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: EKGVCAXGX1X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
279-322 3 Walnut Grove CA 624H ONVOY SPECTRUM, LLC 726   2023-07-29   
279-322 7 Walnut Grove CA 624H ONVOY SPECTRUM, LLC 726   2024-10-20   
279-322 8 Walnut Grove CA 624H ONVOY SPECTRUM, LLC 726   2024-10-20   
279-766 8 Meadowview CA 624H ONVOY SPECTRUM, LLC 726   2024-10-20   
279-899 5 Courtland CA 624H ONVOY SPECTRUM, LLC 726   2023-07-29   
279-901 A Elk Grove CA 624H ONVOY SPECTRUM, LLC 726      
279-901 9 Elk Grove CA 624H ONVOY SPECTRUM, LLC 726   2022-01-16   
279-946 9 Meadowview CA 624H ONVOY SPECTRUM, LLC 726   2024-10-20   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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