1. Area Code Lookup
  2. Area code 240

Area Code 240 Information and Location Details

The 240 area code is located in Baltimore, Maryland including Mount Rainier, Ridge and was originally put into service on February 27th 1999. Find whose number this is.

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Country

United States of America

State

Maryland

Largest City

Baltimore

Timezone

Eastern

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240 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
Counties: Prince Georges, Washington,
Cities: Mount Rainier, Hagerstown, Rockville, Crofton

(240) 200
(240) 347
(240) 428
(240) 509
(240) 630
(240) 734

Peerless Network Of The District Of Columbia, Dc
Carrier

Coverage Area
Counties: Saint Marys, Charles,
Cities: Ridge, La Plata, Indian Head, Waldorf, Mechanicsville, Nanjemoy

(240) 201
(240) 208
(240) 209
(240) 213
(240) 214
(240) 218

Sprint Spectrum
Carrier

Coverage Area
Counties: Washington, , Montgomery, Prince Georges, Frederick
Cities: Hagerstown, Waldorf, Callaway, Bethesda, Mount Rainier, Beltsville, Chevy Chase, Cabin John, Frederick, Gaithersburg, Capitol Heights, Tall Timbers, Silver Spring, Cumberland

(240) 203
(240) 216
(240) 262
(240) 263
(240) 265
(240) 272
(240) 277
(240) 286
(240) 299
(240) 304
(240) 305
(240) 316
(240) 330
(240) 340
(240) 346
(240) 350
(240) 351
(240) 353
(240) 354
(240) 355
(240) 367
(240) 370
(240) 372
(240) 375
(240) 388
(240) 398
(240) 400
(240) 412
(240) 417
(240) 418
(240) 424
(240) 426
(240) 431
(240) 432
(240) 438
(240) 445
(240) 448
(240) 462
(240) 464
(240) 468
(240) 469
(240) 480
(240) 498
(240) 501
(240) 502
(240) 504
(240) 508
(240) 513
(240) 518
(240) 519
(240) 520
(240) 522
(240) 541
(240) 543
(240) 580
(240) 600
(240) 601
(240) 602
(240) 603
(240) 604
(240) 605
(240) 606
(240) 625
(240) 626
(240) 671
(240) 674
(240) 793
(240) 832
(240) 848
(240) 855
(240) 876
(240) 882
(240) 988

Cellco Partnership DBA Verizon Wireless
Carrier

Coverage Area
Counties: Montgomery, , Prince Georges, Frederick, Howard
Cities: Bethesda, Gaithersburg, Mount Rainier, Waldorf, Laurel, Frederick, Leonardtown, Columbia, Silver Spring, Hancock, Cabin John, Oxon Hill, Chevy Chase, Rockville

(240) 204
(240) 224
(240) 234
(240) 270
(240) 278
(240) 285
(240) 298
(240) 300
(240) 309
(240) 319
(240) 338
(240) 343
(240) 357
(240) 380
(240) 393
(240) 397
(240) 419
(240) 429
(240) 435
(240) 439
(240) 444
(240) 446
(240) 457
(240) 458
(240) 459
(240) 470
(240) 479
(240) 495
(240) 507
(240) 532
(240) 561
(240) 577
(240) 578
(240) 585
(240) 587
(240) 595
(240) 672
(240) 676
(240) 678
(240) 687
(240) 688
(240) 712
(240) 723
(240) 762
(240) 772
(240) 801
(240) 839
(240) 925
(240) 994
(240) 997

New Cingular Wireless PCS - DC
Carrier

Coverage Area
Counties: , Montgomery, Washington, Frederick, Carroll
Cities: Cabin John, Waldorf, Bethesda, Hagerstown, Damascus, Frederick, Silver Spring, Chevy Chase, Mount Airy, Rockville, Gaithersburg, Mechanicsville, Myersville, Cumberland

(240) 205
(240) 210
(240) 271
(240) 274
(240) 281
(240) 291
(240) 308
(240) 344
(240) 381
(240) 383
(240) 394
(240) 401
(240) 409
(240) 416
(240) 447
(240) 449
(240) 460
(240) 461
(240) 463
(240) 466
(240) 472
(240) 475
(240) 478
(240) 506
(240) 515
(240) 535
(240) 654
(240) 675
(240) 707
(240) 727
(240) 731
(240) 750
(240) 803
(240) 888
(240) 893

