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: DYTNOH22X2Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
937-877 1 Tipp City OH 309B CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 328   2008-03-15   
937-912 0 Beavercreek OH 309B CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 328   2007-01-08   
937-955 1 Germantown OH 309B CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 328   2023-03-24   
937-999 A Dayton OH 600F CBTS TECHNOLOGY SOLUTIONS LLC - OH 328      
937-999 0 Dayton OH 600F CBTS TECHNOLOGY SOLUTIONS LLC - OH 328   2011-02-07   

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

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