Area Code240

Maryland, United States

Eastern Time

1:23 AM

Area Code

240

State / Province

Maryland

Country

United States

Time Zone

Eastern Time

Cities and Communities Served

AshtonAshton (Baltimore Lata)BittingerBrandywineBrunswickBuckeystownClear SpringCumberlandDamascusDamascus (Hagerstown Lata)EmmitsburgFlintstoneFrederickFriendsvilleFrostburgGaithersburgGrantsvilleHagerstownHancockHighfieldHughesvilleIndian HeadKeedysvilleKitzmillerLa PlataLaurelLaurel (Baltimore Lata)LeonardtownLexington Park-Great MillsLonaconingMccooleMechanicsvilleMiddletownMount AiryMount SavageMyersvilleNanjemoyNew MarketOaklandPoolesvilleRidgeSmithsburgThurmontTompkinsvilleWaldorfWalkersvilleWashingtonWesternportWilliamsport

Area code 240 covers 49 cities and communities across Maryland, based on telephone company rate center data.

tel: Link Format

Use the E.164 format for clickable phone links (RFC 3966):

<a href="tel:+12405550100">+12405550100</a>
<a href="tel:+12405550199">+12405550199</a>
Full tel: URI guide
View all United States area codes on map →

Check a 240 Number

Look up which exchange in Maryland a specific 240 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.

Prefix Blocks (NPA-NXX)

785 active prefixes in this area code, assigned as 7,874 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.

