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: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 595

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-595 A Benson AZ TCSNAZMAXYX  508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-595 0 Benson AZ   579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2015-08-03   
520-595 1 Benson AZ   630E ONVOY, LLC - AZ 668   2016-04-22   
520-595 2 Benson AZ   630E ONVOY, LLC - AZ 668   2016-04-22   
520-595 3 Benson AZ   630E ONVOY, LLC - AZ 668   2016-04-11   
520-595 4 Benson AZ   630E ONVOY, LLC - AZ 668   2016-04-11   
520-595 5 Benson AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2015-08-30   
520-595 6 Benson AZ   6529 T-MOBILE USA, INC. 668   2016-02-28   
520-595 7 Benson AZ   508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-08-02   
520-595 8 Benson AZ   6529 T-MOBILE USA, INC. 668   2015-10-18   
520-595 9 Benson AZ   6529 T-MOBILE USA, INC. 668   2015-08-03   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.