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.

Switch: FRBRTXBLGT9

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-983 6 Irving TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 7 Irving TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 8 Irving TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 9 Irving TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-989 A Grand Prairie EMS TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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