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: DLLSTXRIDS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-464 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-486 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-653 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-712 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-745 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-746 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-748 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-757 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-761 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-782 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-977 A Dallas TX 9533 SOUTHWESTERN BELL 552      

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

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