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.
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Switch: CHICCA01XGX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-255 3 Redding CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 724   2021-05-04   
530-922 A Oroville CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 724      
530-922 9 Oroville CA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 724   2018-09-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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