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: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-821 A Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552      
972-821 0 Irving TX   6529 T-MOBILE USA, INC. 552   2019-07-12   
972-821 1 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-05-20   
972-821 2 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-05-20   
972-821 3 Irving TX   6529 T-MOBILE USA, INC. 552   2006-01-13   
972-821 4 Irving TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2004-12-17   
972-821 5 Irving TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2004-12-17   
972-821 6 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-02-18   
972-821 7 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-02-18   
972-821 8 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-02-18   
972-821 9 Irving TX DLLTTX01DMD  5562 METROPCS, INC. 552   2005-02-18   

Last updated: Sat, 02 May 2026 12:20:53 UTC

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