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: PTLDOR13X6X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
458-300 A Hermiston OR 158H INVOXIO INCORPORATED 672      
458-400 A Culver OR 158H INVOXIO INCORPORATED 672      
458-500 A Black Butte OR 158H INVOXIO INCORPORATED 672      
458-600 A Bend OR 158H INVOXIO INCORPORATED 672      
458-800 A Madras OR 158H INVOXIO INCORPORATED 672      
458-899 A Redmond OR 158H INVOXIO INCORPORATED 672      
458-900 A Athena OR 158H INVOXIO INCORPORATED 672      
971-399 A Falls City OR 158H INVOXIO INCORPORATED 672      
971-799 A Westport OR 158H INVOXIO INCORPORATED 672      
971-899 A Rainier OR 158H INVOXIO INCORPORATED 672      
971-900 A Salem OR 158H INVOXIO INCORPORATED 672      
971-988 A Astoria OR 158H INVOXIO INCORPORATED 672      
971-990 A Portland OR 158H INVOXIO INCORPORATED 672      

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

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