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: 430

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-430 A Annandale MN ANDLMNXBPS0  1414 WINDSTREAM LAKEDALE, INC. 628      
320-430 0 Annandale MN   145J TERRA NOVA TELECOM INC. 628   2025-07-04   
320-430 4 Annandale MN MPLSMNCD9MD  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 628   2022-08-28   
320-430 9 Annandale MN ANDLMNXBPS0  1414 WINDSTREAM LAKEDALE, INC. 628   2016-10-10   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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