Showing blocks 1–100 of 7,874

NPA-NXXBlockRate centreTypeCarrier (OCN)SwitchLATALIRDates
240-2000Washington Zone 2Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2001Washington Zone 2Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2002Washington Zone 2WirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)BELTSVILLE236——
240-2003Washington Zone 2Landline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2004Washington Zone 2Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2005Washington Zone 2Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2006Washington Zone 2Landline or VoIPYMAX COMMUNICATIONS CORP. - MD (281E)WASHINGTON236——
240-2007Washington Zone 2Landline or VoIPYMAX COMMUNICATIONS CORP. - MD (281E)WASHINGTON236——
240-2008Washington Zone 2Landline or VoIPYMAX COMMUNICATIONS CORP. - MD (281E)WASHINGTON236——
240-2009Washington Zone 2Landline or VoIPYMAX COMMUNICATIONS CORP. - MD (281E)WASHINGTON236——
240-200AWashington Zone 2Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2010RidgeLandline or VoIPTELNYX LLC (073H)WASHDC127MD236——
240-2011RidgeLandline or VoIPTELNYX LLC (073H)WASHDC127MD236——
240-2012RidgeLandline or VoIPONVOY, LLC - MD (876D)TYSONS CORNER236——
240-2013RidgeLandline or VoIPONVOY, LLC - MD (876D)TYSONS CORNER236——
240-2014RidgeLandline or VoIPONVOY, LLC - MD (876D)TYSONS CORNER236——
240-2015RidgeLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2016RidgeLandline or VoIPTELNYX LLC (073H)WASHDC127MD236——
240-2017RidgeLandline or VoIPONVOY, LLC - MD (876D)TYSONS CORNER236——
240-2018RidgeLandline or VoIPTELNYX LLC (073H)WASHDC127MD236——
240-2019RidgeLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-201ARidgeLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2021HighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2022HighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2023HighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2024HighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2025HighfieldWirelessONVOY SPECTRUM, LLC (624H)FRDRMDFRXPX240——
240-2026HighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2027HighfieldLandline or VoIPTERRA NOVA TELECOM INC. (145J)—240——
240-2028HighfieldWirelessONVOY SPECTRUM, LLC (624H)FRDRMDFRXPX240——
240-2029HighfieldWirelessONVOY SPECTRUM, LLC (624H)FRDRMDFRXPX240——
240-202AHighfieldLandline or VoIPONVOY, LLC - MD (876D)CMLDMDCMEMD240——
240-2030HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2031HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2032HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2033HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2034HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2035HagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2036HagerstownLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)HGTWMDHGDMD240——
240-2037HagerstownLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)HGTWMDHGDMD240——
240-2038HagerstownLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)HGTWMDHGDMD240——
240-2039HagerstownLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)HGTWMDHGDMD240——
240-203AHagerstownWirelessOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (6855)FRDRMDFRKMD240——
240-2040Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2041Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2042Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2043Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2044Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2045Washington Zone 2Landline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2046Washington Zone 2Landline or VoIPLEVEL 3 COMMUNICATIONS, LLC - MD (6119)MC LEAN236——
240-2047Washington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2048Washington Zone 2Landline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)SILVER SPRING236——
240-2049Washington Zone 2Landline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)SILVER SPRING236——
240-204AWashington Zone 2WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2050Washington Zone 10WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2051Washington Zone 10WirelessNEW CINGULAR WIRELESS PCS, LLC - DC (4036)CHCHMDBEWMD236——
240-2052Washington Zone 10WirelessNEW CINGULAR WIRELESS PCS, LLC - DC (4036)CHCHMDBEWMD236——
240-2053Washington Zone 10WirelessNEW CINGULAR WIRELESS PCS, LLC - DC (4036)CHCHMDBEWMD236——
240-2054Washington Zone 10WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2055Washington Zone 10WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2056Washington Zone 10WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-2057Washington Zone 10Landline or VoIPLEVEL 3 COMMUNICATIONS, LLC - MD (6119)MC LEAN236——
240-2058Washington Zone 10Landline or VoIPLEVEL 3 COMMUNICATIONS, LLC - MD (6119)MC LEAN236——
240-2059Washington Zone 10WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6395)WASKDCFNAMD236——
240-205AWashington Zone 10WirelessNEW CINGULAR WIRELESS PCS, LLC - DC (4036)CHCHMDBEWMD236——
240-2060Washington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2061Washington Zone 14Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2062Washington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2063Washington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2064Washington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2065Washington Zone 14Landline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2066Washington Zone 14Landline or VoIPLEVEL 3 COMMUNICATIONS, LLC - MD (6119)MC LEAN236——
240-2067Washington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2068Washington Zone 14Landline or VoIPCOMCAST IP PHONE, LLC (318J)ARTNVAARXDY236——
240-2069Washington Zone 14Landline or VoIPCOMCAST IP PHONE, LLC (318J)ARTNVAARXDY236——
240-206AWashington Zone 14Landline or VoIPMCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229)WASHINGTON236——
240-2070DamascusLandline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2071DamascusLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2072DamascusLandline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2073DamascusLandline or VoIPCOMCAST IP PHONE, LLC (318J)ARTNVAARXDY236——
240-2074DamascusLandline or VoIPLEVEL 3 COMMUNICATIONS, LLC - MD (6119)MC LEAN236——
240-2075DamascusLandline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2076DamascusLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-2077DamascusLandline or VoIPTELNYX LLC (073H)WASHDC127MD236——
240-2078DamascusWirelessONVOY SPECTRUM, LLC (624H)WASHDCSWMMD236——
240-2079DamascusLandline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-207ADamascusLandline or VoIPPAETEC ITEL, LLC (829J)WASHDCSWXZZ236——
240-2080La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2081La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2082La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2083La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2084La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2085La PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2087La PlataLandline or VoIPONVOY, LLC - MD (876D)TYSONS CORNER236——
240-2088La PlataLandline or VoIPBANDWIDTH.COM CLEC, LLC - MD (071F)WASHDCDP8MD236——
240-208ALa PlataLandline or VoIPPEERLESS NETWORK OF MARYLAND, LLC (568G)WASHINGTON236——
240-2090Indian HeadWirelessNEW CINGULAR WIRELESS PCS, LLC - DC (4036)CHCHMDBEWMD236——
240-2091Indian HeadWirelessBOOST SUBSCRIBERCO L.L.C. (490J)WASHDC12NMD236——
240-2092Indian HeadWirelessONVOY SPECTRUM, LLC (624H)WASHDCSWMMD236——
240-2093Indian HeadWirelessONVOY SPECTRUM, LLC (624H)WASHDCSWMMD236——

Search and page through all 7,874 blocks →

Area Code 240 Numbering Data

Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.

