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: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-774 A Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 0 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 1 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 2 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 3 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 4 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 5 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-774 6 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 7 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-774 8 Dallas TX DLLTTX01DMD  5562 METROPCS, INC. 552      
972-774 9 Dallas TX DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.