its original full name and became known simply as CBS, Inc. The Westinghouse Electric Corporation acquired the network in 1995, renaming its corporate entity to its current name CBS Broadcasting, Inc. two years later, and eventually adopted the name of the company it had acquired to become CBS Corporation. In 2000, CBS came under the control of the original incarnation of Viacom, which was formed as a spin-off of CBS in 1971. In 2005, Viacom split itself into two separate companies and re-established CBS Corporation through the spin-off of its broadcast television, radio and select cable television and non-broadcasting assets, with the CBS network at its core. CBS Corporation was controlled by Sumner Redstone through National Amusements, which also controlled the second incarnation of Viacom until December 4, 2019, when the two separated companies agreed to re-merge to become ViacomCBS. Following the sale, CBS and its other broadcasting and entertainment assets were reorganized into a new division, CBS Entertainment Group. CBS operated the CBS Radio network until 2017, when it sold its radio division to Entercom (now known as Audacy, Inc. since 2021). Before this, CBS Radio mainly provided news and features content for its portfolio of owned-and-operated radio stations in large and mid-sized markets, as well as its affiliated radio stations in various other markets. While CBS Corporation common shareholders (i.e. not the multiple-voting shares held by National Amusements) were given a 72% stake in the combined Entercom, CBS no longer owns or operates any radio stations directly; however, it still provides radio news broadcasts to its radio affiliates and to the new owners of its former radio stations, and licenses the rights to use CBS trademarks under a long-term contract. The television network has over 240 owned-and-operated and affiliated television stations throughout the United States, some also available in Canada via pay-television providers or in border areas over-the-air. CBS was ranked 197th on the 2018 Fortune 500 of the largest American corporations by revenue. Programming , CBS provides hours of regularly scheduled network programming each week. The network provides 22 hours of primetime programming to affiliated stations Monday through Saturday from 8:00 p.m. to 11:00 p.m. and Sunday from 7:00 p.m. to 11:00 p.m. Eastern and Pacific time (7:00 p.m. to 10:00 p.m. Monday through Saturday and 6:00 p.m. to 10:00 p.m. on Sunday in Central/Mountain time). The network also provides daytime programming from 11:00 a.m. to 4:00