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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NPA: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-857 A Chico CA CHICCA01XKX  515J IP HORIZON LLC 724      
530-857 1 Chico CA   515J IP HORIZON LLC 724      
530-857 8 Chico CA CHICCA01XCX  649C ONVOY, LLC - CA 724      
530-857 9 Chico CA CHICCA01XCX  649C ONVOY, LLC - CA 724      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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