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: WLNTIAXODS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-396 8 Council Bluffs IA 774B WALNUT TELEPHONE COMPANY, INC. - IA 644   2006-12-30   
712-485 8 Neola IA 774B WALNUT TELEPHONE COMPANY, INC. - IA 644   2006-12-30   
712-545 8 Crescent IA 774B WALNUT TELEPHONE COMPANY, INC. - IA 644   2006-12-30   
712-566 8 Underwood IA 774B WALNUT TELEPHONE COMPANY, INC. - IA 644   2006-12-30   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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