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: OMAKNEYWDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
402-252 A Valentine NE 478H AIRUS, INC. - NE 644      
402-973 A Omaha NE 478H AIRUS, INC. - NE 644      
531-225 A Omaha NE 478H AIRUS, INC. - NE 644      
712-481 A Shenandoah IA 478H AIRUS, INC. - NE 644      
712-517 A Red Oak IA 423H AIRUS, INC - IA 644      
712-543 A Underwood IA 423H AIRUS, INC - IA 644      
712-772 A Mineola IA 423H AIRUS, INC - IA 644      
712-787 A Neola IA 423H AIRUS, INC - IA 644      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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