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.

NPA: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-278 A Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 0 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-10-29   
830-278 1 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 2 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 3 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 4 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 5 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 6 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 7 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 8 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      
830-278 9 Uvalde TX UVLDTXUVDS0  9533 SOUTHWESTERN BELL 566      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.