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: LSTNIDSHDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-743 A Lewiston ID 9638 QWEST CORPORATION 676      
208-746 A Lewiston ID 9638 QWEST CORPORATION 676      
208-750 A Lewiston ID 9638 QWEST CORPORATION 676      
208-792 A Lewiston ID 9638 QWEST CORPORATION 676      
208-798 A Lewiston ID 9638 QWEST CORPORATION 676      
208-799 A Lewiston ID 9638 QWEST CORPORATION 676      
509-751 A Clarkston WA 9638 QWEST CORPORATION 676      
509-758 A Clarkston WA 9638 QWEST CORPORATION 676      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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