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: DVPTOKXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
918-368 A Kendrick OK 1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      
918-377 A Davenport OK 1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      
918-866 A Sparks OK 1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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