General Information for Area Code 240 | |
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Country | United States |
State/Province | Maryland |
Major City | Baltimore |
Time Zone | Eastern |
Prefix | Primary City | County | Phone Type |
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240-312 | Capitol Heights, MD | Prince Georges | Landline |
240-313 | Hagerstown, MD | Washington | Landline |
240-314 | Rockville, MD | Montgomery | Landline |
240-315 | Frederick, MD | Frederick | Landline |
240-316 | Chevy Chase, MD | Montgomery | Cell Number |
240-317 | Callaway, MD | Saint Marys | Landline |
240-318 | Clinton, MD | Prince Georges | Landline |
240-319 | Columbia, MD | Howard | Cell Number |
240-320 | Waldorf, MD | Charles | Landline |
240-321 | Oakland, MD | Garrett | Cell Number |
240-322 | Mccoole, MD | Allegany | Landline |
240-323 | Emmitsburg, MD | Frederick | Landline |
240-324 | Clarksville, MD | Howard | Landline |
240-325 | Damascus, MD | Montgomery | Landline |
240-326 | Upper Marlboro, MD | Prince Georges | Landline |
240-327 | Gaithersburg, MD | Montgomery | Landline |
240-328 | Rockville, MD | Montgomery | Landline |
240-329 | Hagerstown, MD | Washington | Landline |
240-330 | Cabin John, MD | Montgomery | Cell Number |
240-331 | Mount Rainier, MD | Prince Georges | Landline |
Location Details |
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Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.
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