Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: PHNXAZMADS6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
480-293 A Phoenix AZ 7421 AT&T - LOCAL 666      
480-293 0 Phoenix AZ 7421 AT&T - LOCAL 666      
480-293 3 Phoenix AZ 7421 AT&T - LOCAL 666      
480-293 5 Phoenix AZ 7421 AT&T - LOCAL 666      
480-293 9 Phoenix AZ 7421 AT&T - LOCAL 666      
480-420 A Phoenix AZ 7421 AT&T - LOCAL 666      
480-420 5 Phoenix AZ 7421 AT&T - LOCAL 666   2010-09-30   
480-629 3 Phoenix AZ 7421 AT&T - LOCAL 666      
602-293 1 Phoenix AZ 7421 AT&T - LOCAL 666      
602-293 2 Phoenix AZ 7421 AT&T - LOCAL 666      
602-293 4 Phoenix AZ 7421 AT&T - LOCAL 666      
602-293 5 Phoenix AZ 7421 AT&T - LOCAL 666      
602-412 A Phoenix AZ 7421 AT&T - LOCAL 666      
602-412 2 Phoenix AZ 7421 AT&T - LOCAL 666      
602-412 9 Phoenix AZ 7421 AT&T - LOCAL 666      
623-293 A Phoenix AZ 7421 AT&T - LOCAL 666      
623-293 4 Phoenix AZ 7421 AT&T - LOCAL 666      
623-293 5 Phoenix AZ 7421 AT&T - LOCAL 666      
623-293 9 Phoenix AZ 7421 AT&T - LOCAL 666      
928-785 1 Yuma AZ 7421 AT&T - LOCAL 666   2005-10-07   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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