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: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-671 A Lenox IA DESMIADTFMD  221F ONVOY, LLC - IA 632      
641-671 0 Lenox IA   6266 UNITED STATES CELLULAR - IA 632   2022-12-04   
641-671 1 Lenox IA   6266 UNITED STATES CELLULAR - IA 632   2023-07-30   
641-671 2 Lenox IA   6529 T-MOBILE USA, INC. 632   2024-09-12   
641-671 3 Lenox IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-03-10   
641-671 4 Lenox IA   221F ONVOY, LLC - IA 632   2020-11-19   
641-671 5 Lenox IA   221F ONVOY, LLC - IA 632   2020-11-19   
641-671 6 Lenox IA   221F ONVOY, LLC - IA 632   2018-12-23   
641-671 7 Lenox IA   508J CENTURYLINK COMMUNICATIONS, LLC 632   2018-12-25   
641-671 8 Lenox IA   221F ONVOY, LLC - IA 632   2019-10-28   
641-671 9 Lenox IA   6266 UNITED STATES CELLULAR - IA 632   2019-02-21   

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

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