North American Telephone Operator
North American
Telephone Operator

Telephone Area 240. Page 1.

Phone numbers of the state Maryland
Prefix: +1240
This prefix is distributed within the state Maryland
The largest city in the region is Gaithersburg
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
Below on the map, there is indicated the largest city in the telephone area +1-240-...-.... Maryland Gaithersburg.

In the United States, telephone numbers are divided into a country code (+1), an area code (or prefix), which is three digits long, and a subscriber number (seven digits). These are just a few examples, and there are over 300 area codes in the United States. Each code can cover both large cities and less populated areas depending on population density and telephone network distribution.

The table below shows the main major cities and telecom operators.

If you notice any errors of any community’s location on the map, please report it via the feedback form.

Phone numbers +1-240-YYY-YYYY

Other pages: 134567
Company District Major City Prefix
NationslineFrederickThurmont, MD+1-240288-SSSS
Cavalier Telephone Mid-atlanticPrince George'sOxon Hill, MD+1-240289-SSSS
Allegiance TelecomPrince George'sMount Rainier, MD+1-240290-SSSS
New Cingular Wireless PCS - DCWashingtonHagerstown, MD+1-240291-SSSS
Verizon MarylandMontgomeryKensington, MD+1-240292-SSSS
Starpower CommunicationsMontgomerySilver Spring, MD+1-240293-SSSS
Xo MarylandPrince George'sLaurel, MD+1-240294-SSSS
Cavalier Telephone Mid-atlanticPrince George'sLaurel, MD+1-240295-SSSS
Cavalier Telephone Mid-atlanticPrince George'sHyattsville, MD+1-240296-SSSS
Level 3 CommunicationsPrince George'sCollege Park, MD+1-240297-SSSS
Cellco Partnership DBA Verizon WirelessSaint Mary'sLeonardtown, MD+1-240298-SSSS
Nextel CommunicationsCharlesWaldorf, MD+1-240299-SSSS
Cellco Partnership DBA Verizon WirelessWaldorf, MD+1-240300-SSSS
Cavalier Telephone Mid-atlanticPrince George'sClinton, MD+1-240303-SSSS
Nextel CommunicationsPrince George'sMount Rainier, MD+1-240304-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240305-SSSS
Allegiance TelecomMontgomeryGaithersburg, MD+1-240306-SSSS
AT&T LocalFrederickEmmitsburg, MD+1-240307-SSSS
New Cingular Wireless PCS - DCMontgomeryDamascus, MD+1-240308-SSSS
Uscoc Of Cumberland DBA United States Cel MdWashingtonHagerstown, MD+1-240310-SSSS
Cavalier Telephone Mid-atlanticPrince George'sCapitol Heights, MD+1-240312-SSSS
Verizon MarylandWashingtonHagerstown, MD+1-240313-SSSS
Verizon MarylandMontgomeryRockville, MD+1-240314-SSSS
Verizon MarylandFrederickFrederick, MD+1-240315-SSSS
Sprint Spectrum L.p.Chevy Chase, MD+1-240316-SSSS
Starpower CommunicationsSaint Mary'sCallaway, MD+1-240317-SSSS
Verizon MarylandPrince George'sClinton, MD+1-240318-SSSS
Cellco Partnership DBA Verizon WirelessColumbia, MD+1-240319-SSSS
Cavalier East LLCCharlesWaldorf, MD+1-240320-SSSS
Uscoc Of Cumberland DBA United States Cel MdGarrettOakland, MD+1-240321-SSSS
Core CommunicationsAlleganyMccoole, MD+1-240322-SSSS
Core CommunicationsFrederickEmmitsburg, MD+1-240323-SSSS
Ymax Communications Corp.Clarksville, MD+1-240324-SSSS
Core CommunicationsMontgomeryDamascus, MD+1-240325-SSSS
Cavalier Telephone Mid-atlanticPrince George'sUpper Marlboro, MD+1-240326-SSSS
Core CommunicationsMontgomeryGaithersburg, MD+1-240327-SSSS
Verizon MarylandMontgomeryRockville, MD+1-240328-SSSS
Level 3 CommunicationsWashingtonHagerstown, MD+1-240329-SSSS
Sprint Spectrum L.p.Cabin John, MD+1-240330-SSSS
Global Naps SouthMontgomerySilver Spring, MD+1-240331-SSSS
Global Naps SouthCharlesNewburg, MD+1-240332-SSSS
Cavalier East LLCMontgomeryMount Rainier, MD+1-240333-SSSS
Global Crossing Local Services-mdPrince George'sMount Rainier, MD+1-240334-SSSS
Cavalier Telephone Mid-atlanticPrince George'sGlenn Dale, MD+1-240335-SSSS
Core CommunicationsMontgomeryBethesda, MD+1-240336-SSSS
Global Naps SouthPrince George'sCapitol Heights, MD+1-240337-SSSS
Cellco Partnership DBA Verizon WirelessMontgomerySilver Spring, MD+1-240338-SSSS
Cavalier East LLCPrince George'sUpper Marlboro, MD+1-240339-SSSS
Mci Worldcom CommunicationsAdamstown, MD+1-240341-SSSS
Starpower CommunicationsMontgomerySandy Spring, MD+1-240342-SSSS
Cellco Partnership DBA Verizon Wireless+1-240343-SSSS
New Cingular Wireless PCS - DCFrederickFrederick, MD+1-240344-SSSS
Level 3 CommunicationsSandy Spring, MD+1-240345-SSSS
Sprint Spectrum L.p.CharlesWaldorf, MD+1-240346-SSSS
Bandwidth.com ClecHagerstown, MD+1-240347-SSSS
Level 3 CommunicationsPrince George'sClinton, MD+1-240348-SSSS
Global Crossing Local Services-mdCharlesLa Plata, MD+1-240349-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240350-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240351-SSSS
Global Naps SouthCharlesLa Plata, MD+1-240352-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240353-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240354-SSSS
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1-240355-SSSS
Level 3 CommunicationsFrederickFrederick, MD+1-240356-SSSS
Cellco Partnership DBA Verizon WirelessFrederick, MD+1-240357-SSSS
Global Naps SouthMontgomeryDamascus, MD+1-240358-SSSS
Global Naps SouthCharlesIndian Head, MD+1-240359-SSSS
Cavalier Telephone Mid-atlanticMontgomeryGaithersburg, MD+1-240361-SSSS
Verizon MarylandAlleganyCumberland, MD+1-240362-SSSS
Global Naps SouthMontgomeryKensington, MD+1-240363-SSSS
Cavalier East LLCMontgomeryGaithersburg, MD+1-240364-SSSS
Baltimore-washington Telephone BwtMontgomeryDamascus, MD+1-240365-SSSS
AT&T LocalWashingtonWilliamsport, MD+1-240366-SSSS
Nextel CommunicationsFrederickFrederick, MD+1-240367-SSSS
Global Naps SouthCharlesWaldorf, MD+1-240368-SSSS
Core CommunicationsFrederickMount Airy, MD+1-240369-SSSS
Sprint Spectrum L.p.Bethesda, MD+1-240370-SSSS
Global Naps SouthMontgomerySilver Spring, MD+1-240371-SSSS
Nextel CommunicationsMontgomeryGaithersburg, MD+1-240372-SSSS
Verizon MarylandAnne ArundelOdenton, MD+1-240373-SSSS

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