USA Phone Code Guide
USA Phone
Code Guide

Telephone Area +1 (240) XXX-XXXX / Page 3

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) XXX-XXXX

Other pages: 123567
Company District Major City Prefix
Nextel CommunicationsMontgomeryChevy Chase, MD+1 (240) 464-XXXX
Global Naps SouthMontgomeryBethesda, MD+1 (240) 465-XXXX
Global Naps SouthSaint Mary'sMechanicsville, MD+1 (240) 466-XXXX
Sprint Spectrum L.p.Mount Rainier, MD+1 (240) 468-XXXX
Sprint Spectrum L.p.Hagerstown, MD+1 (240) 469-XXXX
Global Crossing Local Services-mdMontgomerySilver Spring, MD+1 (240) 471-XXXX
New Cingular Wireless PCS - DCMontgomerySilver Spring, MD+1 (240) 472-XXXX
Cavalier Telephone Mid-atlanticPrince George'sCollege Park, MD+1 (240) 473-XXXX
New Cingular Wireless PCS - DCMontgomerySilver Spring, MD+1 (240) 475-XXXX
Omnipoint Communications Cap OperationsMontgomerySilver Spring, MD+1 (240) 476-XXXX
Lightwave CommunicationsMontgomeryGaithersburg, MD+1 (240) 477-XXXX
New Cingular Wireless PCS - DCMontgomerySilver Spring, MD+1 (240) 478-XXXX
Cellco Partnership DBA Verizon WirelessOxon Hill, MD+1 (240) 479-XXXX
Sprint Spectrum L.p.Bethesda, MD+1 (240) 480-XXXX
Omnipoint Communications Cap OperationsMontgomerySilver Spring, MD+1 (240) 481-XXXX
Us Lec Of MarylandMontgomeryBethesda, MD+1 (240) 482-XXXX
Comcast Phone Of Northern MarylandMontgomeryBethesda, MD+1 (240) 483-XXXX
Us Lec Of MarylandMontgomeryCabin John, MD+1 (240) 485-XXXX
Omnipoint Communications Cap OperationsPrince George'sGlenn Dale, MD+1 (240) 486-XXXX
Us Lec Of MarylandPrince George'sHyattsville, MD+1 (240) 487-XXXX
Xo MarylandMontgomeryPoolesville, MD+1 (240) 489-XXXX
Omnipoint Communications Cap OperationsFrederickMiddletown, MD+1 (240) 490-XXXX
Global Crossing Local Services-mdMontgomeryMount Rainier, MD+1 (240) 491-XXXX
Us Lec Of MarylandPrince George'sCapitol Heights, MD+1 (240) 492-XXXX
Us Lec Of MarylandPrince George'sOxon Hill, MD+1 (240) 493-XXXX
Cavalier East LLCMontgomeryMount Rainier, MD+1 (240) 494-XXXX
Verizon MarylandMontgomeryChevy Chase, MD+1 (240) 497-XXXX
Sprint Spectrum L.p.Prince George'sBeltsville, MD+1 (240) 498-XXXX
Us Lec Of MarylandMontgomeryCabin John, MD+1 (240) 499-XXXX
Us Lec Of MarylandHagerstown, MD+1 (240) 500-XXXX
Sprint Spectrum L.p.MontgomerySilver Spring, MD+1 (240) 501-XXXX
Omnipoint Communications Cap OperationsMontgomerySilver Spring, MD+1 (240) 505-XXXX
New Cingular Wireless PCS - DCMontgomeryRockville, MD+1 (240) 506-XXXX
Cellco Partnership DBA Verizon WirelessCabin John, MD+1 (240) 507-XXXX
Nextel CommunicationsPrince George'sCapitol Heights, MD+1 (240) 508-XXXX
Bandwidth.com ClecCrofton, MD+1 (240) 509-XXXX
Xo MarylandPrince George'sUpper Marlboro, MD+1 (240) 510-XXXX
Core CommunicationsCollege Park, MD+1 (240) 512-XXXX
