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.
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Switch: TXRKTXXA9MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
903-933 4 DeKalb TX 6529 T-MOBILE USA, INC. 554      
903-933 5 DeKalb TX 6529 T-MOBILE USA, INC. 554      
903-933 6 DeKalb TX 6529 T-MOBILE USA, INC. 554      
903-933 7 DeKalb TX 6529 T-MOBILE USA, INC. 554      
903-933 8 DeKalb TX 6529 T-MOBILE USA, INC. 554      
903-933 9 DeKalb TX 6529 T-MOBILE USA, INC. 554      

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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