Local Calling Guide

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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-433 A What Cheer IA WHCHIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 632      
641-433 2 What Cheer IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-433 3 What Cheer IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-16   
641-433 4 What Cheer IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2019-11-29   
641-433 5 What Cheer IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2021-04-22   
641-433 6 What Cheer IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2020-11-20   
641-433 7 What Cheer IA DESMIADTXJX  508J CENTURYLINK COMMUNICATIONS, LLC 632   2017-03-31   
641-433 8 What Cheer IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2021-04-22   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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