Local Calling Guide

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

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-503 A Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632      
641-503 0 Mount Ayr IA   6529 T-MOBILE USA, INC. 632   2025-06-01   
641-503 1 Mount Ayr IA   6529 T-MOBILE USA, INC. 632   2025-06-01   
641-503 2 Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2021-04-16   
641-503 3 Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2021-04-16   
641-503 4 Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2020-11-23   
641-503 5 Mount Ayr IA   5562 METROPCS, INC. 632   2025-06-01   
641-503 6 Mount Ayr IA   5562 METROPCS, INC. 632   2025-06-01   
641-503 8 Mount Ayr IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2020-09-28   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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