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: 315

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-315 A Granite Falls MN STCDMNTOX0X  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626      
320-315 0 Granite Falls MN   980E BANDWIDTH.COM CLEC, LLC - MN 626   2008-11-30   
320-315 1 Granite Falls MN   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 626   2010-12-13   
320-315 3 Granite Falls MN   624H ONVOY SPECTRUM, LLC 626   2024-12-19   
320-315 4 Granite Falls MN   5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626      
320-315 6 Granite Falls MN   8405 TELEPORT COMMUNICATIONS AMERICA, LLC - MN 626   2022-06-06   
320-315 8 Granite Falls MN   073H TELNYX LLC 626   2020-07-19   
320-315 9 Granite Falls MN   184D ONVOY, LLC - MN 626   2023-09-03   

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

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