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: 788

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-788 A La Jolla CA SNDGCA0263Z  965H FRACTEL, LLC 732      
858-788 0 La Jolla CA SNDGCA0255Z  073H TELNYX LLC 732      
858-788 1 La Jolla CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-788 2 La Jolla CA SNDGCA0253Z  197D VONAGE AMERICA LLC 732      
858-788 3 La Jolla CA SNDGCA0253Z  197D VONAGE AMERICA LLC 732      
858-788 4 La Jolla CA SNDGCA0260Z  624H ONVOY SPECTRUM, LLC 732      
858-788 5 La Jolla CA SNDGCA0260Z  624H ONVOY SPECTRUM, LLC 732      
858-788 6 La Jolla CA SNDGCA0260Z  624H ONVOY SPECTRUM, LLC 732      
858-788 7 La Jolla CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-788 8 La Jolla CA SNDGCA0263Z  965H FRACTEL, LLC 732      
858-788 9 La Jolla CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.