Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: DLLSTXADDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-661 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-663 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-715 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-763 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-788 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-934 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-980 A Dallas TX 9533 SOUTHWESTERN BELL 552      

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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