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: HSTNTXWEDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-209 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-230 A Westfield EMS TX 9533 SOUTHWESTERN BELL 560      
281-231 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-233 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-443 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-742 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-784 A Westfield TX 9533 SOUTHWESTERN BELL 560      
281-821 A Westfield TX 9533 SOUTHWESTERN BELL 560      
713-879 A Westfield TX 9533 SOUTHWESTERN BELL 560      
832-957 A Westfield TX 9533 SOUTHWESTERN BELL 560      

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

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