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: DLLSTXTAXTZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-487 A Dallas TX 624H ONVOY SPECTRUM, LLC 552      
214-639 A Dallas TX 624H ONVOY SPECTRUM, LLC 552      
214-896 A Allen TX 624H ONVOY SPECTRUM, LLC 552   2024-12-20   
214-898 A Celina TX 624H ONVOY SPECTRUM, LLC 552      
254-852 A Cisco TX 624H ONVOY SPECTRUM, LLC 552      
430-357 A Sulphur Springs TX 624H ONVOY SPECTRUM, LLC 552   2024-06-08   
430-358 A Jackson TX 624H ONVOY SPECTRUM, LLC 552   2024-06-08   
430-430 A Quinlan TX 624H ONVOY SPECTRUM, LLC 552   2024-06-08   
430-895 A Birthright TX 624H ONVOY SPECTRUM, LLC 552      
469-694 A Dallas TX 624H ONVOY SPECTRUM, LLC 552      
682-396 A Arlington TX 624H ONVOY SPECTRUM, LLC 552      
682-397 A North Richland Hills TX 624H ONVOY SPECTRUM, LLC 552      
817-254 A Fort Worth TX 624H ONVOY SPECTRUM, LLC 552      
817-325 A Arlington TX 624H ONVOY SPECTRUM, LLC 552      
817-384 A Fort Worth TX 624H ONVOY SPECTRUM, LLC 552      
817-670 A Arlington TX 624H ONVOY SPECTRUM, LLC 552      
817-970 A Arlington TX 624H ONVOY SPECTRUM, LLC 552   2024-05-15   
817-971 A Fort Worth TX 624H ONVOY SPECTRUM, LLC 552   2024-08-11   
817-973 A Fort Worth TX 624H ONVOY SPECTRUM, LLC 552   2024-05-15   
903-358 A Wills Point TX 624H ONVOY SPECTRUM, LLC 552   2025-01-10   
945-255 A Anna TX 624H ONVOY SPECTRUM, LLC 552      
945-329 A Wilmer TX 624H ONVOY SPECTRUM, LLC 552   2024-04-10   
945-355 A Bristol TX 624H ONVOY SPECTRUM, LLC 552      
945-713 A Frisco TX 624H ONVOY SPECTRUM, LLC 552   2024-04-10   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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