Local Calling Guide

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

NXX: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-531 A Plano TX DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-531 0 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 1 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 2 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 3 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 4 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 5 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 6 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 7 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 8 Plano TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-531 9 Plano TX   7421 AT&T - LOCAL 552      

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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