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: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-410 A Leesburg VA CLPPVACURMD  138E ONVOY, LLC - VA 246      
571-410 0 Leesburg VA   138E ONVOY, LLC - VA 246   2019-12-31   
571-410 1 Leesburg VA   138E ONVOY, LLC - VA 246   2019-12-31   
571-410 2 Leesburg VA   138E ONVOY, LLC - VA 246   2019-12-31   
571-410 3 Leesburg VA   138E ONVOY, LLC - VA 246   2019-12-31   
571-410 4 Leesburg VA   138E ONVOY, LLC - VA 246   2019-12-31   
571-410 5 Leesburg VA   275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 246   2020-04-30   
571-410 6 Leesburg VA   138E ONVOY, LLC - VA 246   2020-05-02   
571-410 7 Leesburg VA   138E ONVOY, LLC - VA 246   2020-05-02   
571-410 8 Leesburg VA   138E ONVOY, LLC - VA 246   2020-05-02   
571-410 9 Leesburg VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 246   2021-07-31   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.