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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-829 A San Joaquin CA CNCKCAXFRS1  4420 FRONTIER CALIFORNIA INC. 728      
559-829 3 San Joaquin CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 728   2012-10-08   
559-829 7 San Joaquin CA   6010 NEW CINGULAR WIRELESS PCS, LLC 728   2008-09-29   
559-829 9 San Joaquin CA   4420 FRONTIER CALIFORNIA INC. 728      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.