Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-643 A DNLPIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-643 1 DNLPIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-643 2 DNLPIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-643 3 OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-10-30   
712-643 5 DNLPIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-643 6 OMAHNENWXPX  221F ONVOY, LLC - IA 644   2021-05-21   
712-643 7 DNLPIAAC0MD  5395 FARMERS MUTUAL COOPERATIVE TELEPHONE COMPANY - IA 644   2021-01-01   
712-643 9 DNLPIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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