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: 442

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-442 A Litchfield MN STCDMNES6MD  4156 TEKSTAR COMMUNICATIONS, INC. 626      
320-442 0 Litchfield MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 626   2025-11-25   
320-442 1 Litchfield MN   184D ONVOY, LLC - MN 626   2021-06-11   
320-442 2 Litchfield MN   184D ONVOY, LLC - MN 626   2021-06-11   
320-442 4 Litchfield MN   4156 TEKSTAR COMMUNICATIONS, INC. 626   2021-01-02   
320-442 8 Litchfield MN   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 626   2024-02-24   
320-442 9 Litchfield MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 626   2023-12-28   

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

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