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.

NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-255 A Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 0 Fort Worth TX DLLTTX01CMD  5562 METROPCS, INC. 552   2011-03-24   
817-255 1 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 2 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 3 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 4 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 5 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 6 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 7 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 8 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      
817-255 9 Fort Worth TX FTWOTXEDDS3  9533 SOUTHWESTERN BELL 552      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.