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: ARTNVAARDS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-336 A Engleside VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-370 A Arcola VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-441 A Herndon VA 275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      
571-620 A Washington Zone 17 VA 275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      
571-888 A Dulles VA 275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      
703-844 A Dulles VA 275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      

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

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