Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Dutch John, UT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
435-880 A SLKDUT111MD  013B UNION TELEPHONE COMPANY 654      
435-885 A DTJHUTXCDS0  2297 UNION TEL. CO. 654      

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

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