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: RDNGCA026MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-351 A Redding CA 7421 AT&T - LOCAL 724      
530-351 0 Redding CA 7421 AT&T - LOCAL 724      
530-351 6 Redding CA 7421 AT&T - LOCAL 724   2003-05-11   
530-351 9 Redding CA 7421 AT&T - LOCAL 724      
530-838 3 Corning CA 7421 AT&T - LOCAL 724   2004-04-30   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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