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: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-644 A Caruthers CA FRSNCAVVDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 728      
559-644 0 Caruthers CA   649C ONVOY, LLC - CA 728   2013-03-15   
559-644 1 Caruthers CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 728      
559-644 2 Caruthers CA   6529 T-MOBILE USA, INC. 728   2015-02-17   
559-644 3 Caruthers CA   981E BANDWIDTH.COM CLEC, LLC - CA 728   2014-04-07   
559-644 4 Caruthers CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 728      
559-644 5 Caruthers CA   6529 T-MOBILE USA, INC. 728   2013-09-12   
559-644 6 Caruthers CA   6529 T-MOBILE USA, INC. 728   2015-02-17   
559-644 7 Caruthers CA   6529 T-MOBILE USA, INC. 728   2014-08-14   
559-644 8 Caruthers CA   6529 T-MOBILE USA, INC. 728   2014-10-17   
559-644 9 Caruthers CA   6529 T-MOBILE USA, INC. 728   2013-12-09   

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

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