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.

OCN: 2311 CAL-ORE TELEPHONE CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-397 A Dorris CA DRRSCAABDS0  724      
530-398 A MacDoel CA DRRSCAABDS0  724      
530-664 A Newell CA DRRSCAABDS0  724      
530-667 A Tulelake CA DRRSCAABDS0  724      

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

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