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: HSTNTXMCDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-652 A Houston TX 9533 SOUTHWESTERN BELL 560      
281-669 A Houston TX 9533 SOUTHWESTERN BELL 560      
281-936 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-245 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-363 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-383 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-384 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-391 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-394 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-442 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-500 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-512 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-558 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-563 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-566 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-578 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-610 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-677 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-704 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-745 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-770 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-790 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-791 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-792 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-793 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-794 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-795 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-796 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-797 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-798 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-799 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-852 A Houston TX 9533 SOUTHWESTERN BELL 560      
713-873 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-354 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-355 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-398 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-822 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-824 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-825 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-826 A Houston TX 9533 SOUTHWESTERN BELL 560      
832-828 A Houston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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