Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-379 A Granite Falls MN STCDMNTOXXX  719F MCC TELEPHONY OF MINNESOTA, LLC - MN 626      
320-379 1 Granite Falls MN   719F MCC TELEPHONY OF MINNESOTA, LLC - MN 626   2010-05-16   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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