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: 566

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-566 A Three Rivers CA FRSMCA150MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-566 0 Three Rivers CA   649C ONVOY, LLC - CA 728      
559-566 2 Three Rivers CA   649C ONVOY, LLC - CA 728      
559-566 6 Three Rivers CA   981E BANDWIDTH.COM CLEC, LLC - CA 728   2018-04-16   
559-566 7 Three Rivers CA   649C ONVOY, LLC - CA 728   2019-02-24   
559-566 8 Three Rivers CA   649C ONVOY, LLC - CA 728   2019-02-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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