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: STWROK06DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
405-533 A Stillwater OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
405-646 A Carney OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
405-694 A Oklahoma City OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
580-222 A Ardmore OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
580-387 A Tishomingo OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
580-663 A Ringling OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
580-672 A Madill OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      
580-929 A Konawa OK 4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.