301 Area Code Prefixes Directory

If you know the complete number you’re looking up, please use the Phone Number Search above. Or to explore prefixes in different coverage areas, please use the tables below.

Bandwidth.com Clec
Carrier

Coverage Area
Cities: Indian Head

New Cingular Wireless PCS - DC
Carrier

Coverage Area
Counties: , Montgomery, Washington, Frederick, Garrett
Cities: Chevy Chase, Bethesda, Leonardtown, Waldorf, Oxon Hill, Hagerstown, Silver Spring, Frederick, Oakland, Myersville, Rockville, Keedysville, Cumberland

Verizon Maryland
Carrier

Coverage Area
Counties: , Frederick, Montgomery, Howard, Garrett, Charles, Washington, Allegany, Calvert, Carroll, Saint Marys, Baltimore City, Anne Arundel
Cities: Fort Washington, Edgewater, Laurel, Gaithersburg, Hyattsville, Beltsville, Rockville, Chevy Chase, Bowie, Greenbelt, Williamsport, Glen Echo, Frederick, Silver Spring, Temple Hills, Highfield, Bethesda, Bittinger, Nanjemoy, Damascus, Issue, Ashton, Glenn Dale, Mount Savage, Thurmont, Hughesville, Bryans Road, Mechanicsville, Myersville, Lanham, College Park, Columbia, Capitol Heights, Oakland, Patuxent River, Poolesville, Westernport, Middletown, Brandywine, Hollywood, Waldorf, Swanton, La Plata, Hagerstown, Suitland, Keedysville, Emmitsburg, Kitzmiller, Lonaconing, Leonardtown, Oldtown, Upper Marlboro, Oxon Hill, Landover, Clinton, New Market, Hancock, Frostburg, Cumberland, Lexington Park, Indian Head, Accident, Avenue, Mccoole, North Beach, Smithsburg, Mount Airy, Adamstown, Brunswick, Clear Spring, Walkersville, Ridge, Baltimore, Grantsville, Odenton, Kensington, Annapolis, Valley Lee

Usa Mobility Wireless
Carrier

Coverage Area
Counties: , Montgomery
Cities: Greenbelt, Chevy Chase, Waldorf, Bethesda, College Park

Sprint Spectrum
Carrier

Coverage Area
Counties: , Washington, Frederick, Montgomery, Prince Georges
Cities: Beltsville, Gaithersburg, Greenbelt, Hagerstown, Frederick, Capitol Heights, Waldorf, Myersville, Leonardtown, Tall Timbers, Bethesda, Mount Rainier

Cavalier Telephone Mid-atlantic
Carrier

Coverage Area
Counties: Montgomery,
Cities: Bethesda, Greenbelt, Rockville

Teleport Communications America - DC
Carrier

Coverage Area
Counties: , Prince Georges, Charles
Cities: Glenn Dale, Rockville, Mount Rainier, La Plata, Waldorf, Laurel, Gaithersburg, Sandy Spring, Indian Head, Damascus, Poolesville, Upper Marlboro, Brandywine

Mci Worldcom Communications
Carrier

Coverage Area
Counties: , Prince Georges, Frederick, Montgomery
Cities: Sandy Spring, Rockville, Laurel, Silver Spring, Hyattsville, Mount Rainier, Oxon Hill, College Park, Gaithersburg, Kensington, Frederick, Capitol Heights, Bethesda

Mcimetro Access Transmission Services LLC
Carrier

Coverage Area
Cities: Clinton, Brandywine, Upper Marlboro, Hyattsville, Sandy Spring, Gaithersburg, Laurel, Silver Spring

Telcove Operations
Carrier

Coverage Area
Cities: Rockville

Uscoc Of Cumberland DBA United States Cel Md
Carrier

Coverage Area
Counties: , Washington, Garrett
Cities: Cumberland, Hagerstown, Oakland

Comcast Phone Of Northern Maryland
Carrier

Coverage Area
Counties: Frederick, , Prince Georges
Cities: Frederick, Upper Marlboro, Silver Spring, Laurel, Glenn Dale, Mount Rainier, College Park, Oxon Hill, Brunswick

Paetec Communications
Carrier

Coverage Area
Cities: Hyattsville, Silver Spring, Gaithersburg

Tw Telecom Of Maryland LLC
Carrier

Coverage Area
Counties: , Prince Georges
Cities: Laurel, Mount Rainier

Omnipoint Communications Cap Operations
Carrier

Coverage Area
Counties: , Frederick
Cities: Silver Spring, Frederick

Idt America Corp
Carrier

Coverage Area
Cities: Cumberland, Leonardtown

Vdl DBA Global Telecom Brokers
Carrier

Coverage Area
Cities: Laurel

Level 3 Communications
Carrier

Coverage Area
Counties: , Carroll, Montgomery
Cities: Upper Marlboro, Damascus, Rockville, Mount Airy, Waldorf, Laurel, Bethesda, Kensington, Cabin John, Glenn Dale, Oxon Hill, Cumberland, Tall Timbers

Xo Maryland
Carrier

Coverage Area
Cities: Chevy Chase

Quantum Telecommunications
Carrier

Coverage Area
Cities: Gaithersburg

Starpower Communications
Carrier

Coverage Area
Counties: , Montgomery
Cities: Hyattsville, Bethesda, Rockville, Silver Spring, Oxon Hill, Laurel

Ymax Communications Corp.
Carrier

Coverage Area
Cities: Indian Head

Baltimore-washington Telephone (bwt)
Carrier

Coverage Area
Counties: , Montgomery
Cities: Kensington, Silver Spring, Capitol Heights, Bethesda

