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: DCTRTXXATMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
817-383 A Rhome TX 903C ONVOY, LLC - TX 552      
940-204 A Santo TX 903C ONVOY, LLC - TX 552      
940-236 A St Jo TX 903C ONVOY, LLC - TX 552      
940-296 A Palo Pinto TX 903C ONVOY, LLC - TX 552      
940-446 A Graford TX 903C ONVOY, LLC - TX 552      
940-470 A Possum Kingdom Lake TX 903C ONVOY, LLC - TX 552      
940-490 A Millsap TX 903C ONVOY, LLC - TX 552      
940-910 A Decatur TX 903C ONVOY, LLC - TX 552      

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

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