Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Glen Ullin, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-348 A HAZNNDXADS1  4413 WEST RIVER TELECOMMUNICATIONS COOP. - ND 638      
701-995 A   8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2025-10-02   
701-995 4   8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2025-10-02   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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