214, 469, and 972 are the North American telephone area codes for Dallas, Texas and most of the eastern portion of the Metroplex. The main area code, 214, was one of the original area codes established in October 1947. It originally covered the entire northeastern quadrant of Texas, from Fort Worth to the border with Arkansas and Louisiana. In 1954, most of Tarrant County was combined with much of the eastern portion of area code 915 to form area code 817. In 1990, the entire eastern portion of the 214 area code was split off as area code 903. Counties served by these area codes: