Area Code 812-273 located in DUPONT, JEFFERSON, IN, more detail is as below. Place NPA (Numbering Plan Area) : 812 NXX (Local Number Prefix) : 273 City : DUPONT County : JEFFERSON State : IN (Indiana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 18077 LATA (Local Access Transport Area) : 338 Rate Center : MADISON ZIP Code Count : 106 ZIP Code Frequency : 4 ZIP Code : 47231 Other Information NPANXX : 812273 Switch CLLI (Common Language Location Identifier) : MDSNINXARS0 MSA CBSA (Core Based Statistical Area) : Madison, IN MSA CBSA Code (Core Based Statistical Area) : 31500 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IN OCN (Operating Company Number) : 0779 Coverage Area Name : MADISON Latitude : 38.7340 Longitude : -85.3852 ‹ previous : 812-272 next › : 812-273 Telephone Number List 812-273-0000 ~ 812-273-9999