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.

NPA: 602 [Rate centres in NPA 602] [Dial plan for NPA 602]

NXX: 412

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
602-412 A Phoenix AZ PHNXAZMADS6  7421 AT&T - LOCAL 666      
602-412 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-03-26   
602-412 1 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2006-09-01   
602-412 2 Phoenix AZ   7421 AT&T - LOCAL 666      
602-412 3 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2004-09-16   
602-412 4 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2004-09-16   
602-412 5 Phoenix AZ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 666   2004-09-16   
602-412 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-03-26   
602-412 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-01-02   
602-412 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-01-02   
602-412 9 Phoenix AZ   7421 AT&T - LOCAL 666      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.