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: 648

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-648 A Poway CA SNDGCAJW7MD  114J EXIANT COMMUNICATIONS LLC 732      
858-648 0 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-04   
858-648 1 Poway CA SNDGCAJW7MD  114J EXIANT COMMUNICATIONS LLC 732   2018-04-23   
858-648 2 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-04   
858-648 3 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-04   
858-648 4 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2020-11-16   
858-648 5 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2020-11-16   
858-648 6 Poway CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2020-11-16   
858-648 7 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-04   
858-648 8 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2018-09-16   
858-648 9 Poway CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.