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: DLLSTXEMDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-234 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-239 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-265 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-345 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-346 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-360 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-361 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-363 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-365 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-368 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-369 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-373 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-378 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-691 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-692 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-696 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-706 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-739 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-750 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-890 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-891 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-987 A Dallas TX 9533 SOUTHWESTERN BELL 552      
469-232 A Dallas TX 9533 SOUTHWESTERN BELL 552      
469-800 A Dallas TX 9533 SOUTHWESTERN BELL 552      
469-862 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-348 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-349 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-391 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-566 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-860 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-861 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-863 A Dallas TX 9533 SOUTHWESTERN BELL 552      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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