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: HSTNTXOVDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-613 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-680 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-681 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-682 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-683 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-684 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-685 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-686 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-688 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-812 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-936 7 Houston TX 9533 SOUTHWESTERN BELL 560   2009-01-13   
713-936 8 Houston TX 9533 SOUTHWESTERN BELL 560   2009-01-13   
713-956 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-957 8 Houston TX 9533 SOUTHWESTERN BELL 560      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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