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: SNDICAETAMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
858-997 6 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2008-07-11   
858-997 8 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2007-10-08   
858-997 9 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2007-11-06   
858-999 5 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2011-03-31   

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

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