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: HSTNTXMODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-218 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-295 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-314 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-349 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-432 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-592 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-660 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-661 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-662 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-663 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-664 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-665 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-666 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-667 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-668 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-669 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-838 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-839 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-778 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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