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: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 844

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-844 A Clayton CA SNJSCAYBDS0  7453 U.S. TELEPACIFIC CORP. - CA 722      
925-844 0 Clayton CA   321J HD CARRIER LLC 722   2016-10-20   
925-844 1 Clayton CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-03-29   
925-844 3 Clayton CA SNJUCACL8MD  145J TERRA NOVA TELECOM INC. 722   2021-01-06   
925-844 4 Clayton CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2015-10-03   
925-844 6 Clayton CA   321J HD CARRIER LLC 722   2016-10-20   
925-844 7 Clayton CA SNVACAHZ0MD  7575 CENTURYLINK COMMUNICATIONS LLC 722   2014-05-27   
925-844 8 Clayton CA   321J HD CARRIER LLC 722   2016-10-20   
925-844 9 Clayton CA SNJSCAYBDS0  7453 U.S. TELEPACIFIC CORP. - CA 722      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.