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: 572 [Rate centres in NPA 572] [Dial plan for NPA 572]

NXX: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
572-250 A Oklahoma City OK   6272 UNITED STATES CELLULAR - OK 536   2025-04-28   
572-250 0 Oklahoma City OK   6272 UNITED STATES CELLULAR - OK 536   2025-04-28   
572-250 1 Oklahoma City OK   6272 UNITED STATES CELLULAR - OK 536   2025-04-28   
572-250 8 Oklahoma City OK   6272 UNITED STATES CELLULAR - OK 536   2025-04-28   
572-250 9 Oklahoma City OK   6272 UNITED STATES CELLULAR - OK 536   2025-04-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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