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: HSTNTXNADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-215 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-232 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-350 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-355 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-407 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-438 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-469 A Houston TX 9533 SOUTHWESTERN BELL 560   2008-10-12   
713-479 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-543 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-544 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-548 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-561 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-572 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-625 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-626 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-627 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-629 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-693 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-843 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-881 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-892 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-985 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-989 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-238 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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