Maryland Phone Prefixes in 240-4XX Area Code

Phone Prefixes in the 240-4XX Area Code

Prefix Usage Primary City
(240) 481 Wireless Silver Spring
(240) 495 Wireless Mount Rainier
(240) 419 Wireless Waldorf
(240) 467 Landline Oxon Hill
(240) 454 Wireless Gaithersburg
(240) 459 Wireless Laurel
(240) 462 Wireless Beltsville
(240) 480 Wireless Bethesda
(240) 473 Landline College Park
(240) 498 Wireless Beltsville
(240) 440 Wireless Frederick
(240) 479 Wireless Oxon Hill
(240) 470 Wireless Laurel
(240) 450 Landline Silver Spring
(240) 461 Wireless Silver Spring
(240) 458 Wireless Waldorf
(240) 453 Landline Rockville
(240) 468 Wireless Mount Rainier
(240) 432 Wireless Beltsville
(240) 441 Wireless Oxon Hill
(240) 483 Landline Oxon Hill
(240) 433 Landline Silver Spring
(240) 487 Landline Hyattsville
(240) 497 Landline Chevy Chase
(240) 408 Wireless Rockville
(240) 402 Landline College Park
(240) 416 Wireless Waldorf
(240) 425 Landline Cabin John
(240) 446 Wireless Frederick
(240) 476 Wireless Silver Spring
(240) 426 Wireless Bethesda
(240) 424 Wireless Mount Rainier
(240) 466 Wireless Mechanicsville
(240) 477 Landline Gaithersburg
(240) 438 Wireless Silver Spring
(240) 447 Wireless Rockville
(240) 493 Landline Oxon Hill
(240) 420 Landline Hagerstown
(240) 405 Landline Frederick
(240) 485 Landline Cabin John
(240) 439 Wireless Frederick
(240) 434 Landline Leonardtown
(240) 471 Landline Silver Spring
(240) 423 Wireless Silver Spring
(240) 404 Landline Gaithersburg
(240) 464 Landline Chevy Chase
Prefix Usage Primary City
(240) 436 Landline Ijamsville
(240) 486 Wireless Glenn Dale
(240) 489 Landline Poolesville
(240) 401 Wireless Rockville
(240) 414 Landline Mount Rainier
(240) 417 Wireless Capitol Heights
(240) 465 Landline Mount Rainier
(240) 435 Wireless Waldorf
(240) 456 Landline Laurel
(240) 431 Wireless Tall Timbers
(240) 457 Wireless Frederick
(240) 415 Landline Frederick
(240) 444 Wireless Laurel
(240) 449 Wireless Gaithersburg
(240) 406 Wireless Rockville
(240) 428 Landline Rockville
(240) 494 Landline Mount Rainier
(240) 442 Landline Oakland
(240) 403 Landline Rockville
(240) 488 Landline Oakland
(240) 490 Wireless Middletown
(240) 413 Wireless Hyattsville
(240) 427 Landline Waldorf
(240) 475 Wireless Silver Spring
(240) 492 Landline Capitol Heights
(240) 469 Wireless Hagerstown
(240) 455 Landline Oxon Hill
(240) 409 Wireless Frederick
(240) 491 Landline Mount Rainier
(240) 499 Landline Cabin John
(240) 437 Landline Sandy Spring
(240) 400 Wireless Bethesda
(240) 407 Landline Mount Rainier
(240) 478 Wireless Cabin John
(240) 421 Wireless Rockville
(240) 482 Landline Cabin John
(240) 460 Wireless Silver Spring
(240) 430 Landline Kensington
(240) 472 Wireless Silver Spring
(240) 452 Landline Hagerstown
(240) 448 Wireless Waldorf
(240) 418 Wireless Beltsville
(240) 463 Wireless Silver Spring
(240) 429 Wireless Silver Spring
(240) 412 Wireless Waldorf
(240) 422 Wireless Frederick
(240) 445 Wireless Bethesda

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