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.

OCN: 1115 BUTLER-BREMER MUTUAL TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
319-275 A Frederika IA PLFDIAXODS1  635      
319-276 A Plainfield IA PLFDIAXODS1  635      
319-278 A Clarksville IA PLFDIAXODS1  635      
319-882 A Tripoli IA PLFDIAXODS1  635      
319-885 A Shell Rock IA PLFDIAXODS1  635      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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