4XX Area Codes

401 - Rhode Island
402 - Nebraska
404 - Georgia
405 - Oklahoma
406 - Montana
407 - Florida
408 - California
409 - Texas
410 - Maryland
412 - Pennsylvania
413 - Massachusetts
414 - Wisconsin
415 - California
417 - Missouri
419 - Ohio
423 - Tennessee
425 - Washington
432 - Texas
434 - Virginia
435 - Utah
440 - Ohio
478 - Georgia
479 - Arkansas
480 - Arizona

Other Area Codes Groups

2XX

3XX

5XX

6XX

7XX

8XX

9XX