Xo Maryland
Carrier

Coverage Area
Counties: , Charles, Saint Marys
Cities: Glenn Dale, Laurel, Chevy Chase, Gaithersburg, Waldorf, Sandy Spring, Poolesville, Upper Marlboro, La Plata, Leonardtown, Mechanicsville, Callaway, Damascus, Newburg, Brandywine, Hughesville, Ridge, Clinton, Nanjemoy, Indian Head

(240) 206
(240) 294
(240) 399
(240) 404
(240) 427
(240) 437
(240) 489
(240) 510
(240) 523
(240) 538
(240) 560
(240) 644
(240) 645
(240) 652
(240) 718
(240) 745
(240) 764
(240) 765
(240) 766
(240) 778
(240) 804
(240) 823
(240) 833
(240) 837
(240) 844
(240) 845
(240) 846
(240) 986
(240) 993

Cavalier East LLC
Carrier

Coverage Area
Counties: , Prince Georges
Cities: Damascus, Waldorf, Mount Rainier, Upper Marlboro, Gaithersburg, Chevy Chase, Laurel, Capitol Heights, Sandy Spring, Rockville

(240) 207
(240) 320
(240) 333
(240) 339
(240) 364
(240) 387
(240) 494
(240) 646
(240) 724
(240) 737
(240) 747
(240) 767
(240) 779
(240) 864
(240) 868
(240) 929
(240) 949

Core Communications
Carrier

Coverage Area
Counties: Garrett, Frederick, Washington, , Montgomery, Carroll
Cities: Oakland, Frederick, Hagerstown, Leonardtown, Highfield, Grantsville, Waldorf, Hancock, Mccoole, Emmitsburg, Damascus, Gaithersburg, Bethesda, Mount Airy, Cumberland, College Park, Chevy Chase

(240) 212
(240) 225
(240) 231
(240) 239
(240) 251
(240) 275
(240) 279
(240) 287
(240) 322
(240) 323
(240) 325
(240) 327
(240) 336
(240) 369
(240) 378
(240) 512
(240) 800

Telcove Operations
Carrier

Coverage Area
Counties: Frederick, , Montgomery
Cities: Frederick, Ijamsville, Gaithersburg, Bethesda, Rockville

(240) 215
(240) 436
(240) 751
(240) 752
(240) 753

Omnipoint Communications Cap Operations
Carrier

Coverage Area
Counties: Washington, , Frederick, Prince Georges, Montgomery
Cities: Hagerstown, Laurel, Hyattsville, Rockville, Frederick, Silver Spring, Oxon Hill, Glenn Dale, Middletown, Mount Rainier, Myersville, Bethesda, Ashton

(240) 217
(240) 360
(240) 413
(240) 421
(240) 422
(240) 423
(240) 441
(240) 476
(240) 481
(240) 486
(240) 490
(240) 505
(240) 565
(240) 593
(240) 643
(240) 716
(240) 784
(240) 838
(240) 899
(240) 938

Peerless Network Of Maryland
Carrier

Coverage Area
Counties: , Saint Marys, Prince Georges, Charles
Cities: Poolesville, Ridge, Brandywine, Mount Rainier, Mechanicsville, Newburg, La Plata, Damascus, Indian Head, Waldorf, Hughesville, Callaway, Laurel, Upper Marlboro, Leonardtown, Sandy Spring, Gaithersburg

(240) 220
(240) 248
(240) 250
(240) 255
(240) 266
(240) 269
(240) 282
(240) 331
(240) 332
(240) 337
(240) 352
(240) 358
(240) 359
(240) 368
(240) 371
(240) 376
(240) 384
(240) 414
(240) 465
(240) 503
(240) 524
(240) 525
(240) 526
(240) 536
(240) 539
(240) 597
(240) 713
(240) 757

