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: 764

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-764 A Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 0 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 1 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 2 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 3 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 4 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 5 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 6 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 7 Del Mar CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2009-01-05   
858-764 8 Del Mar CA   829J PAETEC ITEL, LLC 732      
858-764 9 Del Mar CA   829J PAETEC ITEL, LLC 732      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.