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: 588

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-588 A Rancho Bernardo CA SNDGCA0263Z  965H FRACTEL, LLC 732      
858-588 0 Rancho Bernardo CA SNDGCAJW6MD  073H TELNYX LLC 732   2021-03-16   
858-588 1 Rancho Bernardo CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-18   
858-588 2 Rancho Bernardo CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-18   
858-588 3 Rancho Bernardo CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-03-18   
858-588 4 Rancho Bernardo CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-07-16   
858-588 5 Rancho Bernardo CA SNDGCA02XSZ  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732   2024-11-19   
858-588 6 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2021-06-07   
858-588 7 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2021-06-07   
858-588 8 Rancho Bernardo CA SNDGCA0263Z  965H FRACTEL, LLC 732   2021-03-15   
858-588 9 Rancho Bernardo CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2021-07-16   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.