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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-921 A Green Mountain IA DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
641-921 1 Green Mountain IA DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2010-05-05   
641-921 2 Green Mountain IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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