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: HSTNTXSUDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-243 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-260 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-266 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-267 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-268 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-273 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-278 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-334 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-339 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-361 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-430 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-435 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-458 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-532 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-532 0 Houston TX 9533 SOUTHWESTERN BELL 560      

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Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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