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: 202

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-202 A La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 0 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 1 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 2 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 3 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 4 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 5 La Jolla CA SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732   2007-03-13   
858-202 6 La Jolla CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2009-07-29   
858-202 7 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 8 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      
858-202 9 La Jolla CA SNDGCA15DS1  9740 PACIFIC BELL 732      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.