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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-577 A Mohave Valley AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
928-577 1 Mohave Valley AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2017-01-18   
928-577 2 Mohave Valley AZ KGMNAZXCEMD  227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 666   2014-03-03   
928-577 3 Mohave Valley AZ PHNXAZ28VMD  073H TELNYX LLC 666   2021-02-21   
928-577 4 Mohave Valley AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2019-12-24   
928-577 5 Mohave Valley AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2018-07-26   
928-577 6 Mohave Valley AZ PHNXAZMAXYX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2020-05-24   
928-577 7 Mohave Valley AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2013-08-01   
928-577 8 Mohave Valley AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2017-04-20   
928-577 9 Mohave Valley AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2019-10-12   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.