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: DLLTTX01HMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
903-348 A Sulphur Springs TX 5562 METROPCS, INC. 552      
903-366 A Commerce TX 5562 METROPCS, INC. 552      
940-206 A Denton TX 5562 METROPCS, INC. 552      
940-300 A Denton TX 5562 METROPCS, INC. 552      
940-344 A Lake Dallas TX 6529 T-MOBILE USA, INC. 552      
940-363 A Lake Dallas TX 6529 T-MOBILE USA, INC. 552      
940-364 A Denton TX 6529 T-MOBILE USA, INC. 552   2024-01-11   
940-465 A Denton TX 5562 METROPCS, INC. 552      
940-493 A Denton TX 6529 T-MOBILE USA, INC. 552      
940-594 A Denton TX 6529 T-MOBILE USA, INC. 552      
940-595 A Denton TX 6529 T-MOBILE USA, INC. 552      
940-597 A Denton TX 6529 T-MOBILE USA, INC. 552      
940-629 A Denton TX 6529 T-MOBILE USA, INC. 552      
940-902 A Gainesville TX 5562 METROPCS, INC. 552      

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

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