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: 683

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-683 A Rancho Bernardo CA SNDGCA023KD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 732      
858-683 0 Rancho Bernardo CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-683 1 Rancho Bernardo CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-683 2 Rancho Bernardo CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-683 3 Rancho Bernardo CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732      
858-683 4 Rancho Bernardo CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
858-683 5 Rancho Bernardo CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
858-683 6 Rancho Bernardo CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-683 7 Rancho Bernardo CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-683 8 Rancho Bernardo CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-683 9 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.