Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 957

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-957 A Tivy Valley CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2025-08-01   
559-957 9 Tivy Valley CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2025-08-01   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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