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Area code 240

Area code 240 serves Maryland, including Washington Zone 03, Washington Zone 02 and Washington Zone 10 (Eastern time). It has been in service since June 1, 1997 and shares its area with 227 and 301.

Numbers starting with 240 drew 1,563 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 990 complaints to the FCC since November 2023. The number on your screen can be faked, so a 240 number proves nothing about where a call came from.

Location
MarylandBaltimore-Columbia-Towson, MD Metropolitan Statistical Area and Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area
Time zone
Eastern
In service since
June 1, 1997Created from 301
Overlay
Same area as 227, 301
Local calls
Dial 10 digitsArea code needed, even next door
Exchanges in use
785 of 792held by 43 carriers
Projected to run out
3Q 2043NANPA forecast 2026.2

Complaints about 240 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 240. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

1,563

FCC complaints since November 2023

990

Different 240 numbers reported

2,277

FCC complaints naming a 240 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 202321
December 202330
January 202441
February 202418
March 202426
April 202425
May 202458
June 202431
July 202455
August 202441
September 202437
October 202438
November 202426
December 202423
January 202529
February 202519
March 202523
April 202517
May 202526
June 202520
July 202523
August 202516
September 202514
October 20251
November 20257
December 202516
January 202615
February 202613
March 202619
April 202626
May 202612
June 202623
July 202646
August 202638
September 202638
October 202651

What people said 240 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 886 of 1,563 reports were robocalls.

Show as a table
SubjectReports
Other648
Reducing your debt (credit cards, mortgage, student loans)262
Calls pretending to be government, businesses, or family and friends205
Dropped call or no message168
Home improvement and cleaning59
Medical and prescriptions44

Most reported 240 numbers

Numbers with at least five reports from three or more places in the last twelve months. Many of them are likely spoofed.

Places served by 240

NANPA lists 63 rate centers for 240. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Washington Zone 0373
  • Washington Zone 0264
  • Washington Zone 1054
  • Frederick43
  • Gaithersburg40
  • Laurel 23639
  • Hagerstown33
  • Washington Zone 0430
  • Washington Zone 0528
  • Waldorf26
  • Ashton 23625
  • Washington 236 Zone 1318
  • Leonardtown17
  • Washington Zone 1117
  • Cumberland16
  • Laurel 23816
  • Washington 236 Zone 1414
  • Washington Zone 0613
  • Lexington Park Great Mills12
  • Myersville11
  • Washington Zone 1611
  • Washington Zone 1210
  • Damascus 2369
  • Hughesville9
Show all 63 rate centers

Brandywine, La Plata, Washington 236 Zone 15, Mechanicsville, Indian Head, Oakland, Poolesville, Ridge, Tompkinsville, Ashton 238, Buckeystown, Mount Airy, Nanjemoy, Damascus 240, Frostburg, Hancock, Highfield, Middletown, Washington 238 Zone 13, Washington 238 Zone 14, Clear Spring, Emmitsburg, Grantsville, Keedysville, Mccoole, New Market, Smithsburg, Thurmont, Walkersville, Williamsport, Bittinger, Brunswick, Flintstone, Friendsville, Kitzmiller, Lonaconing, Mount Savage, Washington 238 Zone 15, Westernport.

Phone companies holding 240 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 93% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 8 of 43 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Omnipoint Communications Cap Operations, LLC119
Cellco Partnership dba Verizon Wireless - MD85
New Cingular Wireless PCS, LLC - DC69
Paetec Itel, LLC63
Level 3 Communications, LLC - MD59
Onvoy, LLC - MD56
Verizon Maryland, Inc.48
Mcimetro Access Transmission Services LLC46

When today's 240 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
200154
200212
20033
20047
20056
200614
20078
200812
200916
20108
201125
201210
201312
20147
201526
201634
201713
201826
201918
202026
202154
202239
202313

Check a 240 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in Maryland

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show