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: 722

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-722 A Granite Falls MN GRFLMNXGRS0  1456 CENTURYLINK OF MINNESOTA, INC. 626      
320-722 2 Granite Falls MN   516J TON80 COMMUNICATIONS, LLC 626   2022-04-11   
320-722 7 Granite Falls MN   508J CENTURYLINK COMMUNICATIONS, LLC 626   2017-06-20   
320-722 8 Granite Falls MN   7783 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MN 626   2018-08-06   

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

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