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: HSTNTXPRDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-219 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-270 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-271 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-272 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-414 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-541 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-596 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-771 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-772 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-773 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-774 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-776 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-777 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-778 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-981 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-988 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-995 A Houston TX 9533 SOUTHWESTERN BELL 560      

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

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