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: LWTNOKTBZMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-315 A Sterling OK 258F WICHITA ONLINE, INC. - OK 536      
580-350 A Lawton OK 258F WICHITA ONLINE, INC. - OK 536      
580-586 A Waurika OK 258F WICHITA ONLINE, INC. - OK 536      
580-717 A Roosevelt OK 258F WICHITA ONLINE, INC. - OK 536      

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

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