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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-535 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 5 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-639 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 4 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 6 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 7 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 8 Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 9 Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-831 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-834 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-834 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-834 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-834 3 Houston TX 9533 SOUTHWESTERN BELL 560      
713-874 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-874 0 Houston TX 9533 SOUTHWESTERN BELL 560      
713-874 1 Houston TX 9533 SOUTHWESTERN BELL 560      
713-874 2 Houston TX 9533 SOUTHWESTERN BELL 560      
713-874 3 Houston TX 9533 SOUTHWESTERN BELL 560      

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

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