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      
713-219 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-219 8 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      
713-448 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-448 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-456 4 Houston TX 9533 SOUTHWESTERN BELL 560   2002-11-30   
713-456 5 Houston TX 9533 SOUTHWESTERN BELL 560   2002-11-30   
713-456 6 Houston TX 9533 SOUTHWESTERN BELL 560   2002-11-30   
713-456 8 Houston TX 9533 SOUTHWESTERN BELL 560   2002-11-30   
713-484 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-484 8 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      
713-779 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-779 8 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: Wed, 18 Jun 2025 02:30:00 UTC

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