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.

Alturas, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
530-233 A ALTRCAXFDS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-640 A ALTRCAAH1MD  6261 UNITED STATES CELLULAR CORP. - CALIFORNIA 724      
530-640 0 ALTRCAAH1MD  6261 UNITED STATES CELLULAR CORP. - CALIFORNIA 724      
530-640 1 ALTRCAAH1MD  6261 UNITED STATES CELLULAR CORP. - CALIFORNIA 724      
530-640 2 ALTRCAAH1MD  6261 UNITED STATES CELLULAR CORP. - CALIFORNIA 724      
530-640 3 ALTRCAAH1MD  6261 UNITED STATES CELLULAR CORP. - CALIFORNIA 724      
530-708 A CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724   2021-02-11   
530-708 0 CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724      
530-708 1 CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724      
530-708 2 CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724      
530-708 5 CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724   2020-11-13   
530-708 6   508J CENTURYLINK COMMUNICATIONS LLC 724   2017-08-24   
530-708 7 CHICCAEYKMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 724   2013-12-14   
530-708 8 CHICCAEY3MD  7453 U.S. TELEPACIFIC CORP. - CA 724   2011-03-18   
530-708 9   7145 TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO 724   2021-04-23   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.