Experian plc is a multinational data broker and consumer credit reporting company headquartered in Dublin, Ireland. Experian collects and aggregates information on over 1 billion people and businesses including 235 million individual U.S. consumers and more than 25 million U.S. businesses. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. Experian is a partner in USPS address validation. It is one of the "Big Three" credit-reporting agencies, alongside TransUnion and Equifax. In addition to its credit services, Experian also sells decision analytic and marketing assistance to businesses, including individual fingerprinting and targeting. Its consumer services include online access to credit history and products meant to protect from fraud and identity theft. Like all credit reporting agencies, the company is required by U.S. law to provide consumers with one free credit report every year. Wikipedia