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: 763

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-763 A Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 0 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 1 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 2 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 3 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 4 Dallas TX DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-763 5 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-11-27   
972-763 6 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2011-03-24   
972-763 7 Dallas TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2021-12-19   
972-763 8 Dallas TX DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2011-06-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.