overlays with areacode 903 (February 15, 2003) 432: West Texas: Big Spring, Midland, Odessa (April 5, 2003) 469: Dallasarea, overlays with 214, 972, and 945
to Dallas were overlaid with areacodes 214 and 972 instead of 682, as 682 overlays central Fort Worth suburban areas. In those following named areas, 817
geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan areacodes (NPA codes, or areacodes), consisting of three digits