remain are facilities-based operators that own inter-city fiber-optic networks and the equipment (switches and multiplexers) used to transmit traffic between locations. Although these facilities are not as extensive as AT&T, Verizon, and CenturyLink, they do give them control over the quality of ser- vices over interstate networks and often metropolitan areas where they offer service to customers. These competitors compete with cable TV operators and large incumbents. Many of them have purchased other providers. This increases their coverage area, and enables them to cut overhead costs, expand their offerings, and gain bargaining clout with suppliers. It has also provided them with th