Area Code 904-999 located in JACKSONVILLE, DUVAL, FL, more detail is as below. Place NPA (Numbering Plan Area) : 904 NXX (Local Number Prefix) : 999 City : JACKSONVILLE County : DUVAL State : FL (Florida) NXX Use Type : Landline NXX Intro Version : 8/26/2011 FIPS (Federal Information Processing Standards) : 12031 LATA (Local Access Transport Area) : 452 Rate Center : JACKSONVL ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 32204 Other Information NPANXX : 904999 MSA CBSA (Core Based Statistical Area) : Jacksonville, FL MSA CBSA Code (Core Based Statistical Area) : 27260 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : ASTRO TEL, INC. - FL OCN (Operating Company Number) : 018A Coverage Area Name : JACKSONVILLE Latitude : 30.3290 Longitude : -81.6635 ‹ previous : 904-998 next › : 905-200 Telephone Number List 904-999-0000 ~ 904-999-9999