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.
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Switch: DYTNOH22XXY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
937-949 A Dayton OH 156J RCLEC, INC. 328      
937-949 4 Dayton OH 156J RCLEC, INC. 328   2014-12-18   
937-977 7 Dayton OH 156J RCLEC, INC. 328   2017-03-03   
937-993 0 Dayton OH 457H RCLEC, INC. - OH 328   2015-12-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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