Verizon Maryland
Carrier

Coverage Area
Counties: , Frederick, Washington, Anne Arundel, Garrett
Cities: Rockville, Laurel, Frederick, Beltsville, Kensington, Hagerstown, Clinton, Cumberland, Odenton, Myersville, Gaithersburg, Oakland, Chevy Chase, Hyattsville, Greenbelt, Silver Spring, Temple Hills, Adamstown, Lexington Park, Smithsburg

(240) 221
(240) 228
(240) 236
(240) 264
(240) 276
(240) 292
(240) 313
(240) 314
(240) 315
(240) 318
(240) 328
(240) 362
(240) 373
(240) 379
(240) 385
(240) 386
(240) 420
(240) 442
(240) 453
(240) 456
(240) 497
(240) 527
(240) 529
(240) 566
(240) 567
(240) 568
(240) 582
(240) 583
(240) 586
(240) 624
(240) 629
(240) 631
(240) 632
(240) 662
(240) 683
(240) 684
(240) 686
(240) 694
(240) 695
(240) 699
(240) 725
(240) 773
(240) 777
(240) 818
(240) 826
(240) 895
(240) 964

Cavalier Telephone Mid-atlantic
Carrier

Coverage Area
Counties: , Montgomery
Cities: Waldorf, Oxon Hill, Laurel, Hyattsville, Clinton, Capitol Heights, Upper Marlboro, Glenn Dale, Gaithersburg, Sandy Spring, Bethesda, Rockville, Kensington, Silver Spring, College Park

(240) 222
(240) 289
(240) 295
(240) 296
(240) 303
(240) 312
(240) 326
(240) 335
(240) 361
(240) 390
(240) 395
(240) 403
(240) 430
(240) 433
(240) 450
(240) 473
(240) 558

Allegiance Telecom
Carrier

Coverage Area
Counties: Prince Georges,
Cities: Mount Rainier, Gaithersburg, Rockville, Laurel, Sandy Spring, Glenn Dale, College Park

(240) 223
(240) 243
(240) 247
(240) 260
(240) 268
(240) 290
(240) 306
(240) 548
(240) 553
(240) 554
(240) 559
(240) 841
(240) 842
(240) 843

Broadwing Communications. LLC
Carrier

Coverage Area
Counties: , Prince Georges, Charles
Cities: Waldorf, Mount Rainier, Leonardtown, Hughesville, Rockville, La Plata, Gaithersburg, Laurel, Brandywine, Oxon Hill, Callaway, Chevy Chase, Sandy Spring, Upper Marlboro

(240) 229
(240) 232
(240) 273
(240) 434
(240) 528
(240) 599
(240) 638
(240) 744
(240) 776
(240) 780
(240) 786
(240) 787
(240) 788
(240) 790
(240) 794
(240) 880
(240) 883
(240) 892
(240) 897
(240) 898

Global Crossing Local Services-md
Carrier

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

(240) 230
(240) 253
(240) 334
(240) 349
(240) 374
(240) 377
(240) 391
(240) 396
(240) 407
(240) 471
(240) 491
(240) 573
(240) 607
(240) 627
(240) 667
(240) 685
(240) 691
(240) 715
(240) 720
(240) 722
(240) 782
(240) 812

Teleport Communications America - DC
Carrier

Coverage Area
Counties: , Saint Marys, Prince Georges
Cities: Newburg, Callaway, Mechanicsville, Hughesville, Leonardtown, Nanjemoy, Ridge, Mount Rainier

(240) 233
(240) 237
(240) 249
(240) 254
(240) 256
(240) 257
(240) 258
(240) 533

Paetec Communications
Carrier

Coverage Area
Counties: Montgomery,
Cities: Bethesda, Rockville, Kensington, Gaithersburg, Oxon Hill, Glenn Dale, College Park

(240) 235
(240) 238
(240) 283
(240) 454
(240) 455
(240) 556
(240) 965

Starpower Communications
Carrier

Coverage Area
Counties: , Prince Georges
Cities: Chevy Chase, Kensington, Mount Rainier, Glenn Dale, Gaithersburg, Callaway, Sandy Spring, Oxon Hill, Damascus, Waldorf

(240) 241
(240) 242
(240) 244
(240) 245
(240) 246
(240) 293
(240) 317
(240) 342
(240) 392
(240) 668
(240) 682

