Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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San Joaquin, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
559-829 2 FRSNCA01XTY  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 728   2020-11-09   
559-829 3 FRSNCAVVDS3  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 728   2012-10-08   
559-829 4 FRSNCAPMDMD  6010 NEW CINGULAR WIRELESS PCS, LLC 728   2023-07-16   
559-829 5 FRSNCAPMDMD  6010 NEW CINGULAR WIRELESS PCS, LLC 728   2021-11-29   
559-829 6   145J TERRA NOVA TELECOM INC. 728   2025-04-16   
559-829 7 FRSNCAPMDMD  6010 NEW CINGULAR WIRELESS PCS, LLC 728   2008-09-29   
559-829 8 FRSNCAPMDMD  6010 NEW CINGULAR WIRELESS PCS, LLC 728   2021-04-19   
559-829 9 CNCKCAXFRS1  4420 FRONTIER CALIFORNIA INC. 728      

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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