In 2001, 94.9% of South Carolina's occupied housing units had telephones. The state had 62 major radio stations (26 AM, 36 FM) and 20 major television stations in 2003. South Carolina has one of the most highly regarded educational television systems in the nation, with ten stations serving the public schools, higher education institutions, state agencies, and the general public through a multichannel closed-circuit network and seven open channels. The Charlotte area alone had 880,570 television households, 67% receiving cable. Some 45,839 Internet domain names were registered in the state by the year 2000.