Boulder-based Zayo Group said this morning that its colocation division, zColo, has acquired Colo Facilities Atlanta (AtlantaNAP), a data center and managed services provider in Atlanta. Financial terms of the buy were not disclosed. Zayo said the buy gives it over 72,000 square feet of new data center space, and expands its total data center count to 28 locations. Zayo said the new service will help it serve the growing hub of healthcare, technology, and large enterprises in Atlanta. Colo Facilities Atlanta was advised by The Bank Street Group LLC in the deal.