Neustar, Inc., is an American technology company that provides real-time information and analytics for the Internet, risk, digital performance, defense, telecommunications, entertainment, and marketing industries, and also provides clearinghouse and directory services to the global communications and Internet industries. Neustar is the domain name registry for a number of top-level domains, including .biz, .us (on behalf of United States Department of Commerce), .co, .nyc (on behalf of the city of New York), and .in (on behalf of the National Internet Exchange of India).