Area Code 305-857 located in MIAMI, MIAMI-DADE, FL, more detail is as below. Place NPA (Numbering Plan Area) : 305 NXX (Local Number Prefix) : 857 City : MIAMI County : MIAMI-DADE State : FL (Florida) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 12086 LATA (Local Access Transport Area) : 460 Rate Center : MIAMI ZIP Code Count : 283 ZIP Code Frequency : 30 ZIP Code : 33129 Other Information NPANXX : 305857 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 Company : BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL OCN (Operating Company Number) : 9417 Coverage Area Name : MIAMI Latitude : 25.7545 Longitude : -80.2213 ‹ previous : 305-857 next › : 305-858 Telephone Number List 305-857-0000 ~ 305-857-9999