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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-528 A Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 0 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 1 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 2 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 3 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 4 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 5 Dinuba CA FRSNCAQRAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2018-07-30   
559-528 6 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      
559-528 7 Dinuba CA FRSNCA01XUZ  624H ONVOY SPECTRUM, LLC 728   2024-01-11   
559-528 8 Dinuba CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728   2015-05-03   
559-528 9 Dinuba CA ORSICA11RS3  9740 PACIFIC BELL 728      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.