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: 208

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-208 A Poway CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
858-208 0 Poway CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2010-02-27   
858-208 1 Poway CA   515J IP HORIZON LLC 732      
858-208 2 Poway CA   515J IP HORIZON LLC 732      
858-208 3 Poway CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2010-07-04   
858-208 4 Poway CA   515J IP HORIZON LLC 732      
858-208 5 Poway CA   145J TERRA NOVA TELECOM INC. 732   2023-06-24   
858-208 6 Poway CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-08-11   
858-208 7 Poway CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-08-11   
858-208 8 Poway CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-08-11   
858-208 9 Poway CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2004-10-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.