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: DLLSTXSEDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-287 A Seagoville TX 9533 SOUTHWESTERN BELL 552      
972-427 A Crandall EMS TX 9533 SOUTHWESTERN BELL 552      
972-472 A Crandall TX 9533 SOUTHWESTERN BELL 552      
972-474 A Combine TX 9533 SOUTHWESTERN BELL 552      
972-476 A Combine EMS TX 9533 SOUTHWESTERN BELL 552      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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