Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: RDOKTXHORS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
469-552 A Red Oak EMS TX 9533 SOUTHWESTERN BELL 552      
972-515 A Red Oak (Ovilla) TX 9533 SOUTHWESTERN BELL 552      
972-576 A Red Oak TX 9533 SOUTHWESTERN BELL 552      
972-617 A Red Oak EMS TX 9533 SOUTHWESTERN BELL 552      

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

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