Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 790

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-790 A Sigourney IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-790 0 Sigourney IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-790 1 Sigourney IA   6266 UNITED STATES CELLULAR - IA 632   2017-04-17   
641-790 7 Sigourney IA   5562 METROPCS, INC. 632   2025-04-27   
641-790 9 Sigourney IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2020-06-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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