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: CRTYNCXADS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-677 A Yadkinville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424      
336-677 1 Yadkinville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424   2006-06-18   
336-677 2 Yadkinville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424      
336-677 3 Yadkinville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424      
336-677 6 Yadkinville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424      
336-910 5 Elkin NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424   2026-03-26   
743-727 5 Boonville NC 5418 YADKIN VALLEY TELECOM, INC. - NC 424   2025-11-02   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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