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: 235

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-235 A Dunlap CA SNGRCAXFWMD  649C ONVOY, LLC - CA 728   2024-01-21   
559-235 0 Dunlap CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-235 1 Dunlap CA   649C ONVOY, LLC - CA 728   2019-05-10   
559-235 2 Dunlap CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-235 3 Dunlap CA   649C ONVOY, LLC - CA 728   2019-02-24   
559-235 4 Dunlap CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-235 5 Dunlap CA   649C ONVOY, LLC - CA 728   2013-03-23   
559-235 6 Dunlap CA   649C ONVOY, LLC - CA 728   2019-02-24   
559-235 7 Dunlap CA   649C ONVOY, LLC - CA 728   2019-07-18   
559-235 8 Dunlap CA   649C ONVOY, LLC - CA 728   2019-07-18   
559-235 9 Dunlap CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728   2013-12-20   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.