District of Maryland area codes: 240 | |
---|---|
Country | United States |
State/Province | Maryland |
Major City | Baltimore |
Time Zone | Eastern |
Prefix | County | Primary City | Company |
---|---|---|---|
240-312 | Prince Georges | Capitol Heights, MD | Cavalier Telephone Mid-atlantic |
240-313 | Washington | Hagerstown, MD | Verizon Maryland |
240-314 | Montgomery | Rockville, MD | Verizon Maryland |
240-315 | Frederick | Frederick, MD | Verizon Maryland |
240-316 | Montgomery | Chevy Chase, MD | Sprint Spectrum L.p. |
240-317 | Saint Marys | Callaway, MD | Starpower Communications |
240-318 | Prince Georges | Clinton, MD | Verizon Maryland |
240-319 | Howard | Columbia, MD | Cellco Partnership DBA Verizon Wireless |
240-320 | Charles | Waldorf, MD | Cavalier East LLC |
240-321 | Garrett | Oakland, MD | Uscoc Of Cumberland DBA United States Cel Md |
240-322 | Allegany | Mccoole, MD | Core Communications |
240-323 | Frederick | Emmitsburg, MD | Core Communications |
240-324 | Howard | Clarksville, MD | Ymax Communications Corp. |
240-325 | Montgomery | Damascus, MD | Core Communications |
240-326 | Prince Georges | Upper Marlboro, MD | Cavalier Telephone Mid-atlantic |
240-327 | Montgomery | Gaithersburg, MD | Core Communications |
240-328 | Montgomery | Rockville, MD | Verizon Maryland |
240-329 | Washington | Hagerstown, MD | Level 3 Communications |
240-330 | Montgomery | Cabin John, MD | Sprint Spectrum L.p. |
240-331 | Prince Georges | Mount Rainier, MD | Peerless Network Of Maryland |
There are 522 prefixes, In the code area, the major cities are Aspen Hill, MD;Bethesda, MD;Bowie, MD;Chillum, MD;. The major city is Baltimore.