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U.S. Area Codes by Number: 4



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US AREA CODES STARTING WITH THE NUMBER 4
401 Rhode Island 423 Tennessee
402 Nebraska 424 California
404 Georgia 425 Washington
405 Oklahoma 434 Virginia
406 Montana 435 Utah
407 Florida 440 Ohio
408 California 443 Maryland
409 Texas 445 Pennsylvania
410 Maryland 464 Illinois
412 Pennsylvania 469 Texas
413 Massachusetts 470 Georgia
414 Wisconsin 475 Connecticut
415 California 478 Georgia
417 Missouri 479 Arkansas
419 Ohio 480 Arizona
420 Wisconsin 484 Pennsylvania