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: 845C INTRADO COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
865-275 A Oak Ridge TN KNVLTNMAYFX  474      
865-275 9 Oak Ridge TN KNVLTNMAYFX  474      
901-506 A Memphis TN MMPHTNMAYHX  468      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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