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: HSTNTXJADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-284 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-285 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-342 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-348 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-424 A Houston TX 8682 FASTADS, INC. 560      
713-520 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-521 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-522 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-523 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-524 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-525 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-526 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-527 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-528 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-529 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-533 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-535 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-620 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-630 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-639 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-737 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-807 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      
713-874 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-942 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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