Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-921 A Laton CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728      
559-921 0 Laton CA FRSNCA01DS5  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-921 1 Laton CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-921 2 Laton CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-921 4 Laton CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728      
559-921 7 Laton CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-921 8 Laton CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-921 9 Laton CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728   2015-05-03   

Last updated: Fri, 10 Sep 2021 12:38:21 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.