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: SNTDCAUJG04

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-430 6 Gilroy CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2010-12-02   
408-852 7 Gilroy CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-08-01   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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