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.

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

NXX: 944

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-944 A Willow Creek CA CHICCACW8MD  965H FRACTEL, LLC 724      
530-944 0 Willow Creek CA CHICCA01XCX  649C ONVOY, LLC - CA 724   2021-07-19   
530-944 1 Willow Creek CA CHICCA01XCX  649C ONVOY, LLC - CA 724   2021-08-09   
530-944 4 Willow Creek CA CHICCACW8MD  965H FRACTEL, LLC 724   2021-05-07   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.