Around the year 1953, an area code was designed whish was numbered as 817. This area was developed due to a flash cut. The fact available from the database says that in the October of 1947, original codes were created for the area. However, it is not confirmed from where it got split. According to Carl Moore, area code 817 consists of area code 915 and area code 214.

Area code 817 serves counties like Parker, Denton, Wise, Hood, Tarrant and Johnson.
Area code 817 also serves some towns and cities which are Aledo, Peaster, Arlington,Poolville,Azle, Roanoke, Bedford, Rhome, Burleson,Rio Vista, Cleburne, River Oaks, Colleyville, Southlake, Cresson, Springtown, Crowley, Trophy club, Euless, Weatherford, Flower Mound, Westworth village, Odell, Fort Worth, North Richland Hills, Godley, Mansfield, Granbury, Lillian, Grandview, Keller, Grapevine, Keene, Haltom city, Joshua, Haslet and Hurst, Aubrey, Highland Village, Double Oak, Coppell, corral City, Hackberry, Lakewood Village, Little Elm, Oak Point, Cross Roads, Justin, Frisco, Hebron, Krum, Shady, Plano, Dish, Sanger, Ponder, Northlake, Prosper, Kruger Ville, Westlake, Bolivar, Corinth, Lincoln park, Cross timber, Venus, Briar oaks, Benbrook, Euless, Blue mount, Eve man, Lakeside, Forest hill, Pantego, Watauga, White settler, Westover hill, Slidell, Alvord, Runaway bay, Balsora, Pecan acres, Boonsville, Paradise, Boyd, Newark, Bridgeport, New Fair view, Chico, Lake Bridge Port, Cotton Dale, Green Wood, Annetta, Willow park, Annetta north, Whitt, Annetta South, Reno, Brock, Mineral Wells, Cool, Hudson Oaks, Dennis, Millsap, Garner, Wheatland, Acton, Tolar, Brazos Bend, Pecan Plantation, DeCordova, Paluxy and Lipan.
Some of the cities under area code 817 are discussed below:

Grapevine is a beautiful city which has grapevine lake, Dallas International Airport and in recent time, many wineries have sprung up. In 2007, grapevine was rated as the best place to live in America.
North Richland Hills is situated in Tarrant County. It is third among all the cities of Tarrant County in the list of largest cities.
Southlake is famous for its project called Town Square. According to this plan the area allocated was doubled.
Haltom City is well known for its security system. Public safety is taken care of through a body of officers. Their police department has 80 officers.
Crowley was started by an agricultural community in 1848. In 1885, a station was built. S.H.Crowley was the in charge of the railroad construction. After his name, the city was named. The city has population of Caucasians, Latinos, African American, Native American, Asian and Pacific Islander.
Bedford has impressive highways like 121 and 183. They are also called as Airport Freeway.

There are two points worth mentioning about area code 817:

Almost all the cities have efficient educational institutions. Some of them are university of north Texas, north central Texas College and Texas women’s university, Southwestern Adventist University, liberal Arts University, Trinity valley school, Cross Timbers Academy and Nolan Catholic High School.

Another worth mentioning thing is that many cities under the area code 817 have a council which consists of a mayor and member of council. The numbers of members vary in each case.