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: OKCYOKCEXXY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
405-225 A Oklahoma City OK 516C AT&T CORP. 536      
405-367 A Bethany OK 516C AT&T CORP. 536      
580-417 A Fairmont OK 516C AT&T CORP. 536      
580-453 A Ada OK 516C AT&T CORP. 536      
580-489 A Fort Towson OK 516C AT&T CORP. 536      
580-780 A Bennington OK 516C AT&T CORP. 536      
580-952 A Hitchcock OK 516C AT&T CORP. 536      

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

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