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: HSTNTXHODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-971 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-251 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-262 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-338 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-365 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-461 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-463 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-464 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-465 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-467 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-468 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-647 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-722 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-827 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-932 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-935 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-973 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-984 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-358 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-657 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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