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: SCRMCA0119Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
279-263 A Roseville: Citrus Heights DA CA 490J DISH WIRELESS, LLC 726   2024-08-03   
369-200 A Dixon CA 490J DISH WIRELESS, LLC 726      
530-947 A Colusa CA 490J DISH WIRELESS, LLC 726      
530-952 A Placerville: West DA CA 490J DISH WIRELESS, LLC 726      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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