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: 340

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-340 A Dunlap CA FRSMCA150MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-340 0 Dunlap CA   145J TERRA NOVA TELECOM INC. 728   2025-05-15   
559-340 1 Dunlap CA   649C ONVOY, LLC - CA 728   2020-12-01   
559-340 2 Dunlap CA   649C ONVOY, LLC - CA 728   2020-12-01   
559-340 3 Dunlap CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728   2018-10-21   
559-340 4 Dunlap CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728   2005-08-02   
559-340 5 Dunlap CA   073H TELNYX LLC 728   2018-07-10   
559-340 6 Dunlap CA   649C ONVOY, LLC - CA 728   2022-05-12   
559-340 8 Dunlap CA   981E BANDWIDTH.COM CLEC, LLC - CA 728   2009-02-24   
559-340 9 Dunlap CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728   2016-12-08   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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