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: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 970

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-970 A Harlingen TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568      
956-970 0 Harlingen TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2006-01-19   
956-970 1 Harlingen TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2007-03-18   
956-970 2 Harlingen TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2008-11-02   
956-970 3 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-01-28   
956-970 4 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-01-28   
956-970 5 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-01-28   
956-970 6 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-02-19   
956-970 7 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-01-28   
956-970 8 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-02-19   
956-970 9 Harlingen TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2006-09-10   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.