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: EKGVCAXHDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
916-687 A Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 0 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 4 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 6 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 7 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 8 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      
916-687 9 Elk Grove CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 726      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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