Broadwing Communications. LLC
Carrier

Coverage Area
Counties: Prince Georges
Cities: Mount Rainier

Us Lec Of Maryland
Carrier

Coverage Area
Cities: Laurel

New Frontiers Telecommunications
Carrier

Coverage Area
Counties: , Washington, Frederick, Allegany, Garrett
Cities: Hancock, Myersville, Hagerstown, Frederick, Frostburg, Cumberland, Oakland

Teleport Communications America
Carrier

Coverage Area
Cities: Sandy Spring

Metro PCS
Carrier

Coverage Area
Cities: Greenbelt

Core Communications
Carrier

Coverage Area
Cities: Friendsville, Keedysville, Clear Spring, New Market

Core Communications - PA
Carrier

Coverage Area
Cities: Hyattsville

Virginia PCS Alliance, L.c.
Carrier

Coverage Area
Counties: Washington
Cities: Hagerstown

AT&T Local
Carrier

Coverage Area
Counties: , Prince Georges, Montgomery
Cities: Monrovia, Gaithersburg, Laurel, Mount Rainier, Rockville, Bethesda, Silver Spring

Mountain Communications DBA Procom
Carrier

Coverage Area
Cities: Mc Henry

The 301 area code is located in Baltimore, Maryland including Indian Head, Chevy Chase and was originally put into service on February 4th 1994. Find whose number this is.

Recently Reported Numbers

(301) 640-5011Neutral

Calls incessantly, three times a day. Never leaves a message. After I blocked the number, I noticed the call is still recorded by my iPhone in the blocked numbers file. Why, if it’s blocked?

(301) 234-8131Dangerous

caller says they are calling to collect on a hospital bill for $69. I haven't been to any hospitals nor did they have my correct address, but they did know my birthday.

(301) 368-8910Unknown

Called my unpublished home number.

(301) 798-6843Unknown

Who owns the number?

(301) 900-6140Unknown

Called me last night.

(301) 850-4313Unknown

Called two times today. No message left.

(301) 761-7549Dangerous

Credit Card Interest Rate Reduction scammers are getting really brazen. This one spoofed an office number at the National Institute of Allergies and Infectious Diseases. And I thought Tony was calling me for advice.

(301) 771-0652Unknown

Got a call from 301-771-0652. Any idea who it is?

(301) 834-1899Dangerous

Call supposedly from this number to my cell, which flagged it as spam. I didn't answer but they left a partial message about vehicle warranty. Also left the # 844-989-1708. Blocked & reported to the FCC & FTC.

(301) 868-1855Unknown

I keep getting calls from this number, no answer and no message.

Recently Searched Numbers

No additional information reported for these searched numbers. Received a call from any phone number listed below? Please consider helping the community by reporting your experience.

301-281-5420
Report
Mci Worldcom Communications
301-409-4463
Report
Usa Mobility Wireless
301-519-4327
Report
Verizon Maryland
301-182-4320
Report
UNKNOWN
301-486-6029
Report
Verizon Maryland
301-884-8368
Report
Verizon Maryland
301-406-7429
Report
Usa Mobility Wireless
301-381-4639
Report
UNKNOWN
301-547-3647
Report
Teleport Communications America - DC
301-727-6032
Report
Baltimore-washington Telephone (bwt)
301-255-4822
Report
Verizon Maryland
301-517-3431
Report
Verizon Maryland
301-359-6332
Report
Verizon Maryland
301-601-1500
Report
Verizon Maryland
301-634-6531
Report
Teleport Communications America - DC
301-657-9678
Report
Verizon Maryland
301-810-9754
Report
AT&T Local
301-821-9126
Report
AT&T Local
301-599-8298
Report
Verizon Maryland

Most searched numbers

Cell
All TimeThis Month
301-768-4896First seen 2010-08-04301-932-5681First seen 2014-12-15
301-943-1663First seen 2011-12-14301-748-4222First seen 2012-09-17
301-876-1085First seen 2012-02-29301-976-1496First seen 2015-08-13
301-593-4140First seen 2015-08-05301-108-9677First seen 2016-02-18
301-603-6646First seen 2015-09-12301-380-6831First seen 2017-09-15
Landline
All TimeThis Month
301-909-3665First seen 2019-04-12301-372-9134First seen 2015-08-09
301-373-6048First seen 2014-07-22301-250-6733First seen 2015-06-05
301-923-5817First seen 2011-06-12301-654-6421First seen 2016-03-17
301-857-6576First seen 2017-12-21301-362-5167First seen 2015-08-20
301-808-7452First seen 2012-02-13301-401-3211First seen 2011-07-23

Cities With coverage

CITY LIST
Accident
Adamstown
Annapolis
Ashton
Avenue
Baltimore
Beltsville
Bethesda
Bittinger
Bowie
Brandywine
Brunswick
Bryans Road
Cabin John
Capitol Heights
Chevy Chase
Clear Spring
Clinton
College Park
Columbia
Cumberland
Damascus
Edgewater
Emmitsburg
Fort Washington
Frederick
Friendsville
Frostburg
Gaithersburg
Glen Echo
Glenn Dale
Grantsville
Greenbelt
Hagerstown
Hancock
Highfield
Hollywood
Hughesville
Hyattsville
Indian Head
Issue
Keedysville
Kensington
Kitzmiller
La Plata
Landover
Lanham
Laurel
Leonardtown
Lexington Park
Lonaconing
Mc Henry
Mccoole
Mechanicsville
Middletown
Monrovia
Mount Airy
Mount Rainier
Mount Savage
Myersville
Nanjemoy
New Market
North Beach
Oakland
Odenton
Oldtown
Oxon Hill
Patuxent River
Poolesville
Ridge
Rockville
Sandy Spring
Silver Spring
Smithsburg
Suitland
Swanton
Tall Timbers
Temple Hills
Thurmont
Upper Marlboro
Valley Lee
Waldorf
Walkersville
Westernport
Williamsport