Spectrum (TV service) Trade nameSpectrumFoundedJuly 22, 1999 (as Charter Communications) 2014 (as Charter Spectrum)HeadquartersStamford, Connecticut , U.S.ProductsBroadband Cable television Digital cable Digital telephone HDTV Home security Internet Internet security Mobile phone VoIP phoneParentCharter CommunicationsSpectrum (TV service) – Wikipedia en.wikipedia.org › wiki › Spectrum_(TV_service)