CyrusOne is an American public corporation that owns, operates, and develops enterprise-class, carrier-neutral data centers. CyrusOne is headquartered in Carrollton, Texas and operates 33 data centers across the United States, in the United Kingdom, and in Singapore. Their first data center was based in Houston in 2001. Cincinnati Bell acquired CyrusOne in 2010 and then spun it out in 2013. As of December 31, 2015 Cincinnati Bell Inc. (CBI) owned approximately 9.5% of CyrusOne through its interest in the outstanding shares of common stock of CyrusOne Inc. CyrusOne serves customers in a range of industries, including energy, oil and gas, medical, technology, finance and consumer goods and services. The companys customers include 173 of the Fortune 1000 companies and nine of the Fortune 20.