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: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-221 A Flagstaff AZ PHNXAZMAXPX  7421 AT&T LOCAL 666      
928-221 0 Flagstaff AZ   6529 T-MOBILE USA, INC. 666   2005-06-13   
928-221 1 Flagstaff AZ   6529 T-MOBILE USA, INC. 666   2005-10-02   
928-221 2 Flagstaff AZ   6529 T-MOBILE USA, INC. 666   2006-02-04   
928-221 3 Flagstaff AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-02-23   
928-221 4 Flagstaff AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-02-23   
928-221 5 Flagstaff AZ   7421 AT&T LOCAL 666   2003-12-06   
928-221 6 Flagstaff AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-03-27   
928-221 7 Flagstaff AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2006-03-27   
928-221 8 Flagstaff AZ   6529 T-MOBILE USA, INC. 666   2006-05-06   
928-221 9 Flagstaff AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2008-12-07   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.