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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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 588

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-588 A Audubon IA ADBNIAXO0MD  593K MCC TELEPHONY LLC 644      
712-588 0 Audubon IA OMAHNENWXMX  6701 AERIAL COMMUNICATIONS, INC. 644   2024-09-05   
712-588 1 Audubon IA ADBNIAXO0MD  593K MCC TELEPHONY LLC 644   2010-04-16   
712-588 7 Audubon IA OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-05-21   
712-588 8 Audubon IA OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-09-20   

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

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