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: SNANTXCA80Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-329 A San Antonio TX 624H ONVOY SPECTRUM, LLC 566      
210-915 A San Antonio TX 624H ONVOY SPECTRUM, LLC 566      
726-727 A San Antonio TX 624H ONVOY SPECTRUM, LLC 566      
830-398 A Bandera TX 624H ONVOY SPECTRUM, LLC 566      
830-508 A Karnes City-Falls City TX 624H ONVOY SPECTRUM, LLC 566      
830-638 A Batesville TX 624H ONVOY SPECTRUM, LLC 566      
830-658 A Big Wells TX 624H ONVOY SPECTRUM, LLC 566      
956-952 A Laredo TX 624H ONVOY SPECTRUM, LLC 566      
956-964 A Encinal TX 624H ONVOY SPECTRUM, LLC 566      

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

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