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: 571 [Rate centres in NPA 571] [Dial plan for NPA 571]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-578 A Leesburg VA CLPPVA01CMD  5562 METROPCS, INC. 246      
571-578 0 Leesburg VA CLPPVACURMD  138E ONVOY, LLC - VA 246   2024-11-04   
571-578 1 Leesburg VA LSBGVA151MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 246   2022-08-18   
571-578 2 Leesburg VA LSBGVA151MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 246   2022-08-18   
571-578 3 Leesburg VA CLPPVACURMD  138E ONVOY, LLC - VA 246   2022-10-28   
571-578 4 Leesburg VA CLPPVACURMD  138E ONVOY, LLC - VA 246   2022-10-28   
571-578 5 Leesburg VA FRBGVAFBMMD  4644 TELEPORT COMMUNICATIONS AMERICA, LLC - VA 246   2022-09-09   
571-578 6 Leesburg VA FRBGVAFBMMD  4644 TELEPORT COMMUNICATIONS AMERICA, LLC - VA 246   2022-09-09   
571-578 7 Leesburg VA LSBGVA151MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 246   2022-11-05   
571-578 8 Leesburg VA LSBGVA151MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 246   2022-11-05   
571-578 9 Leesburg VA CLPPVA01CMD  5562 METROPCS, INC. 246   2022-05-22   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.