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: SNANTXDIRMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
830-400 A Kenedy TX 903C ONVOY, LLC - TX 566      
830-415 A Eagle Pass TX 903C ONVOY, LLC - TX 566      
830-490 A Poth TX 903C ONVOY, LLC - TX 566      
830-500 A New Braunfels TX 903C ONVOY, LLC - TX 566      
830-514 A Kenedy TX 903C ONVOY, LLC - TX 566      
830-544 A Uvalde TX 903C ONVOY, LLC - TX 566      
830-573 A Brackettville TX 903C ONVOY, LLC - TX 566      
830-590 A Marion TX 903C ONVOY, LLC - TX 566      
830-602 A Crystal City TX 903C ONVOY, LLC - TX 566      
830-698 A Cotulla TX 903C ONVOY, LLC - TX 566      
830-800 A Seguin TX 903C ONVOY, LLC - TX 566      
830-830 A Del Rio TX 903C ONVOY, LLC - TX 566      
830-971 A Eagle Pass TX 903C ONVOY, LLC - TX 566      
956-449 A Laredo TX 903C ONVOY, LLC - TX 566   2024-06-01   
956-477 A Laredo TX 903C ONVOY, LLC - TX 566      
956-749 A Laredo TX 903C ONVOY, LLC - TX 566   2025-02-03   
956-815 A Laredo TX 903C ONVOY, LLC - TX 566      
956-857 A Laredo TX 903C ONVOY, LLC - TX 566      
956-906 A Laredo TX 903C ONVOY, LLC - TX 566   2024-04-05   

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

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