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: 924

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-924 A Rancho Bernardo CA RBRNCA11DS0  9740 PACIFIC BELL 732      
858-924 0 Rancho Bernardo CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-924 1 Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732      
858-924 2 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
858-924 3 Rancho Bernardo CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-924 4 Rancho Bernardo CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-924 5 Rancho Bernardo CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-924 6 Rancho Bernardo CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-924 7 Rancho Bernardo CA SNDGCA0284Z  4733 PAETEC COMMUNICATIONS, INC. - CA 732      
858-924 8 Rancho Bernardo CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-924 9 Rancho Bernardo CA RBRNCA11DS0  9740 PACIFIC BELL 732      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.