Level 3 Communications is a global communications provider headquartered in Broomfield, Colorado, since 1999. The headquarters building itself is a 42-acre campus complex in Broomfield's Interlocken Advanced Technology Park.
While the current building was being constructed, the company leased office space in Golden and Louisville. Colorado was selected as the permanent home of the company for a number of factors, including the availability of the skilled labor force the company needed and an international airport. Level 3 also had a number of business relationships in the state before making its headquarters there. The company's network extends far beyond its base of operations, servicing over 500 different markets across 60 countries.