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.

Switch: EKGVCAXGX3X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
279-240 A Elk Grove CA 649C ONVOY, LLC - CA 726      
279-297 A Elk Grove CA 649C ONVOY, LLC - CA 726      
279-333 A Elk Grove CA 649C ONVOY, LLC - CA 726   2024-01-21   
916-610 A Isleton CA 649C ONVOY, LLC - CA 726      
916-629 A Meadowview CA 649C ONVOY, LLC - CA 726   2024-01-21   

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

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