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: 775

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-775 A Chowchilla CA SKTNCA01XPZ  318J COMCAST IP PHONE, LLC 738      
559-775 0 Chowchilla CA   649C ONVOY, LLC - CA 738   2016-02-24   
559-775 1 Chowchilla CA   649C ONVOY, LLC - CA 738   2016-02-24   
559-775 2 Chowchilla CA   981E BANDWIDTH.COM CLEC, LLC - CA 738   2016-08-20   
559-775 3 Chowchilla CA   318J COMCAST IP PHONE, LLC 738   2015-08-23   
559-775 4 Chowchilla CA   073H TELNYX LLC 738   2017-03-27   
559-775 5 Chowchilla CA   649C ONVOY, LLC - CA 738   2015-08-24   
559-775 6 Chowchilla CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738   2018-09-10   
559-775 7 Chowchilla CA   649C ONVOY, LLC - CA 738   2015-08-24   
559-775 8 Chowchilla CA   649C ONVOY, LLC - CA 738   2021-07-22   
559-775 9 Chowchilla CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2016-12-08   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.