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      
220-678 9 Somerset OH 7421 AT&T - LOCAL 324   2022-10-07   
614-383 A Gahanna OH 7421 AT&T - LOCAL 324      
614-383 3 Gahanna OH 7421 AT&T - LOCAL 324      
614-385 A Alton OH 7421 AT&T - LOCAL 324      
614-385 9 Alton OH 7421 AT&T - LOCAL 324      
614-558 A Columbus OH 7421 AT&T - LOCAL 324      
614-558 9 Columbus OH 7421 AT&T - LOCAL 324      
614-601 A Worthington OH 7421 AT&T - LOCAL 324      
614-601 9 Worthington OH 7421 AT&T - LOCAL 324      
614-602 A Dublin OH 7421 AT&T - LOCAL 324      
614-602 0 Dublin OH 7421 AT&T - LOCAL 324      
614-604 A Reynoldsburg OH 7421 AT&T - LOCAL 324      
614-604 1 Reynoldsburg OH 7421 AT&T - LOCAL 324      
614-682 A Westerville OH 7421 AT&T - LOCAL 324      
614-682 1 Westerville OH 7421 AT&T - LOCAL 324      
614-822 A Dublin OH 7421 AT&T - LOCAL 324      
614-822 2 Dublin OH 7421 AT&T - LOCAL 324      
740-236 5 Marietta OH 7421 AT&T - LOCAL 324   2003-11-10   
740-275 3 Steubenville OH 7421 AT&T - LOCAL 324   2004-04-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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