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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-319 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
972-320 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
972-321 A Grand Prairie EMS TX 6630 SPOK, INC. 552      
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: Thu, 16 Jul 2026 02:21:55 UTC

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