AT&T Inc. agreed to buy the consumer fiber operations of Lumen Technologies Inc. for $5.75 billion, expanding its fast broadband service in major cities like Denver and Las Vegas. AT&T will pay cash for the unit of Lumen,

AT&T has announced it will acquire Lumen's mass market fiber business for $5.75 billion. In doing so, the carrier says it will expand investment in critical US connectivity infrastructure, create new middle-class jobs,

CenturyLink and Quantum Fiber, two high-speed residential internet brands in Minnesota, are part of a $5.75 billion deal that will expand telecom giant AT&T's broadband reach.