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: DLLSTX97TMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
430-337 A Ector TX 939H COMMIO, LLC 552      
430-347 A Cash TX 939H COMMIO, LLC 552   2024-02-23   
469-975 A Plano TX 022H COMMIO, LLC 552      
817-954 A Grapevine TX 939H COMMIO, LLC 552   2024-02-22   
903-409 A Alba TX 939H COMMIO, LLC 552      
903-430 A Bonham TX 939H COMMIO, LLC 552      
945-314 A Irving TX 939H COMMIO, LLC 552   2024-02-18   
945-320 A Plano TX 939H COMMIO, LLC 552   2024-02-23   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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