Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-206 A ARMSIAXPPS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-206 0   624H ONVOY SPECTRUM, LLC 630   2024-03-17   
712-206 1   6529 T-MOBILE USA, INC. 630   2024-08-15   
712-206 2   221F ONVOY, LLC - IA 630   2021-09-04   
712-206 3   221F ONVOY, LLC - IA 630   2021-10-31   
712-206 4   221F ONVOY, LLC - IA 630   2022-01-02   
712-206 7   221F ONVOY, LLC - IA 630   2022-03-19   
712-206 8   221F ONVOY, LLC - IA 630   2022-03-19   
712-206 9   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630   2018-03-18   
712-864 A ARMSIAXPPS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-864 0   444G AUREON COMMUNICATIONS, LLC 630   2016-06-29   
712-864 1   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-864 3   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-864 4   5562 METROPCS, INC. 630   2018-08-03   
712-864 6   508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-23   
712-864 7   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-864 8   221F ONVOY, LLC - IA 630   2021-05-05   
712-868 A ARMSIAXODS0  7215 INDEPENDENT NETWORKS, LLC 630      

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

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