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: DYTNOH15OMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
513-360 1 Monroe OH 7421 AT&T - LOCAL 328   2009-05-01   
513-804 A Middletown OH 7421 AT&T - LOCAL 328      
513-804 9 Middletown OH 7421 AT&T - LOCAL 328      
937-242 A Dayton OH 7421 AT&T - LOCAL 328      
937-242 4 Dayton OH 7421 AT&T - LOCAL 328      
937-242 9 Dayton OH 7421 AT&T - LOCAL 328      
937-248 2 Trotwood OH 7421 AT&T - LOCAL 328   2003-10-21   
937-306 3 Beavercreek OH 7421 AT&T - LOCAL 328   2003-10-20   
937-310 4 Bellbrook OH 7421 AT&T - LOCAL 328   2003-11-25   
937-347 4 Xenia OH 7421 AT&T - LOCAL 328   2006-04-24   
937-471 A Springfield OH 7421 AT&T - LOCAL 328      
937-471 9 Springfield OH 7421 AT&T - LOCAL 328      
937-476 4 Dayton OH 7421 AT&T - LOCAL 328   2009-04-20   
937-506 A Tipp City OH 7421 AT&T - LOCAL 328      
937-506 9 Tipp City OH 7421 AT&T - LOCAL 328      
937-530 A Miamisburg-West Carrollton OH 7421 AT&T - LOCAL 328      
937-530 1 Miamisburg-West Carrollton OH 7421 AT&T - LOCAL 328      
937-552 A Troy OH 7421 AT&T - LOCAL 328      
937-552 0 Troy OH 7421 AT&T - LOCAL 328      
937-840 3 Hillsboro OH 7421 AT&T - LOCAL 328   2006-02-24   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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