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: 876

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-876 A Ennis EMS TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      
972-876 0 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2012-08-23   
972-876 1 Ennis EMS TX   9533 SOUTHWESTERN BELL 552      
972-876 2 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2013-01-04   
972-876 3 Ennis EMS TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-11-09   
972-876 4 Ennis EMS TX   516C AT&T CORP. 552   2010-11-29   
972-876 5 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2018-02-11   
972-876 6 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2013-01-04   
972-876 7 Ennis EMS TX   903C ONVOY, LLC - TX 552   2009-03-08   
972-876 8 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2012-08-23   
972-876 9 Ennis EMS TX   6529 T-MOBILE USA, INC. 552   2012-06-14   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.