Neustar, Inc. is an American technology company that provides real-time information and analytics for the Internet, telecommunications, entertainment, and marketing industries, and a provider of clearinghouse and directory services to the global communications and Internet industries. Neustar is domain name registry for .biz, .us (on behalf of United States Department of Commerce), .co, and .nyc top-level domains.

Neustar, Inc. is an American technology company that provides real-time information and analytics for the Internet, telecommunications, entertainment, and marketing industries, and a provider of clearinghouse and directory services to the global communications and Internet industries. Neustar is domain name registry for .biz, .us (on behalf of United States Department of Commerce), .co, and .nyc top-level domains.