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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 951F AIRUS, INC. - TX

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
469-501 A Dallas TX DLLSTX37DFS  552      
469-501 1 Dallas TX DLLSTX37DFS  552   2018-10-05   
469-868 A Dallas TX IRNGTX277MD  552      
469-868 1 Dallas TX IRNGTX277MD  552   2016-12-19   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.