As one of Denver metro's largest companies, Level 3 Communications Inc. needs a lot of space.

Level 3 (NYSE: LVLT) maintains 850,000 square feet of space in four buildings on its sprawling campus in Broomfield, which it moved into in 2001.

The buildings house 2,500 employees including the executive team, said Valerie Finberg, vice president of corporate communications and investor relations. Worldwide, Level 3 employs 13,000 people.

In addition to regular office space, the campus includes special rooms referred to as the "NOC," or network operations center, and "SOC," or security operations center, by employees.

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