What area code is 945? The 945 area code is the newest local area code in the Dallas, Texas metropolitan area. It went into service on January 15, 2021, to meet the increased demand for phone lines in Dallas and its surrounding communities., Fixed phone numbers in the United States, state Texas (area code 945) are comprised of a single country code (+1), a 3 digit area code, a 3 digit local office code (or region code), and a 4 digit line code. Making a call with the wrong country, area, or region code can be costly., About area code 945: location, common spam callers, related area codes, and more. Includes 945 reverse phone lookup to identify spam callers., Area code 945 is located in Texas, within United State, serving the region's residents and businesses. The 945 area code was first assigned in 28-FEB-20 and has been in service since 15-JAN-21., Area Code 945 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 1,649,997 unique phone numbers and 2,835,216 individuals near the cities of Grand Prairie, Dallas, and Frisco., The 945 area code is a telephone area code in the North American Numbering Plan (NANP) for the northern part of the San Francisco Bay Area, including parts of Contra Costa and Solano counties..