Local Calling Guide

Area code/prefix search

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NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 505

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-505 A Irving TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-505 0 Irving TX   5562 METROPCS, INC. 552   2006-10-02   
972-505 1 Irving TX   5562 METROPCS, INC. 552   2006-10-02   
972-505 2 Irving TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2006-06-26   
972-505 3 Irving TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2006-06-26   
972-505 4 Irving TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-505 5 Irving TX   5562 METROPCS, INC. 552   2006-05-08   
972-505 6 Irving TX   5562 METROPCS, INC. 552   2007-11-12   
972-505 7 Irving TX   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2006-10-26   
972-505 8 Irving TX   5562 METROPCS, INC. 552   2006-04-26   
972-505 9 Irving TX   5562 METROPCS, INC. 552   2007-11-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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