NetSpen Corporation, headquartered in Austin, TX, provides processing and marketing services for private and proprietary MasterCard and Visa prepaid debit cards. The company is the largest prepaid debit card processor and marketer in the United States and sells cards at about 10,000 grocery and convenience stores, gas stations and check-cashing centers nationwide. According to an article by the Austin Business Journalthe privately held company has 225 employees, annual revenues in the $75 million to $125 million range and processes over $5 billion annually in card transactions. Its website states that the company has over 1 million customers nationwide.