About NTT Ltd World Headquarters Ashburn, Va Sitting on NTT's 78-acre data center campus, the 188,000-square-foot VA6 data center will feature 24MW of critical IT load and will be NTT's sixth data center on-site. The two-story steel structure will feature an efficient data hall layout for NTT's customers. The facility will also provide front and back-of-house support spaces for facility management and customer use. VA6 is slated for completion in Q1 2024.