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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-421 A Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666      
928-421 0 Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2014-04-27   
928-421 1 Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2014-04-27   
928-421 2 Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2015-02-19   
928-421 3 Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2015-02-19   
928-421 4 Winslow AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2015-02-19   
928-421 5 Winslow AZ PHNXAZMAX2Y  5736 COMMNET WIRELESS, LLC 666   2016-03-03   
928-421 6 Winslow AZ TEMPAZNR7MD  5562 METROPCS, INC. 666   2016-06-17   
928-421 7 Winslow AZ PHNXAZUI8MD  508J CENTURYLINK COMMUNICATIONS, LLC 666   2015-09-26   
928-421 8 Winslow AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2016-03-14   
928-421 9 Winslow AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2015-11-19   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.