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: CSBYORXXX1X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
458-230 A Coos Bay OR 750E ONVOY, LLC - OR 670      
458-324 A Gold Beach OR 750E ONVOY, LLC - OR 670   2024-06-17   
458-710 A Coos Bay OR 750E ONVOY, LLC - OR 670      
541-541 A Brookings OR 750E ONVOY, LLC - OR 670   2024-10-18   

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

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