Area Code 301-600 : Area Code 301-699 is your one-stop site for area code lookup, phone number lookup, and free phone number reviews. Following is reverse lookup detail & reviews for area code 301 6xx including 301 area code location map. Major cities such as Washington, Beltsville, Frederick, Mc Lean, Silver Spring covered within area code 301 6xx are also listed on this page. More area codes, including those outside of Maryland, United States of America, are on the homepage.

Reverse Lookup Detail for Area Code 301 6xx

Area code 301 covers part of Marylandstate, covering most of Montgomery, Prince George's, Frederick, Charles, Washington counties. It was started on Jan 01, 2000. This region follows US/Eastern + Daylight Savings timezone. Other popular area codes that belong to Maryland state include 240, 410, 443, 667.

Verified changes in Area Code 301 6XX

Date ChangedChange Details
Apr 02, 2014Area code 301-666 was introduced on Mar 05, 2014 and subscribers are operational from Apr 02, 2014.
Mar 21, 2014Area code 301-636 was introduced on Jul 21, 2010 and subscribers are operational from Mar 21, 2014.
Mar 21, 2014Area code 301-690 was introduced on Jul 20, 2010 and subscribers are operational from Mar 21, 2014.
Feb 01, 2014Area code 301-691 was introduced on Dec 05, 2013 and subscribers are operational from Feb 01, 2014.
Oct 01, 2013Area code 301-692 was introduced on Aug 05, 2013 and subscribers are operational from Oct 01, 2013.
Sep 08, 2013Area code 301-660 was introduced on Aug 13, 2013 and subscribers are operational from Sep 08, 2013.

Area Code 301-600 - Area Code 301-699 (Covers 301 6xx xxxx phone numbers)

