Local Calling Guide

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

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-439 A Fort Worth TX FTWOTXCEDS0  9533 SOUTHWESTERN BELL 552      
817-439 0 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 1 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 2 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 3 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 4 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 5 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 6 Fort Worth TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2007-05-04   
817-439 7 Fort Worth TX   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2007-05-04   
817-439 8 Fort Worth TX   9533 SOUTHWESTERN BELL 552      
817-439 9 Fort Worth TX   792K CHARTER IP ENABLED SERVICES, LLC 552   2013-08-16   

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

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