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: 838

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-838 A McKinney EMS TX MCKNTXTERS1  9533 SOUTHWESTERN BELL 552      
972-838 0 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2006-01-12   
972-838 1 McKinney EMS TX   903C ONVOY, LLC - TX 552   2004-02-08   
972-838 2 McKinney EMS TX   9533 SOUTHWESTERN BELL 552      
972-838 3 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2005-03-28   
972-838 4 McKinney EMS TX   9533 SOUTHWESTERN BELL 552      
972-838 5 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2005-12-22   
972-838 6 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2005-09-16   
972-838 7 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2005-03-07   
972-838 8 McKinney EMS TX   6529 T-MOBILE USA, INC. 552   2005-01-14   
972-838 9 McKinney EMS TX   9533 SOUTHWESTERN BELL 552      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.