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: OMAHNENWXPX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-854 7 Denison IA 221F ONVOY, LLC - IA 644   2021-05-18   
712-885 4 Ute IA 221F ONVOY, LLC - IA 644   2021-10-31   
712-885 7 Ute IA 221F ONVOY, LLC - IA 644   2021-05-21   
712-890 0 Council Bluffs IA 221F ONVOY, LLC - IA 644   2018-01-15   
712-890 1 Council Bluffs IA 221F ONVOY, LLC - IA 644   2018-01-15   

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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