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: HSTNTXUNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-293 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-426 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-802 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-803 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-861 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-862 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-863 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-864 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-865 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-866 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-867 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-868 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-869 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-880 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-618 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-673 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.