Area code 240 was first put in service June 01, 1997. Area code 240 is in USA (Maryland). 1-800-database has 1508 records on file with a phone number in the area code of (240) and 171 comments.

The carriers providing phone numbers in 240 area code are: 365 Wireless, Allegiance Telecom, AT&T Local, Atx Telecommunications Services, Ltd, Baltimore-washington Telephone (bwt), Bandwidth.com Clec, Broadvox-clec - DC, Broadwing Communications. LLC, Cavalier East LLC, Cavalier Telephone Mid-atlantic, Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Comcast Phone Of Northern Maryland, Core Communications, Dslnet Communications Va, Global Crossing Local Services-md, Global Naps South, Halo Wireless Services, Leap Wireless Intl DBA Cricket Comm, Level 3 Communications, Lightwave Communications, Local Access LLC, Lumos Networks Inc. - VA, Mci Worldcom Communications, Metro PCS, Mte DBA Mte Paging Network, New Cingular Wireless PCS - DC, Omnipoint Communications Cap Operations, Paetec Communications, Paetec Communications - DC, Peerless Network Of Maryland, Peerless Network Of The District Of Columbia, Dc, Shentel Communications, Sprint Spectrum L.p., Starpower Communications, Telcove Operations, Teleport Communications America, Teleport Communications America - DC, Tw Telecom Of Maryland LLC, Uscoc Of Cumberland DBA United States Cel Md, Us Lec Of Maryland, Verizon Maryland, Xo Maryland, Ymax Communications Corp..

Counties located in area code 240 are: ALLEGANY, ANNE ARUNDEL, BALTIMORE CITY, CHARLES, DISTRICT OF COLUMBIA, FREDERICK, GARRETT, HOWARD, MINERAL, MONTGOMERY, PRINCE GEORGES, SAINT MARYS, WASHINGTON.



State: Maryland

Largest city: Germantown

In service since: 06/01/1997

Timezone: Eastern


Major Cities in 240
Frederick, MD (65,239)
Rockville, MD (61,209)
Gaithersburg, MD (59,933)
Bowie, MD (54,727)
Hagerstown, MD (39,662)
College Park, MD (30,413)
Greenbelt, MD (23,068)
Cumberland, MD (20,859)
Zip Codes in 240
2002420601
2061320637
2064020646
2065020653
2065920662
2066420680
2070520707
2072020735
2077220781
2081520817
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