Us Lec Of MarylandMontgomeryCabin John, MD+1 (240) 514-XXXX
New Cingular Wireless PCS - DCMontgomeryBethesda, MD+1 (240) 515-XXXX
Us Lec Of MarylandMontgomerySilver Spring, MD+1 (240) 516-XXXX
Sprint Spectrum L.p.Hagerstown, MD+1 (240) 520-XXXX
Sprint Spectrum L.p.AlleganyCumberland, MD+1 (240) 522-XXXX
Xo MarylandCharlesLa Plata, MD+1 (240) 523-XXXX
Global Naps SouthPrince George'sRussett, MD+1 (240) 524-XXXX
Global Naps SouthPrince George'sUpper Marlboro, MD+1 (240) 525-XXXX
Global Naps SouthSaint Mary'sLeonardtown, MD+1 (240) 526-XXXX
Verizon MarylandWashingtonHagerstown, MD+1 (240) 527-XXXX
Broadwing Communications. LLCCharlesHughesville, MD+1 (240) 528-XXXX
Verizon MarylandFrederickFrederick, MD+1 (240) 529-XXXX
Teleport Communications Group - DCPrince George'sMount Rainier, MD+1 (240) 533-XXXX
New Cingular Wireless PCS - DCMontgomerySilver Spring, MD+1 (240) 535-XXXX
Global Naps SouthMontgomerySandy Spring, MD+1 (240) 536-XXXX
Xo MarylandSaint Mary'sLeonardtown, MD+1 (240) 538-XXXX
Global Naps SouthPrince George'sHyattsville, MD+1 (240) 539-XXXX
+1 (240) 540-XXXX
Us Lec Of MarylandPrince George'sCollege Park, MD+1 (240) 542-XXXX
Sprint Spectrum L.p.Bethesda, MD+1 (240) 543-XXXX
Us Lec Of MarylandPrince George'sGlenn Dale, MD+1 (240) 544-XXXX
Us Lec Of MarylandPrince George'sUpper Marlboro, MD+1 (240) 545-XXXX
Us Lec Of MarylandPrince George'sClinton, MD+1 (240) 546-XXXX
Level 3 CommunicationsPrince George'sRussett, MD+1 (240) 547-XXXX
Allegiance TelecomPrince George'sMount Rainier, MD+1 (240) 548-XXXX
Leap Wireless Intl DBA Cricket CommRockville, MD+1 (240) 550-XXXX
Leap Wireless Intl DBA Cricket CommRockville, MD+1 (240) 551-XXXX
Leap Wireless Intl DBA Cricket CommRockville, MD+1 (240) 552-XXXX
Allegiance TelecomPrince George'sMount Rainier, MD+1 (240) 553-XXXX
Allegiance TelecomPrince George'sLaurel, MD+1 (240) 554-XXXX
Paetec CommunicationsPrince George'sGlenn Dale, MD+1 (240) 556-XXXX
Cavalier Telephone Mid-atlanticMontgomeryKensington, MD+1 (240) 558-XXXX
Allegiance TelecomMontgomerySandy Spring, MD+1 (240) 559-XXXX
Xo MarylandMontgomeryChevy Chase, MD+1 (240) 560-XXXX
Cellco Partnership DBA Verizon WirelessLeonardtown, MD+1 (240) 561-XXXX
Omnipoint Communications Cap OperationsPrince George'sLaurel, MD+1 (240) 565-XXXX
Verizon MarylandFrederickFrederick, MD+1 (240) 566-XXXX
Verizon MarylandRockville, MD+1 (240) 567-XXXX
Verizon MarylandPrince George'sLaurel, MD+1 (240) 568-XXXX
Global Crossing Local Services-mdPrince George'sUpper Marlboro, MD+1 (240) 573-XXXX
Level 3 CommunicationsFrederickFrederick, MD+1 (240) 575-XXXX
Cellco Partnership DBA Verizon WirelessLeonardtown, MD+1 (240) 577-XXXX

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