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: BWFDTXXABMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-301 A Brownfield TX 903C ONVOY, LLC - TX 544      
806-301 0 Brownfield TX 903C ONVOY, LLC - TX 544   2022-12-12   
806-301 8 Brownfield TX 903C ONVOY, LLC - TX 544   2024-03-02   
806-301 9 Brownfield TX 903C ONVOY, LLC - TX 544   2024-04-04   
806-303 0 Post TX 903C ONVOY, LLC - TX 544   2023-09-17   
806-305 8 Denver City TX 903C ONVOY, LLC - TX 544   2023-09-17   
806-405 0 Lamesa TX 903C ONVOY, LLC - TX 544   2023-09-17   
806-405 2 Lamesa TX 903C ONVOY, LLC - TX 544   2025-04-12   
806-405 8 Lamesa TX 903C ONVOY, LLC - TX 544   2024-03-03   
806-556 1 Lamesa TX 903C ONVOY, LLC - TX 544   2024-04-18   
806-556 3 Lamesa TX 903C ONVOY, LLC - TX 544   2025-03-02   
806-556 8 Lamesa TX 903C ONVOY, LLC - TX 544   2024-06-29   
806-614 0 Brownfield TX 903C ONVOY, LLC - TX 544   2024-05-03   
806-614 1 Brownfield TX 903C ONVOY, LLC - TX 544   2024-06-22   
806-614 8 Brownfield TX 903C ONVOY, LLC - TX 544   2025-02-02   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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