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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-356 A Grand Prairie TX 6630 SPOK, INC. 552      
972-397 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
972-451 A Grand Prairie TX 6630 SPOK, INC. 552      
972-568 A McKinney EMS TX 6630 SPOK, INC. 552      
972-609 A Grand Prairie TX 6630 SPOK, INC. 552      
972-622 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
972-667 A Grand Prairie TX 6630 SPOK, INC. 552      
972-760 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
972-902 A Grand Prairie TX 6630 SPOK, INC. 552      
972-909 A Grand Prairie TX 6630 SPOK, INC. 552      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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