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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-200 6 Hayden AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-06-25   
520-263 6 Sierra Vista AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2016-01-14   
520-348 A Willcox AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-348 7 Willcox AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-08-20   
520-415 7 Nogales AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-06-25   
520-422 3 Bisbee AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2016-01-14   
520-475 5 Tucson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2020-08-21   
520-595 A Benson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-595 7 Benson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-08-02   
520-639 A Tucson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-639 7 Tucson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-06-16   
520-896 8 San Manuel AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-06-26   
520-989 7 Tucson AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2017-05-03   
928-316 A Pima AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668      
928-316 7 Pima AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-08-02   
928-402 2 Globe AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2016-09-12   
928-961 7 Globe AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2016-06-09   
928-985 7 Safford AZ 508J CENTURYLINK COMMUNICATIONS, LLC 668   2015-07-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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