Area Code 305-399 located in MIAMI, MIAMI-DADE, FL, more detail is as below. Place NPA (Numbering Plan Area) : 305 NXX (Local Number Prefix) : 399 City : MIAMI County : MIAMI-DADE State : FL (Florida) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 12086 Rate Center : MIAMI ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 33129 Other Information NPANXX : 305399 County Population : 0 Switch CLLI (Common Language Location Identifier) : MIAMFLBA85E MSA CBSA (Core Based Statistical Area) : Miami-Fort Lauderdale-Pompano Beach, FL MSA CBSA Code (Core Based Statistical Area) : 33100 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 305-399 next › : 305-400 Telephone Number List 305-399-0000 ~ 305-399-9999