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: 474

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-474 A Elrosa MN STCDMNES6MD  4156 TEKSTAR COMMUNICATIONS, INC. 626      
320-474 3 Elrosa MN STCDMNES6MD  4156 TEKSTAR COMMUNICATIONS, INC. 626   2023-09-16   
320-474 4 Elrosa MN   145J TERRA NOVA TELECOM INC. 626   2025-05-29   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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