Local Calling Guide

Area code/prefix search

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

NXX: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-541 A Sigourney IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-541 0 Sigourney IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-541 1 Sigourney IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2018-04-02   
641-541 2 Sigourney IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2018-04-02   
641-541 3 Sigourney IA DESMIADTTMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 632   2017-06-26   
641-541 4 Sigourney IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2021-09-04   
641-541 5 Sigourney IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-16   
641-541 6 Sigourney IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2019-11-29   
641-541 7 Sigourney IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2017-03-29   
641-541 8 Sigourney IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-541 9 Sigourney IA   6266 UNITED STATES CELLULAR - IA 632   2025-06-12   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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