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: DLLTTX01IMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
903-357 A Sherman TX 6529 T-MOBILE USA, INC. 552      
903-449 A Bonham TX 5562 METROPCS, INC. 552      
903-624 A Denison TX 5562 METROPCS, INC. 552      
903-651 A Whitesboro TX 6529 T-MOBILE USA, INC. 552      
903-744 A Sherman TX 6529 T-MOBILE USA, INC. 552      
903-819 A Sherman TX 6529 T-MOBILE USA, INC. 552      

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

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