Level 3 Communications
Carrier

Coverage Area
Counties: , Allegany, Washington, Frederick, Howard, Baltimore City
Cities: Gaithersburg, Frostburg, College Park, Hagerstown, Sandy Spring, Oxon Hill, Frederick, Laurel, Hyattsville, Columbia, Waldorf, Baltimore, Cumberland

(240) 252
(240) 284
(240) 297
(240) 329
(240) 345
(240) 348
(240) 356
(240) 547
(240) 575
(240) 696
(240) 708
(240) 754
(240) 865
(240) 920
(240) 979

Comcast Phone Of Northern Maryland
Carrier

Coverage Area
Cities: Laurel, Thurmont, Oxon Hill, Kensington, Indian Head

(240) 280
(240) 288
(240) 467
(240) 483
(240) 669
(240) 755
(240) 770
(240) 903

AT&T Local
Carrier

Coverage Area
Cities: Emmitsburg, Williamsport

(240) 307
(240) 366

Uscoc Of Cumberland DBA United States Cel Md
Carrier

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

(240) 310
(240) 321

Ymax Communications Corp.
Carrier

Coverage Area
Counties: , Frederick
Cities: Clarksville, Frederick

(240) 324
(240) 415

Mci Worldcom Communications
Carrier

Coverage Area
Cities: Adamstown, College Park, Chevy Chase, Rockville, Kensington

(240) 341
(240) 402
(240) 616
(240) 619
(240) 620
(240) 621

Global Naps South
Carrier

Coverage Area
Cities: Kensington

(240) 363

Baltimore-washington Telephone (bwt)
Carrier

Coverage Area
Cities: Damascus

(240) 365

Teleport Communications America
Carrier

Coverage Area
Counties: Washington
Cities: Hagerstown

(240) 382

Atx Telecommunications Services, Ltd
Carrier

Coverage Area
Cities: Sandy Spring, Gaithersburg

(240) 389
(240) 813

Us Lec Of Maryland
Carrier

Coverage Area
Counties: Frederick, , Washington
Cities: Frederick, Cabin John, Hyattsville, Capitol Heights, Oxon Hill, Hagerstown, Silver Spring, College Park, Glenn Dale, Upper Marlboro, Clinton, Gaithersburg

(240) 405
(240) 482
(240) 485
(240) 487
(240) 492
(240) 493
(240) 499
(240) 500
(240) 514
(240) 516
(240) 542
(240) 544
(240) 545
(240) 546
(240) 613
(240) 912

Leap Wireless Intl DBA Cricket Comm
Carrier

Coverage Area
Counties: , Frederick, Prince Georges
Cities: Rockville, Frederick, Waldorf, Silver Spring, Mount Rainier, Chevy Chase

(240) 406
(240) 408
(240) 440
(240) 550
(240) 551
(240) 552
(240) 640
(240) 701
(240) 704
(240) 705
(240) 706

Dslnet Communications Va
Carrier

Coverage Area
Cities: Cabin John

(240) 425

Lumos Networks Inc. - VA
Carrier

Coverage Area
Counties: Washington
Cities: Hagerstown

(240) 452

Lightwave Communications
Carrier

Coverage Area
Cities: Gaithersburg, Silver Spring

(240) 477
(240) 821

Shentel Communications
Carrier

Coverage Area
Counties: Garrett
Cities: Oakland

(240) 488

Local Access LLC
Carrier

Coverage Area
Counties: , Prince Georges
Cities: Waldorf, Mount Rainier, Oxon Hill

(240) 530
(240) 670
(240) 743

Paetec Communications - DC
Carrier

Coverage Area
Cities: Laurel

(240) 581

365 Wireless
Carrier

Coverage Area
Counties: Frederick, Montgomery
Cities: Frederick, Bethesda

(240) 608
(240) 802

Tw Telecom Of Maryland LLC
Carrier

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

(240) 612
(240) 857
(240) 863

Metro PCS
Carrier

Coverage Area
Cities: Rockville, Hyattsville

(240) 614
(240) 615

Broadvox-clec - DC
Carrier

Coverage Area
Cities: Cabin John

(240) 650

Halo Wireless Services
Carrier

Coverage Area
Counties: Frederick
Cities: Frederick

(240) 651

Mte DBA Mte Paging Network
Carrier

Coverage Area
Counties: Montgomery
Cities: Bethesda

(240) 783
The 240 area code is located in Baltimore, Maryland including Mount Rainier, Ridge and was originally put into service on February 27th 1999. Find whose number this is.

