Frontier FiOS, also known as FiOS from Frontier, is a bundled Internet access, telephone, and television service that operates over a fiber-optic communications network in 7 states, including California, Texas, Florida, Indiana, South Carolina, Oregon, and Washington. Service is offered in some areas of the United States by Frontier Communications in areas built out and formerly served by Verizon, using the same infrastructure as its Fios service and continuing to license the FiOS name from Verizon. Other service providers often use fiber optics in the network backbone and existing copper or coax infrastructure for residential users. Frontier's service began in 2009 with the acquisition of portions of Verizon's network, and networked areas expanded through 2015 through similar acquisitions