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.

NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 715

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-715 A Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 0 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 1 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 2 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 3 Dallas TX DLLSTXSQDS2  8958 XO TEXAS, INC. 552   2010-11-03   
972-715 4 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 5 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 6 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 7 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 8 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-715 9 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.