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: 992

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-992 A Corcoran CA CRCRCAXFDS0  4420 FRONTIER CALIFORNIA INC. 728      
559-992 0 Corcoran CA   649C ONVOY, LLC - CA 728   2017-04-21   
559-992 1 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 2 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 3 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 4 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 5 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 6 Corcoran CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2015-07-16   
559-992 7 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 8 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      
559-992 9 Corcoran CA   4420 FRONTIER CALIFORNIA INC. 728      

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

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