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: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-657 A Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-657 0 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-657 1 Firebaugh CA FRSNCA01TMD  939H COMMIO, LLC 728   2023-08-19   
559-657 2 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-657 3 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-657 5 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2016-03-23   
559-657 6 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2016-03-23   
559-657 7 Firebaugh CA FRSNCA0104Z  506J TWILIO INTERNATIONAL, INC. 728   2021-08-30   
559-657 8 Firebaugh CA FRSNCA01XJY  9262 UTILITY TELECOM GROUP, LLC - CA 728   2008-04-16   
559-657 9 Firebaugh CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.