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: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-397 A Montevideo MN STCDMNATUMD  4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      
320-397 1 Montevideo MN   4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      
320-397 2 Montevideo MN   624H ONVOY SPECTRUM, LLC 626   2024-12-19   
320-397 8 Montevideo MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 626   2024-10-30   
320-397 9 Montevideo MN   4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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