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 2 Creston IA   624H ONVOY SPECTRUM, LLC 632      
641-256 9 Creston IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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