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: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-576 A Red Oak TX RDOKTXHORS0  9533 SOUTHWESTERN BELL 552      
972-576 0 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 1 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 2 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 3 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 4 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 5 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 6 Red Oak TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2015-05-12   
972-576 7 Red Oak TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2013-04-27   
972-576 8 Red Oak TX   9533 SOUTHWESTERN BELL 552      
972-576 9 Red Oak TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2013-04-27   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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