Here's a list of area codes in Dallas and surrounding cities.
Dallas, Allen, Anna, Carrollton, Cedar Hill, Celina, De Soto, Ennis, Frisco, Grand Prairie, Irving, Lewisville, McKinney, Plano, Prosper, Red Oak, Rockwall, and Waxahachie
Dallas, Allen, Anna, Bristol, Carrollton, Cedar Hill, Celina, Crandall, De Soto, Ennis, Farmersville, Ferris, Forney, Frisco, Grand Prairie, Irving, Italy, Kaufman, Lewisville, Maypearl, McKinney, Midlothian, Milford, Palmer, Plano, Princeton, Prosper, Red Oak, Rockwall, Royse City, Seagoville, Terrell, Venus, and Waxahachie
Alvarado, Arlington, Atlas, Cleburne, Denton, Euless, Fort Worth, Glendale, Granbury, Grapevine, Keller, Kennedale, Mansfield, North Richland Hills, Roanoke, and Weatherford
Dallas, Allen, Anna, Arlington, Avalon, Bardwell, Blue Ridge, Bristol, Carrollton, Cedar Hill, Celina, Combine, Crandall, De Soto, Ennis, Farmersville, Ferris, Forney, Frisco, Grand Prairie, Irving, Italy, Josephine, Kaufman, Lewisville, Mayperarl, McKinney, Midlothian, Milford, Nevada, Palmer, Plano, Princeton, Prosper, Red Oak, Rockwall, Royse City, Scurry, Seagoville, Terrell, Venus, Waxahachie, and Wilmer
Acton, Alvarado, Arlington, Atlas, Azle, Cleburne, Cresson, Denton, Euless, Fort Worth, Glendale, Godley, Granbury, Grandview, Grapevine, Keller, Kennedale, Mansfield, North Richland Hills, Reno, Rhome, Rio Vista, Roanoke, Springtown, and Weatherford