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.

Douds, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-279 A KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-07-07   
641-279 0   624H ONVOY SPECTRUM, LLC 632   2024-07-07   
641-936 A DODSIAXORS0  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 0   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 1   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 2   221F ONVOY, LLC - IA 632   2021-04-16   
641-936 3   221F ONVOY, LLC - IA 632   2019-11-29   
641-936 4   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 5   221F ONVOY, LLC - IA 632   2021-04-16   
641-936 6   508J CENTURYLINK COMMUNICATIONS, LLC 632   2017-03-21   
641-936 7   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 8   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      
641-936 9   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-15   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.