Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: SLKEUT45DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
385-203 A Provo UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
385-255 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
385-322 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
385-549 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
435-566 A Tooele UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
435-575 A Park City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-439 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-454 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-456 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-460 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-665 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-672 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-684 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-727 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-757 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-795 A Salt Lake City UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-826 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-846 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      
801-848 A Midvale UT 5727 FIRSTDIGITAL TELECOM, LLC - UT 660      

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

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