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: SCRMCA01X9Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
707-640 A Dixon CA 508J CENTURYLINK COMMUNICATIONS, LLC 726      
916-389 A Sacramento: Main DA CA 508J CENTURYLINK COMMUNICATIONS, LLC 726      
916-527 A Walnut Grove CA 508J CENTURYLINK COMMUNICATIONS, LLC 726      
916-623 A Isleton CA 508J CENTURYLINK COMMUNICATIONS, LLC 726      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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