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: 864

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-864 A Caruthers CA CRTHCA11RS1  9740 PACIFIC BELL 728      
559-864 0 Caruthers CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2015-06-16   
559-864 1 Caruthers CA   9740 PACIFIC BELL 728      
559-864 2 Caruthers CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2015-06-16   
559-864 3 Caruthers CA   9740 PACIFIC BELL 728      
559-864 4 Caruthers CA   6529 T-MOBILE USA, INC. 728   2015-03-30   
559-864 5 Caruthers CA   6529 T-MOBILE USA, INC. 728   2015-03-30   
559-864 6 Caruthers CA   9740 PACIFIC BELL 728      
559-864 7 Caruthers CA   6529 T-MOBILE USA, INC. 728   2015-03-30   
559-864 8 Caruthers CA   9740 PACIFIC BELL 728      
559-864 9 Caruthers CA   9740 PACIFIC BELL 728      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.