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: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
619-328 A El Cajon CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732      
619-328 0 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2003-08-27   
619-328 1 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2003-09-26   
619-328 2 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2004-05-14   
619-328 3 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2002-08-26   
619-328 4 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2002-08-26   
619-328 5 El Cajon CA   318J COMCAST IP PHONE, LLC 732   2002-09-19   
619-328 6 El Cajon CA   318J COMCAST IP PHONE, LLC 732      
619-328 7 El Cajon CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-10-19   
619-328 8 El Cajon CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-10-19   
619-328 9 El Cajon CA   318J COMCAST IP PHONE, LLC 732      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.