Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 254

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-254 A Olds IA OLDSIAXORS2  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-254 1 Olds IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-254 2 Olds IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-254 3 Olds IA   221F ONVOY, LLC - IA 634   2021-05-10   
319-254 4 Olds IA   221F ONVOY, LLC - IA 634   2021-03-13   
319-254 5 Olds IA   221F ONVOY, LLC - IA 634   2020-06-27   
319-254 6 Olds IA   221F ONVOY, LLC - IA 634   2021-10-30   
319-254 7 Olds IA   508J CENTURYLINK COMMUNICATIONS, LLC 634   2016-10-07   
319-254 8 Olds IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-254 9 Olds IA   624H ONVOY SPECTRUM, LLC 634   2024-12-19   

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

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