Area CodeCityCountyPopulationNetwork Operator
301-600-0FrederickFrederick233,385Verizon Maryland Inc
301-601GermantownMontgomery971,777Verizon Maryland Inc
301-602Annapolis JunctionMontgomery971,777Cellco Partnership dba Verizon Wireless - MD
301-603-0Silver SpringMontgomery971,777Verizon Maryland Inc
301-604LaurelPrince George's863,420Verizon Maryland Inc
301-605-7AlexandriaMontgomery971,777Comcast Phone of Northern Maryland Inc - MD
301-605-5BeltsvilleMontgomery971,777Omnipoint Communications Cap Operations LLC
301-605-1Chevy ChaseMontgomery971,777Paetec Communications Inc - MD
301-605-8LaurelMontgomery971,777VDL Inc dba Global Telecom Brokers - MD
301-605-9Mc LeanMontgomery971,777Level 3 Communications LLC - MD
301-605-0PoolesvilleMontgomery971,777Verizon Maryland Inc
301-606FrederickFrederick233,385Cellco Partnership dba Verizon Wireless - MD
301-607BuckeystownFrederick233,385Verizon Maryland Inc
301-607FrederickFrederick233,385Verizon Maryland Inc
301-607Mount AiryFrederick233,385Verizon Maryland Inc
301-607New MarketFrederick233,385Verizon Maryland Inc
301-608Silver SpringMontgomery971,777Verizon Maryland Inc
301-609-0La PlataCharles146,551Verizon Maryland Inc
301-609-2WashingtonCharles146,551Cellco Partnership dba Verizon Wireless - MD
301-610RockvilleMontgomery971,777Verizon Maryland Inc
301-611628,613Telco Repair Service
301-612-0BaltimoreHoward287,085Teleport Communications America LLC - MD
301-613BeltsvilleMontgomery971,777Sprint Spectrum LP
301-614Berwyn HeightsPrince George's863,420Verizon Maryland Inc
301-615Berwyn HeightsPrince George's863,420Verizon Maryland Inc
301-616CumberlandGarrett30,097USCOC of Cumberland Inc dba United States Cellular - MD
301-617LaurelPrince George's863,420Verizon Maryland Inc
301-618-0LandoverPrince George's863,420Verizon Maryland Inc
301-618-6Mc LeanPrince George's863,420US LEC of Maryland Inc
301-618-0Silver SpringPrince George's863,420Peerless Network of Maryland LLC
301-618-9WashingtonPrince George's863,420YMax Communications Corporation - MD
301-619FrederickFrederick233,385Verizon Maryland Inc
301-620FrederickFrederick233,385Verizon Maryland Inc
301-621ColumbiaHoward287,085Verizon Maryland Inc
301-621ElkridgeHoward287,085Verizon Maryland Inc
301-621OdentonHoward287,085Verizon Maryland Inc
301-622Silver SpringMontgomery971,777Verizon Maryland Inc
301-623-0WashingtonPrince George's863,420Teleport Communications America LLC - DC
301-624FrederickFrederick233,385Verizon Maryland Inc
301-625Silver SpringMontgomery971,777Verizon Maryland Inc
301-626Silver SpringMontgomery971,777Verizon Maryland Inc
301-627Upper MarlboroPrince George's863,420Verizon Maryland Inc
301-628-9BeltsvilleMontgomery971,777Sprint Spectrum LP
301-628-0WashingtonMontgomery971,777Teleport Communications America LLC - DC
301-629ColumbiaHoward287,085Verizon Maryland Inc
301-630Temple HillsPrince George's863,420Verizon Maryland Inc
301-631FrederickFrederick233,385Verizon Maryland Inc
301-632WaldorfCharles146,551Verizon Maryland Inc
301-633BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-634WashingtonMontgomery971,777Teleport Communications America LLC - DC
301-635HagerstownFrederick233,385New Frontiers Telecommunications Inc
301-636-4AlexandriaPrince George's863,420Comcast Phone of Northern Maryland Inc - MD
301-636-0LandoverPrince George's863,420Verizon Maryland Inc
301-636-7WashingtonPrince George's863, CLEC LLC - MD
301-637-9AlexandriaMontgomery971,777Comcast Phone of Northern Maryland Inc - MD
301-637-0Mc LeanMontgomery971,777Level 3 Communications LLC - MD
301-637-1WashingtonMontgomery971,777CTC Communications Corporation - MD
301-638WaldorfCharles146,551Verizon Maryland Inc
301-639FrederickFrederick233,385Cellco Partnership dba Verizon Wireless - MD
301-640-8BeltsvilleMontgomery971,777MetroPCS Inc
301-640-9BeltsvilleMontgomery971,777Omnipoint Communications Cap Operations LLC
301-640-0GaithersburgMontgomery971,777Verizon Maryland Inc
301-640-5WashingtonMontgomery971,777Broadvox - CLEC LLC - DC
301-641AdelphiMontgomery971,777Cellco Partnership dba Verizon Wireless - MD
301-642BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-643WashingtonCharles146,551Cellco Partnership dba Verizon Wireless - MD
301-644FrederickFrederick233,385Verizon Maryland Inc
301-645WaldorfCharles146,551Verizon Maryland Inc
301-646BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-647LaurelPrince George's863,420Verizon Maryland Inc
301-648BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-649Silver SpringMontgomery971,777Verizon Maryland Inc
301-650Silver SpringMontgomery971,777Verizon Maryland Inc
301-651AdelphiMontgomery971,777Cellco Partnership dba Verizon Wireless - MD
301-652Chevy ChaseMontgomery971,777Verizon Maryland Inc
301-653BeltsvilleCharles146,551New Cingular Wireless PCS LLC - DC
301-654Chevy ChaseMontgomery971,777Verizon Maryland Inc
301-655BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-656Chevy ChaseMontgomery971,777Verizon Maryland Inc
301-657Chevy ChaseMontgomery971,777Verizon Maryland Inc
