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: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-855 A El Cajon CA SNDGCA0263Z  965H FRACTEL LLC 732   2021-06-24   
858-855 0 El Cajon CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2021-08-13   
858-855 1 El Cajon CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2021-08-13   
858-855 2 El Cajon CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2021-08-13   
858-855 3 El Cajon CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2021-08-13   
858-855 4 El Cajon CA SNDGCA02XHX  939H COMMIO LLC 732   2021-08-28   
858-855 5 El Cajon CA SNDGCA0263Z  965H FRACTEL LLC 732   2021-06-24   
858-855 6 El Cajon CA SNDGCA02XHX  939H COMMIO LLC 732   2021-08-28   
858-855 7 El Cajon CA SNDGCA02XHX  939H COMMIO LLC 732   2021-08-28   
858-855 8 El Cajon CA SNDGCA02XHX  939H COMMIO LLC 732   2021-08-28   
858-855 9 El Cajon CA SNDGCA02XHX  939H COMMIO LLC 732   2021-08-28   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.