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: ADSNMIXI3MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-252 3 Addison MI 558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 346   2013-07-18   
517-595 A Waldron MI 558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 346      
517-595 4 Waldron MI 558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 346   2012-11-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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