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: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-401 A Avenal CA FRSNCAQRAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728      
559-401 0 Avenal CA   515J IP HORIZON LLC 728   2016-05-09   
559-401 1 Avenal CA   515J IP HORIZON LLC 728      
559-401 2 Avenal CA   515J IP HORIZON LLC 728      
559-401 3 Avenal CA   649C ONVOY, LLC - CA 728   2021-08-13   
559-401 4 Avenal CA   515J IP HORIZON LLC 728      
559-401 5 Avenal CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2021-04-01   
559-401 6 Avenal CA   649C ONVOY, LLC - CA 728   2021-08-13   
559-401 7 Avenal CA   939H COMMIO, LLC 728   2023-08-19   
559-401 8 Avenal CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2023-06-07   
559-401 9 Avenal CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2017-08-19   

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.