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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OCN: 0828 FRONTIER COMMUNICATIONS OF THORNTOWN, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
765-436 A Thorntown IN THTWINXADS0  336      
765-436 2 Thorntown IN   336      
765-436 3 Thorntown IN   336      
765-436 5 Thorntown IN   336      
765-436 7 Thorntown IN   336      
765-436 9 Thorntown IN   336      
765-523 A Clarks Hill IN CLHLINXARSA  336      
765-523 2 Clarks Hill IN   336      
765-523 3 Clarks Hill IN   336      
765-523 5 Clarks Hill IN   336      
765-523 9 Clarks Hill IN   336      

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

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