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.

Switch: VINNVACBAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-982 A Washington Zone 1 DC 515J IP HORIZON LLC 236      
571-676 A Manassas VA 515J IP HORIZON LLC 236   2024-07-22   
571-679 A Washington Zone 17 VA 515J IP HORIZON LLC 236   2024-07-29   
571-696 A Engleside VA 515J IP HORIZON LLC 236   2025-01-23   
571-698 A Arcola VA 515J IP HORIZON LLC 236   2025-01-23   
571-702 A Dale City VA 515J IP HORIZON LLC 236   2025-01-23   
571-704 A Nokesville VA 515J IP HORIZON LLC 236   2025-01-23   
571-705 A Washington Zone 17 VA 515J IP HORIZON LLC 236   2025-01-23   
571-713 A Occoquan VA 515J IP HORIZON LLC 236   2025-01-25   
571-714 A Washington Zone 8 VA 515J IP HORIZON LLC 236   2025-01-25   
703-804 A Herndon VA 515J IP HORIZON LLC 236   2024-07-22   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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