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: 619 [Rate centres in NPA 619] [Dial plan for NPA 619]

NXX: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
619-387 A El Cajon CA SNDKCA882MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 732      
619-387 0 El Cajon CA   649C ONVOY, LLC - CA 732   2025-09-27   
619-387 1 El Cajon CA   624H ONVOY SPECTRUM, LLC 732   2025-10-14   
619-387 2 El Cajon CA SNDKCA882MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 732      
619-387 3 El Cajon CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2011-06-20   
619-387 4 El Cajon CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2011-04-24   
619-387 5 El Cajon CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2003-11-09   
619-387 6 El Cajon CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2005-03-10   
619-387 7 El Cajon CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2014-03-24   
619-387 8 El Cajon CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2011-05-23   
619-387 9 El Cajon CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2011-10-09   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.