The first regular monthly mail service between New Mexico and the other US states began in 1849. In 2001, 93.6% of the state's occupied housing units had telephones. In 2003 there were 5 major AM radio stations and 38 major FM stations. There were 10 major network television stations in 2003. The Albuquerque-Santa Fe area had 568,650 television households, 57% of which had cable. A total of 29,730 Internet domain names were registered in the state in 2000.