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: DESMIAITX0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-405 1 Kiron IA 751F MCC TELEPHONY OF IOWA, LLC - IA 630   2021-06-05   
712-975 7 Schaller IA 751F MCC TELEPHONY OF IOWA, LLC - IA 630   2021-09-04   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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