Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-310 A Marshalltown IA   221F ONVOY, LLC - IA 632   2024-04-29   
641-310 0 Marshalltown IA   221F ONVOY, LLC - IA 632      
641-310 1 Marshalltown IA   624H ONVOY SPECTRUM, LLC 632      
641-310 6 Marshalltown IA   695G IMON COMMUNICATIONS, LLC - IA 632      
641-310 9 Marshalltown IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632      

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

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