Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: KNVLOHXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
740-544 A Knoxville OH 0615 FRONTIER NORTH, INC. - OH 324      
740-544 5 Knoxville OH 0615 FRONTIER NORTH, INC. - OH 324      
740-544 6 Knoxville OH 0615 FRONTIER NORTH, INC. - OH 324      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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