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: CLMBOH1169Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
220-678 A Somerset OH 7421 AT&T - LOCAL 324      
614-383 A Gahanna OH 7421 AT&T - LOCAL 324      
614-385 A Alton OH 7421 AT&T - LOCAL 324      
614-558 A Columbus OH 7421 AT&T - LOCAL 324      
614-601 A Worthington OH 7421 AT&T - LOCAL 324      
614-602 A Dublin OH 7421 AT&T - LOCAL 324      
614-604 A Reynoldsburg OH 7421 AT&T - LOCAL 324      
614-682 A Westerville OH 7421 AT&T - LOCAL 324      
614-822 A Dublin OH 7421 AT&T - LOCAL 324      

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

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