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: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-687 A Poway CA SNDGCA0266Z  516J TON80 COMMUNICATIONS, LLC 732      
858-687 0 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-687 1 Poway CA SNDGCA0260Z  624H ONVOY SPECTRUM, LLC 732      
858-687 2 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-687 3 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-687 4 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-687 5 Poway CA SNDGCA0253Z  197D VONAGE AMERICA LLC 732      
858-687 6 Poway CA   939H COMMIO, LLC 732      
858-687 7 Poway CA SNDGCA0266Z  516J TON80 COMMUNICATIONS, LLC 732      
858-687 8 Poway CA   939H COMMIO, LLC 732      
858-687 9 Poway CA   939H COMMIO, LLC 732      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.