Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Ralston, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-667 A RLTNIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 1   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 2   221F ONVOY, LLC - IA 644   2021-10-30   
712-667 3   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 6   221F ONVOY, LLC - IA 644   2021-05-21   
712-667 7   145J TERRA NOVA TELECOM INC. 644   2025-05-31   
712-667 8   516J TON80 COMMUNICATIONS, LLC 644   2022-04-21   
712-667 9   444G AUREON COMMUNICATIONS, LLC 644   2019-08-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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