(UUNET Technologies, Inc., Fairfax, VA, www.uunet.net) Founded in 1987, UUNET was the first commercial Internet service provider. Originally offering e-mail and news, it became a full Internet service organization providing dial-up and leased line accounts as well as archive space for files and Web pages. UUNET stands for Unix to Unix Network. In 1996, UUNET was acquired by MFS Communications, which was acquired by WorldCom in that same year (WorldCom became MCI, which was acquired by Verizon in 2005). See Worldcom.