Local Calling Guide

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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 206

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-206 A Armstrong IA ARMSIAXPPS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630      
712-206 0 Armstrong IA   624H ONVOY SPECTRUM, LLC 630   2024-03-17   
712-206 1 Armstrong IA   6529 T-MOBILE USA, INC. 630   2024-08-15   
712-206 2 Armstrong IA   221F ONVOY, LLC - IA 630   2021-09-04   
712-206 3 Armstrong IA   221F ONVOY, LLC - IA 630   2021-10-31   
712-206 4 Armstrong IA   221F ONVOY, LLC - IA 630   2022-01-02   
712-206 7 Armstrong IA   221F ONVOY, LLC - IA 630   2022-03-19   
712-206 8 Armstrong IA   221F ONVOY, LLC - IA 630   2022-03-19   
712-206 9 Armstrong IA   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 630   2018-03-18   

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

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