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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NPA: 357 [Rate centres in NPA 357] [Dial plan for NPA 357]

NXX: 222

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
357-222 A Kingsburg CA   649C ONVOY, LLC - CA 728   2026-11-14   
357-222 2 Kingsburg CA   649C ONVOY, LLC - CA 728   2026-11-14   
357-222 3 Kingsburg CA   649C ONVOY, LLC - CA 728   2026-11-14   
357-222 4 Kingsburg CA   649C ONVOY, LLC - CA 728   2026-11-14   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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