Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 917

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-917 A Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-917 0 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-05-12   
972-917 1 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-05-12   
972-917 2 Dallas TX   490J BOOST SUBSCRIBERCO L.L.C. 552   2025-06-16   
972-917 3 Dallas TX   490J BOOST SUBSCRIBERCO L.L.C. 552   2025-07-16   
972-917 4 Dallas TX   490J BOOST SUBSCRIBERCO L.L.C. 552   2025-09-01   
972-917 5 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-06-19   
972-917 6 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-917 7 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-04-18   
972-917 8 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-04-18   
972-917 9 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-04-18   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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