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: HSTNTXCADS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-315 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-368 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-437 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-483 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-483 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-546 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-547 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-588 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-588 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-632 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-755 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-836 3 Houston TX 9533 SOUTHWESTERN BELL 560   2011-01-14   
713-837 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-837 9 Houston TX 9533 SOUTHWESTERN BELL 560      
832-239 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-239 1 Houston TX 9533 SOUTHWESTERN BELL 560      
832-239 3 Houston TX 9533 SOUTHWESTERN BELL 560      
832-239 4 Houston TX 9533 SOUTHWESTERN BELL 560      
832-239 6 Houston TX 9533 SOUTHWESTERN BELL 560      
832-393 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-394 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-395 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-830 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-830 0 Houston TX 9533 SOUTHWESTERN BELL 560      
832-927 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-927 0 Houston TX 9533 SOUTHWESTERN BELL 560   2014-08-22   

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

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