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Area Code 240


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Area Code 240 was added as an overlay to area 301 on 1st June 1997. The Code 301 is one of the original area codes created in 1947 according to the NANP. The new code was introduced for providing numbering relief to existing area of the 301 code. Both of these overlaid area codes are serving the State of Maryland - United States of America. The State situated in the Middle Atlantic Area of United States of America and the Capital of the State is Annapolis.
The States which are located between New England and the South are termed as Middle Atlantic States. Main areas which make up the division are:

  • Delaware
  • Maryland
  • New Jersey
  • New York
  • Pennsylvania
  • Washington D.C.
The State of Maryland is allocated with total six area codes out of which four codes are in service while two area codes are kept reserved for future use.
  • Area Code 240 (created in 1997)
  • Area Code 301 (created in 1947)
  • Area Code 410 (created in 1991)
  • Area Code 443 (created in 1997)
  • Area Code 227 (Reserved for 240)
  • Area Code 667 (Reserved for 443)
The code 240 is surrounded by other area codes are:
  • West: 202, 304/681, 540, 571/703
  • North: 717, 724/878, 814
  • East: 410/443
  • South: 804, 304/681

List of Counties:

  • ALLEGANY,
  • ANNE ARUNDEL,
  • BALTIMORE,
  • CALVERT,
  • CHARLES,
  • FREDERICK
  • GARRETT,
  • HOWARD,
  • MONTGOMERY,
  • PRINCE GEORGES,
  • SAINT MARYS,
  • WASHINGTON,

List of Cities:


  • ADAMSTOWN
  • ANDREWS AIR FORCE BASE
  • ANNAPOLIS
  • ASHTON
  • BEL ALTON
  • BETHESDA
  • BOWIE
  • BRANDYWINE
  • BRENTWOOD
  • BRUNSWICK
  • BRYANS ROAD
  • CABIN JOHN
  • CALIFORNIA
  • CALLAWAY
  • CASCADE
  • CHELTENHAM
  • CHEVY CHASE
  • CLARKSBURG
  • CLARKSVILLE
  • CLINTON
  • COLLEGE PARK
  • COLUMBIA
  • CROFTON
  • CUMBERLAND
  • DAMASCUS
  • DERWOOD
  • DISTRICT HEIGHTS
  • ELKRIDGE
  • EMMITSBURG
  • FAULKNER
  • FORT WASHINGTON
  • FREDERICK
  • FROSTBURG
  • GAITHERSBURG
  • GERMANTOWN
  • GRANTSVILLE
  • GREAT MILLS
  • GREENBELT
  • HAGERSTOWN
  • HALETHORPE
  • HANCOCK
  • HUGHESVILLE
  • HYATTSVILLE
  • IJAMSVILLE
  • INDIAN HEAD
  • ISSUE
  • JESSUP
  • KENSINGTON
  • LA PLATA
  • LANHAM
  • LAUREL
  • LEONARDTOWN
  • LEXINGTON PARK
  • LIBERTYTOWN
  • LOTHIAN
  • MECHANICSVILLE
  • MIDDLETOWN
  • MONROVIA
  • MONTGOMERY VILLAGE
  • MOUNT AIRY
  • MOUNT RAINIER
  • MYERSVILLE
  • NANJEMOY
  • NEW MARKET
  • OAKLAND
  • ODENTON
  • OXON HILL
  • PATUXENT RIVER
  • POOLESVILLE
  • PORT TOBACCO
  • POTOMAC
  • PRINCE FREDERICK
  • RAWLINGS
  • RIDGE
  • RIVERDALE
  • ROCKVILLE
  • SABILLASVILLE
  • SANDY SPRING
  • SAVAGE
  • SHADY SIDE
  • SILVER SPRING
  • SMITHSBURG
  • SUITLAND
  • TAKOMA PARK
  • TEMPLE HILLS
  • THURMONT
  • UPPER MARLBORO
  • WALDORF
  • WALKERSVILLE
  • WESTERNPORT
  • WILLIAMSPORT
  • WOODSBORO

Leading institutions, ISPs and Telephone companies:

Some of the leading educational institutions serving the area of code 240 are:
  • Allegany College of Maryland  (301) 724-7700
  • American Association of University Affiliated (301) 588-8252
  • American College of Cardiology (301) 897-5400
  • American Friends of Hebrew University the  (301) 770-1366
  • Anne Arundel Community College (301) 261-2842
  • Anne Arundel Community College (301) 261-2842
Some of the main carriers and telephone companies for 240 areas are:
  • ACS WIRELESS, INC.
  • ALLTEL COMMUNICATIONS OF THE SOUTHWEST, LP - AZ
  • BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ
  • LEVEL 3 COMMUNICATIONS, LLC - CA
  • NEXTEL COMMUNICATIONS, INC.
  • O1 COMMUNICATIONS, INC. - CA
  • PAC - WEST TELECOMM, INC.
  • PACIFIC BELL
  • POWERTEL BIRMINGHAM LICENSES, INC.
  • QWEST CORPORATION
  • ROYAL STREET COMMUNICATIONS, LLC
  • SOUTHWESTERN BELL
  • SPRINT COMMUNICATIONS COMPANY, L.P. - AL
  • SPRINT SPECTRUM L.P.
  • TELEPORT COMMUNICATIONS GROUP - LOS ANGELES
  • TIME WARNER TELECOM OF CALIFORNIA, L.P.
  • T-MOBILE USA, INC.
  • U.S. TELEPACIFIC CORP. - CA
  • USA MOBILITY WIRELESS, INC.
  • VERIZON CALIFORNIA INC.-CA
  • VERIZON CALIFORNIA INC.-CA (GTE)
  • XO ARIZONA, INC.
  • XO CALIFORNIA, INC.
Some of the ISPs offering dialup and dedicated services for the people of 240 areas are:
  • SCR Online
  • Simply Dialup A Metrogeek Company
  • Sky Web Internet
  • Sling Broadband
  • SMS Computer Services
  • Twr Communications
  • TRYSB.NET

Reverse Phone Check for code 240:

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Almost all telephone customers want a service where they could identify a person's name or location based on their telephone number. Reverse telephone number directories contain huge database of phone numbers and the customers. You can extract information from reverse directories if you have phone number and a three-digit area code.
So many online reverse directories are on hand -- you can grab information associated with any phone number you need to know. Explore reverse directory for area code 240 if you need have get details about the phone number registered in one of the areas using the 240 code. Just provide the reverse phone directory and hit the search tab. Details will be displayed within few seconds.

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