Area Code 305-289 located in SUMMERLAND KEY, MONROE, FL, more detail is as below. Place NPA (Numbering Plan Area) : 305 NXX (Local Number Prefix) : 289 City : SUMMERLAND KEY County : MONROE State : FL (Florida) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 12087 LATA (Local Access Transport Area) : 460 Rate Center : KEYS ZIP Code Count : 58 ZIP Code Frequency : 2 ZIP Code : 33042 Other Information NPANXX : 305289 County Population : 0 Switch CLLI (Common Language Location Identifier) : MRTHFLVERS0 MSA CBSA (Core Based Statistical Area) : Key West, FL MSA CBSA Code (Core Based Statistical Area) : 28580 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 : MARATHON Latitude : 24.7336 Longitude : -81.0165 ‹ previous : 305-289 next › : 305-289 Telephone Number List 305-289-0000 ~ 305-289-9999