Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: RYCYTXNERS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-635 A Royse City TX 9533 SOUTHWESTERN BELL 552      
972-635 1 Royse City TX 9533 SOUTHWESTERN BELL 552      
972-635 2 Royse City TX 9533 SOUTHWESTERN BELL 552      
972-635 6 Royse City TX 9533 SOUTHWESTERN BELL 552      
972-635 7 Royse City TX 9533 SOUTHWESTERN BELL 552      
972-635 9 Royse City TX 9533 SOUTHWESTERN BELL 552      
972-636 A Royse City EMS TX 9533 SOUTHWESTERN BELL 552      
972-636 0 Royse City EMS TX 9533 SOUTHWESTERN BELL 552      
972-636 2 Royse City EMS TX 9533 SOUTHWESTERN BELL 552      
972-636 3 Royse City EMS TX 9533 SOUTHWESTERN BELL 552      
972-636 7 Royse City EMS TX 9533 SOUTHWESTERN BELL 552      
972-636 9 Royse City EMS TX 9533 SOUTHWESTERN BELL 552      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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