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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NPA: 350 [Rate centres in NPA 350] [Dial plan for NPA 350]

NXX: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-233 A Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-12-21   
350-233 8 Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-12-21   
350-233 9 Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-12-21   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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