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: DLLSTXEVDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-275 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-275 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-381 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-388 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-489 A Dallas TX 9533 SOUTHWESTERN BELL 552      
214-489 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
214-489 6 Dallas TX 9533 SOUTHWESTERN BELL 552      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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