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: WCFLTXRK0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
940-347 A Seymour TX 6271 UNITED STATES CELLULAR - TX 548      
940-631 A Wichita Falls TX 6271 UNITED STATES CELLULAR - TX 548      
940-632 A Wichita Falls TX 6271 UNITED STATES CELLULAR - TX 548      
940-636 A Wichita Falls TX 6271 UNITED STATES CELLULAR - TX 548      
940-732 A Childress TX 6271 UNITED STATES CELLULAR - TX 548      
940-733 A Wichita Falls TX 6271 UNITED STATES CELLULAR - TX 548      
940-838 A Medicine Mound TX 6271 UNITED STATES CELLULAR - TX 548      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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