Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 996

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-996 A Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-996 0 Dallas TX   829J PAETEC ITEL, LLC 552   2007-06-11   
972-996 1 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2010-09-04   
972-996 2 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2010-09-04   
972-996 3 Dallas TX   829J PAETEC ITEL, LLC 552   2009-10-20   
972-996 4 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2007-03-16   
972-996 5 Dallas TX   829J PAETEC ITEL, LLC 552   2008-06-29   
972-996 6 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2008-10-30   
972-996 7 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-05-06   
972-996 8 Dallas TX   9533 SOUTHWESTERN BELL 552      
972-996 9 Dallas TX   9533 SOUTHWESTERN BELL 552      

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

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