Local Calling Guide

Area code/prefix search

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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-997 1   5562 METROPCS, INC. 552   2011-03-24   
972-997 2   9533 SOUTHWESTERN BELL 552      
972-997 3   9533 SOUTHWESTERN BELL 552      
972-997 4   9533 SOUTHWESTERN BELL 552      
972-997 5   5562 METROPCS, INC. 552   2011-03-24   
972-997 6   5562 METROPCS, INC. 552   2011-03-24   
972-997 7   9533 SOUTHWESTERN BELL 552      
972-997 8   9533 SOUTHWESTERN BELL 552      
972-997 9   9533 SOUTHWESTERN BELL 552      

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

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