Lumen Technologies, the Colorado internet giant better known by many as CenturyLink, is selling its residential business to AT&T. AT&T will gain 1 million internet customers from the $5.75 billion acquisition, the company said in a statement. It will expand its reach in metro areas in 11 states, including Denver, according to the statement.

AT&T says its acquisition of Lumen, previously known as CenturyLink, will allow it to “significantly expand” its fiber internet service across major cities, like Denver, Las Vegas, Orlando, and others.