Assigned Prefixes

785

Assignment Blocks

7,874

Rate Centers

63

Carriers of Record

48

Line Types

TypeBlocksShare
Landline2673%
Landline or VoIP4,48657%
Wireless3,12140%

Carriers of Record

CarrierBlocks
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC1,363
ONVOY, LLC - MD975
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD754
NEW CINGULAR WIRELESS PCS, LLC - DC723
BANDWIDTH.COM CLEC, LLC - MD560
PAETEC ITEL, LLC403
LEVEL 3 COMMUNICATIONS, LLC - MD369
CORE COMMUNICATIONS, INC.- MD333
METROPCS, INC.320
MCIMETRO ACCESS TRANSMISSION SERVICES LLC318
38 other carriers1,756

Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.

Prefixes by Rate Center

Rate CenterPrefixesBlocks
Washington Zone 373673
Washington Zone 264634
Washington Zone 1054494
Frederick43443
Gaithersburg40400
Laurel39419
Hagerstown33353
Washington Zone 430320
Washington Zone 528298
Waldorf26276
Ashton25275
Washington Zone 1318188
Leonardtown17167
Washington Zone 1117177
Cumberland16166
Laurel (Baltimore LATA)16170
Washington Zone 1414152
Washington Zone 613133
Lexington Park-Great Mills12115
Myersville11111
Washington Zone 1611120
Washington Zone 1210110
Damascus977
Hughesville991
Brandywine874
La Plata876
Washington Zone 15886
Mechanicsville760
Indian Head666
Oakland656
Poolesville663
Ridge666
Tompkinsville658
Ashton (Baltimore LATA)553
Buckeystown548
Mount Airy545
Nanjemoy540
Damascus (Hagerstown LATA)435
Frostburg437
Hancock432
Highfield425
Middletown443
Washington Zone 13 (Baltimore LATA)441
Washington Zone 14 (Baltimore LATA)444
Clear Spring332
Emmitsburg323
Grantsville322
Keedysville333
McCoole321
New Market329
Smithsburg333
Thurmont333
Walkersville332
Williamsport327
Bittinger220
Brunswick222
Flintstone218
Friendsville222
Kitzmiller222
Lonaconing217
Mount Savage217
Washington Zone 15 (Baltimore LATA)222
Westernport219

A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.

LATAs
236, 238, 240
Incumbent Carrier
VERIZON MARYLAND, INC.

About Area Code 240

Area code 240 is a North American Numbering Plan (NANP) telephone area code assigned to Maryland, United States. It is one of 6 area codes serving Maryland. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.

Is 240 a valid area code?

Yes. 240 is an active North American Numbering Plan (NANP) area code, currently assigned to Maryland, United States. It is safe to answer or dial calls using this area code.

Where is area code 240?

Area code 240 covers 49 cities and communities in Maryland, including Ashton, Ashton (Baltimore Lata), Bittinger, Brandywine, Brunswick, and 44 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.

What time zone is area code 240?

All numbers in the 240 area code observe Eastern Time (IANA timezone: America/New_York). Eastern Time is UTC−5 in winter (EST) and UTC−4 in summer (EDT). When placing a call to a 240 number from a different time zone, check the current local time above to avoid calling outside of business hours.

How do I dial a 240 number?

From within Maryland, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 240 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 240 XXX XXXX. The country code for both the United States and Canada in NANP is +1.

Formatting 240 phone numbers

Format 240 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +12405550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.

Other Area Codes in Maryland

227301410443667