Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Linn Grove, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-296 A LNGVIAXORS1  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 630      
712-296 0   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 630      
712-296 1   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 630      
712-296 2   221F ONVOY, LLC - IA 630   2021-05-05   
712-296 3   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 630      
712-296 4   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 630      
712-296 5   221F ONVOY, LLC - IA 630   2021-10-31   
712-296 6   221F ONVOY, LLC - IA 630   2023-06-09   
712-296 7   508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-24   
712-296 8   624H ONVOY SPECTRUM, LLC 630   2024-03-17   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.