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: FTWOTXEDDS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
817-210 A Fort Worth TX 7421 AT&T - LOCAL 552      
817-344 A Fort Worth TX 7421 AT&T - LOCAL 552      
817-345 A North Richland Hills TX 7421 AT&T - LOCAL 552      
817-353 A Fort Worth TX 7421 AT&T - LOCAL 552      
817-438 A Euless TX 7421 AT&T - LOCAL 552      
817-541 A Roanoke TX 7421 AT&T - LOCAL 552      
817-697 A Keller TX 7421 AT&T - LOCAL 552      
817-757 A Weatherford TX 7421 AT&T - LOCAL 552      
817-761 A Alvarado TX 7421 AT&T - LOCAL 552      
817-807 A Arlington TX 7421 AT&T - LOCAL 552      

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

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