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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-256 A Creston IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2024-01-18   
641-256 0 Creston IA   5562 METROPCS, INC. 632   2025-04-25   
641-256 1 Creston IA   5562 METROPCS, INC. 632   2025-04-25   
641-256 2 Creston IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-256 9 Creston IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2024-01-18   

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

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