Area Code 405-817 located in CLEVELAND, CLEVELAND, OK, more detail is as below. Place NPA (Numbering Plan Area) : 405 NXX (Local Number Prefix) : 817 City : CLEVELAND County : CLEVELAND State : OK (Oklahoma) NXX Intro Version : 6/10/2009 Rate Center : NORMAN ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 405817 MSA CBSA (Core Based Statistical Area) : Tulsa, OK MSA CBSA Code (Core Based Statistical Area) : 46140 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 405-816 next › : 405-818 Telephone Number List 405-817-0000 ~ 405-817-9999