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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
