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: HSTNTXBUDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-258 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-293 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-368 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-493 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-496 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-497 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-509 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-529 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-531 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-544 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-552 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-556 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-558 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-560 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-584 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-588 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-589 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-596 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-597 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-649 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-679 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-721 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-749 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-752 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-754 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-759 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-870 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-899 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-920 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
281-966 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
713-510 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-379 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      
832-486 A Houston Suburban TX 9533 SOUTHWESTERN BELL 560      

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

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