AT&T said Wednesday that it plans to buy the CenturyLink fiber-optic business that provides high-speed internet services to homes in 11 states, including thousands of customers in the Portland area.

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.