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.

Switch: DLLATX58DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-888 A Dallas TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
254-888 A Kopperl TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
469-244 A Dallas TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
469-270 A Allen TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
469-440 A Plano TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
469-554 A Dallas TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
682-800 A Arlington TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
903-999 A Martins Mill TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
940-777 A Sanger TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
940-999 A Denton TX 319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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