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.

NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 451

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-451 A Dougherty OK ENIDOKKI0MD  6272 UNITED STATES CELLULAR - OK 536      
580-451 0 Dougherty OK ENIDOKKI0MD  6272 UNITED STATES CELLULAR - OK 536      
580-451 1 Dougherty OK   6529 T-MOBILE USA, INC. 536   2025-05-05   
580-451 5 Dougherty OK   5562 METROPCS, INC. 536   2025-05-08   

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

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