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: 313

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-313 A Del Mar CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
858-313 0 Del Mar CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-313 1 Del Mar CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-313 2 Del Mar CA SNDGCA0260Z  624H ONVOY SPECTRUM, LLC 732      
858-313 4 Del Mar CA SNDGCA02XHX  939H COMMIO, LLC 732      
858-313 5 Del Mar CA SNDGCA02XHX  939H COMMIO, LLC 732      
858-313 6 Del Mar CA SNDGCA02XHX  939H COMMIO, LLC 732      
858-313 7 Del Mar CA SNDGCA02XHX  939H COMMIO, LLC 732      
858-313 8 Del Mar CA SNDGCA02XHX  939H COMMIO, LLC 732      
858-313 9 Del Mar CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.