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: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-524 A Sanger CA SNGRCAXFPMD  321J HD CARRIER LLC 728      
559-524 0 Sanger CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-524 1 Sanger CA   649C ONVOY, LLC - CA 728   2021-05-09   
559-524 2 Sanger CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-524 3 Sanger CA   4420 FRONTIER CALIFORNIA INC. 728   2010-07-02   
559-524 4 Sanger CA   649C ONVOY, LLC - CA 728   2021-05-09   
559-524 5 Sanger CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728   2006-01-13   
559-524 6 Sanger CA   4420 FRONTIER CALIFORNIA INC. 728   2009-12-15   
559-524 7 Sanger CA   4420 FRONTIER CALIFORNIA INC. 728   2009-12-15   
559-524 8 Sanger CA   649C ONVOY, LLC - CA 728   2021-05-09   
559-524 9 Sanger CA   321J HD CARRIER LLC 728   2019-11-17   

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

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