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: 517

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-517 A Oskaloosa IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632      
641-517 0 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-10-15   
641-517 1 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-10-15   
641-517 2 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-10-15   
641-517 3 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-10-15   
641-517 4 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-10-15   
641-517 5 Oskaloosa IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2024-03-29   
641-517 6 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2024-05-20   
641-517 9 Oskaloosa IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2022-02-27   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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