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: HSTNTXMCDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-770 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-790 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-792 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-795 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-796 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-798 A Houston TX 9533 SOUTHWESTERN BELL 560      

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

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