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: 497

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-497 A Glidden IA ADBNIAXO0MD  593K MCC TELEPHONY LLC 644      
712-497 1 Glidden IA ADBNIAXO0MD  593K MCC TELEPHONY LLC 644   2010-05-07   
712-497 2 Glidden IA OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-10-30   
712-497 4 Glidden IA OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-05-21   

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

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