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.
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Switch: DLLSTXGPRPA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-237 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-260 A Grand Prairie EMS TX 9533 SOUTHWESTERN BELL 552      
972-262 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-263 A Grand Prairie EMS TX 9533 SOUTHWESTERN BELL 552      
972-264 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-266 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-269 A Grand Prairie EMS TX 9533 SOUTHWESTERN BELL 552      
972-282 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-504 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-558 A Grand Prairie EMS TX 9533 SOUTHWESTERN BELL 552      
972-642 A Grand Prairie TX 9533 SOUTHWESTERN BELL 552      
972-901 A Grand Prairie EMS TX 9533 SOUTHWESTERN BELL 552      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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