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: 872

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-872 A Ennis TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      
972-872 0 Ennis TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2004-10-15   
972-872 1 Ennis TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2004-10-15   
972-872 2 Ennis TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      
972-872 3 Ennis TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      
972-872 4 Ennis TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2004-04-04   
972-872 5 Ennis TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2004-10-15   
972-872 6 Ennis TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2013-01-07   
972-872 7 Ennis TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      
972-872 8 Ennis TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2012-11-10   
972-872 9 Ennis TX ENNSTXTRDS0  9533 SOUTHWESTERN BELL 552      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.