Recently Reported Numbers

(240) 830-0062Unknown

Reatedly calls

(240) 830-0004Unknown

Called 3 times so farNever leaves a message

(240) 287-6356Unknown

Got a phone call from this number. The caller did not leave any message.

(240) 830-9381Unknown

Unknown caller. I don't answer any numbers I don't know.

(240) 301-2300Unknown

Yet another spam/scam/scum caller that never leaves a message.

(240) 496-7443Unknown

This number is from a very shaddy company call Freedom LRS, they call telling you that they are calleing from US department from education and tell you that to acess your account you need to give them a code that they will send to you email they already asked you at the beginning of the call. Once you give them the code they tell you all your student loan information like they know it. then they

(240) 496-7443Unknown

You do realize that they accessed your FSA account and that now they have all the information that is on there as well as your SS# don't you?

(240) 281-9758Unknown

Assumed it was some sort of phishing scam. They said you called me. They were about to start talking and then hung up. The number has hits on google and comes up as SCAM likely.

(240) 274-4648Unknown

Did not pick up, they left no message.

(240) 617-2640Unknown

Anyone knows who calls from this phone number?

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.

240-959-4574
ReportUNKNOWN
240-175-3582
ReportUNKNOWN
240-971-8606
ReportUNKNOWN
240-905-4295
ReportUNKNOWN
240-201-7198
ReportPeerless Network Of The District Of Columbia, Dc
240-731-8719
ReportNew Cingular Wireless PCS - DC
240-823-1006
ReportXo Maryland
240-896-1583
ReportUNKNOWN
240-107-1234
ReportUNKNOWN
240-776-8466
ReportBroadwing Communications. LLC
240-963-9206
ReportUNKNOWN
240-928-2034
ReportUNKNOWN
240-375-2774
ReportSprint Spectrum
240-387-6613
ReportCavalier East LLC
240-712-7009
ReportCellco Partnership DBA Verizon Wireless
240-430-9067
ReportCavalier Telephone Mid-atlantic
240-492-5707
ReportUs Lec Of Maryland
240-774-2146
ReportUNKNOWN

Most searched numbers

Cell
All TimeThis Month
240-892-9300First seen 2021-11-21240-288-4482First seen 2012-05-24
240-505-5534First seen 2020-09-15240-770-8562First seen 2018-11-02
240-280-1912First seen 2018-01-20240-510-2778First seen 2019-05-10
240-630-6704First seen 2016-12-26240-970-1785First seen 2010-08-16
240-457-5342First seen 2016-11-13240-397-1173First seen 2025-01-02
Landline
All TimeThis Month
240-935-8094First seen 2025-01-24240-476-1902First seen 2015-12-07
240-580-5104First seen 2018-07-04240-810-1761First seen 2017-02-14
240-777-5556First seen 2013-01-26240-576-4271First seen 2010-08-28
240-947-4649First seen 2015-10-28240-646-9144First seen 2025-10-20
240-380-7644First seen 2011-11-04240-922-5850First seen 2011-04-19

Cities With coverage

CITY LIST
Adamstown
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Baltimore
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Clarksville
Clinton
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Columbia
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Cumberland
Damascus
Emmitsburg
Frederick
Frostburg
Gaithersburg
Glenn Dale
Grantsville
Greenbelt
Hagerstown
Hancock
Highfield
Hughesville
Hyattsville
Ijamsville
Indian Head
Kensington
La Plata
Laurel
Leonardtown
Lexington Park
Mccoole
Mechanicsville
Middletown
Mount Airy
Mount Rainier
Myersville
Nanjemoy
Newburg
Oakland
Odenton
Oxon Hill
Poolesville
Ridge
Rockville
Sandy Spring
Silver Spring
Smithsburg
Tall Timbers
Temple Hills
Thurmont
Upper Marlboro
Waldorf
Williamsport