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: 601

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-601 A Caruthers CA FRSOCAYM4MD  6529 T-MOBILE USA, INC. 728      
559-601 0 Caruthers CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728   2016-09-19   
559-601 1 Caruthers CA FRSNCA01XMZ  073H TELNYX LLC 728   2017-03-24   
559-601 6 Caruthers CA FRSOCAYM4MD  6529 T-MOBILE USA, INC. 728   2016-11-03   
559-601 8 Caruthers CA FRSNCAPMGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 728   2020-04-15   
559-601 9 Caruthers CA FRSOCAYM4MD  6529 T-MOBILE USA, INC. 728   2016-06-02   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.