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: 507

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-507 A Harlingen TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568      
956-507 0 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568      
956-507 1 Harlingen TX   004F BANDWIDTH.COM CLEC, LLC - TX 568      
956-507 2 Harlingen TX   004F BANDWIDTH.COM CLEC, LLC - TX 568      
956-507 3 Harlingen TX HRLNTXDU5MD  490J DISH WIRELESS, LLC 568      
956-507 4 Harlingen TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568      
956-507 7 Harlingen TX HRLNTXATTMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 568      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.