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: EKTNORXBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
541-584 A Elkton OR 2371 CASCADE UTILITIES, INC. 670      
541-587 A Scottsburg OR 2371 CASCADE UTILITIES, INC. 670      
541-599 A Ash Valley OR 2371 CASCADE UTILITIES, INC. 670      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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