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: SENCMOXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
417-364 A Goodman MO 1886 GOODMAN TEL. CO. 522      
417-436 A Lanagan MO 1886 GOODMAN TEL. CO. 522      
417-475 A Noel MO 1866 OZARK TELEPHONE COMPANY 522      
417-762 A South West City MO 1866 OZARK TELEPHONE COMPANY 522      
417-775 A Tiff City MO 1945 SENECA TEL. CO. 522      
417-776 A Seneca MO 1945 SENECA TEL. CO. 522      
479-822 A South West City AR 1866 OZARK TELEPHONE COMPANY 522      
918-666 A West Seneca OK 1945 SENECA TEL. CO. 522      
918-854 A South West City OK 1866 OZARK TELEPHONE COMPANY 522      
918-985 A Tiff City OK 1945 SENECA TEL. CO. 522      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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