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: SXCYIA794MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-420 4 Onawa IA 145J TERRA NOVA TELECOM INC. 630      
712-420 7 Onawa IA 145J TERRA NOVA TELECOM INC. 630      
712-584 4 Spencer IA 145J TERRA NOVA TELECOM INC. 630      
712-710 4 Sioux City IA 145J TERRA NOVA TELECOM INC. 630      
712-833 A Sioux City IA 145J TERRA NOVA TELECOM INC. 630      
712-880 6 Mapleton IA 145J TERRA NOVA TELECOM INC. 630      
712-882 4 Mapleton IA 145J TERRA NOVA TELECOM INC. 630      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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