301-658-7Mc LeanMontgomery971,777Level 3 Communications LLC - MD
301-658-0WashingtonMontgomery971,777Teleport Communications America LLC - DC
301-659-0BeltsvilleCharles146,551New Cingular Wireless PCS LLC - DC
301-659-9WashingtonCharles146,551Sprint Spectrum LP
301-660-8HagerstownWashington147, CLEC LLC - MD
301-660-0MonroviaWashington147,430New Cingular Wireless PCS LLC - DC
301-661BeltsvilleMontgomery971,777New Cingular Wireless PCS LLC - DC
301-662FrederickFrederick233,385Verizon Maryland Inc
301-663FrederickFrederick233,385Verizon Maryland Inc
301-664Chevy ChaseMontgomery971,777Verizon Maryland Inc
301-665HagerstownWashington147,430Verizon Maryland Inc
301-666-6Chevy ChasePrince George's863,420Core Communications Inc - MD
301-666-7Glenn DalePrince George's863,420Qwest Communications Company LLC
301-666-0WashingtonPrince George's863,420Teleport Communications America LLC - DC
301-667MonroviaFrederick233,385New Cingular Wireless PCS LLC - DC
301-668FrederickFrederick233,385Verizon Maryland Inc
301-669SuitlandPrince George's863,420Verizon Maryland Inc
301-670GaithersburgMontgomery971,777Verizon Maryland Inc
301-671HagerstownWashington147,430New Frontiers Telecommunications Inc
301-672WashingtonSt. Mary's105,151Sprint Spectrum LP
301-673HagerstownFrederick233,385New Frontiers Telecommunications Inc
301-674BeltsvilleMontgomery971,777Sprint Spectrum LP
301-675BeltsvilleMontgomery971,777Omnipoint Communications Cap Operations LLC
301-676MonroviaFrederick233,385New Cingular Wireless PCS LLC - DC
301-677WashingtonPrince George's863,420Teleport Communications America LLC - DC
301-678-9HagerstownWashington147, CLEC LLC - MD
301-678-4MartinsburgWashington147,430Sprint Communications Company LP - MD
301-679-9BeltsvilleMontgomery971,777MetroPCS Inc
301-679-5WashingtonMontgomery971, CLEC LLC - MD
301-679-0WashingtonMontgomery971,777Teleport Communications America LLC - DC
301-680Silver SpringMontgomery971,777Verizon Maryland Inc
301-681Silver SpringMontgomery971,777Verizon Maryland Inc
301-682FrederickFrederick233,385Verizon Maryland Inc
301-683-9WashingtonPrince George's863, CLEC LLC - MD
301-684-2AlexandriaCharles146,551Comcast Phone of Northern Maryland Inc - MD
301-684-5Mc LeanCharles146,551Level 3 Communications LLC - MD
301-684-0WashingtonCharles146,551Teleport Communications America LLC - DC
301-685-3Chevy ChaseMontgomery971,777Paetec Communications Inc - MD
301-685-6Mc LeanMontgomery971,777Level 3 Communications LLC - MD
301-686-4BeltsvillePrince George's863,420Omnipoint Communications Cap Operations LLC
301-686-7WashingtonPrince George's863, CLEC LLC - MD
301-687-0FrostburgAllegany75,087Verizon Maryland Inc
301-688LaurelPrince George's863,420Verizon Maryland Inc
301-689-0FrostburgAllegany75,087Verizon Maryland Inc
301-690-5BeltsvilleSt. Mary's105,151New Cingular Wireless PCS LLC - DC
301-690-6WashingtonSt. Mary's105, CLEC LLC - MD
301-691-8Annapolis JunctionMontgomery971,777Cellco Partnership dba Verizon Wireless - MD
301-691-5Silver SpringMontgomery971,777Peerless Network of Maryland LLC
301-692-7KensingtonMontgomery971,777Qwest Communications Company LLC
301-693FrederickFrederick233,385Omnipoint Communications Cap Operations LLC
301-694FrederickFrederick233,385Verizon Maryland Inc
301-695FrederickFrederick233,385Verizon Maryland Inc
301-696FrederickFrederick233,385Verizon Maryland Inc
301-697MonroviaAllegany75,087New Cingular Wireless PCS LLC - DC
301-698FrederickFrederick233,385Verizon Maryland Inc
301-699HyattsvillePrince George's863,420Verizon Maryland Inc

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301 Area Code

At, you'll find current information on 301area code, including 301 area code location & map. Other phone area code may be searched using's area code locator service on the homepage. Use the phone number search function above to instant verify area code lookup & phone number lookup.

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Telephone/Landline Area Codes is a resource of North American telephone area codes. Beyond area code listings, relevant information about each area code is detailed. For example, this page details area code 301-6. You can also search area codes by state, and within the NANP, find country area codes.

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301 Area Code Reviews provides local reviews for phone numbers and aggregates results per area code. It shows you the area code location covered by each area code; for example, the LA area code reveiws covers local business phone numbers area in Los Angeles. This page details area code 301-6. All USA states area codes may be found using

Telephone Area Codes in Maryland

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External links & resources for area code 301 in Maryland

  • CitySites Pages for Maryland (Source: Official CitySites)
  • Wikipedia Article on Area Code 301 (Source: Wikipedia)
  • State Information Resources for Maryland (Source: State Information)