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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Ripon, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
209-994 5 MNTCCAXGBMD  649C ONVOY, LLC - CA 738   2022-11-13   
209-994 6 SKTNCACZ0MD  490J BOOST SUBSCRIBERCO L.L.C. 738   2024-06-29   
209-994 8   649C ONVOY, LLC - CA 738   2025-10-27   
209-994 9 SKTNCAGSDMD  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2022-11-12   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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