National Public Radio (NPR, stylized in all lowercase, npr) is an American privately and publicly funded non-profit media organization based in Washington, D.C. NPR is based in two locations: main NPR headquarters in Washington, D.C. (often called the "mothership" of NPR) and NPR West headquarters in Culver City, California. NPR differs from other non-profit membership media organizations, such as AP, in that it was established by an act of Congress and most of its member stations are owned by government entities (often public universities). It serves as a national syndicator to a network of over 1,000 public radio stations in the United States.