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: DLLSTX97X2X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
430-350 A Emory TX 939H COMMIO, LLC 552   2024-02-23   
469-697 A Dallas TX 939H COMMIO, LLC 552      
469-962 A De Soto TX 939H COMMIO, LLC 552      
817-660 A Fort Worth TX 939H COMMIO, LLC 552   2024-02-22   
817-951 A Keller TX 939H COMMIO, LLC 552   2024-02-22   
817-990 A Euless TX 939H COMMIO, LLC 552   2024-02-23   
903-972 A Canton TX 939H COMMIO, LLC 552   2024-02-24   
903-979 A Jewett TX 939H COMMIO, LLC 552   2024-02-24   
940-352 A Argyle TX 939H COMMIO, LLC 552   2024-02-24   
945-313 A Dallas TX 939H COMMIO, LLC 552   2024-02-18   
945-315 A McKinney TX 939H COMMIO, LLC 552   2024-02-18   
945-316 A Anna TX 939H COMMIO, LLC 552   2024-02-22   
945-317 A Venus TX 939H COMMIO, LLC 552   2024-02-22   
945-318 A De Soto TX 939H COMMIO, LLC 552   2024-02-22   
945-319 A Frisco TX 939H COMMIO, LLC 552   2024-02-23   

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

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