Area Code 405-688 located in OKLAHOMA CITY, OKLAHOMA, OK, more detail is as below. Place NPA (Numbering Plan Area) : 405 NXX (Local Number Prefix) : 688 City : OKLAHOMA CITY County : OKLAHOMA State : OK (Oklahoma) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 40109 LATA (Local Access Transport Area) : 536 Rate Center : OKLA CITY ZIP Code Count : 55 ZIP Code Frequency : 4 ZIP Code : 73128 Other Information NPANXX : 405688 Switch CLLI (Common Language Location Identifier) : OKCYOKMUDS0 MSA CBSA (Core Based Statistical Area) : Oklahoma City, OK MSA CBSA Code (Core Based Statistical Area) : 36420 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : OKLAHOMA CITY Latitude : 35.4210 Longitude : -97.5641 ‹ previous : 405-688 next › : 405-688 Telephone Number List 405-688-0000 ~ 405-688-9999