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: FTWOTXEDDS5

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
682-303 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
682-885 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-250 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-332 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-333 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-334 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-335 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-336 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-338 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-339 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-347 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-348 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-390 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-810 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-820 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-870 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-877 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-878 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-882 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      
817-885 A Fort Worth TX 9533 SOUTHWESTERN BELL 552      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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