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: DYTNOH15WMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
937-964 0 North Hampton OH 516C AT&T CORP. 328   2011-01-19   
937-979 4 Dayton OH 516C AT&T CORP. 328   2015-03-09   
937-991 1 Dayton OH 516C AT&T CORP. 328   2016-07-14   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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