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: 491

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-491 A Hanford CA FRSOCAYM4MD  6529 T-MOBILE USA, INC. 728      
559-491 0 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   
559-491 1 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   
559-491 2 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   
559-491 3 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   
559-491 4 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-08-13   
559-491 5 Hanford CA FRSNCA0103Z  318J COMCAST IP PHONE, LLC 728   2019-05-09   
559-491 6 Hanford CA FRSOCAYM6MD  5562 METROPCS, INC. 728   2016-04-18   
559-491 7 Hanford CA FRSOCAYM6MD  5562 METROPCS, INC. 728   2016-04-18   
559-491 8 Hanford CA FRSOCAYM6MD  5562 METROPCS, INC. 728   2021-02-01   
559-491 9 Hanford CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-08-13   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.