Area Code 502-421 located in LOUISVILLE, JEFFERSON, KY, more detail is as below. Place NPA (Numbering Plan Area) : 502 NXX (Local Number Prefix) : 421 City : LOUISVILLE County : JEFFERSON State : KY (Kentucky) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 21111 LATA (Local Access Transport Area) : 462 Rate Center : LOUISVILLE ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 40242 Other Information NPANXX : 502421 Switch CLLI (Common Language Location Identifier) : LSVLKYWEDS0 MSA CBSA (Core Based Statistical Area) : Louisville/Jefferson County, KY-IN MSA CBSA Code (Core Based Statistical Area) : 31140 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERICAN MESSAGING (AM), INC. OCN (Operating Company Number) : 9748 Coverage Area Name : LOUISVILLE Latitude : 38.2834 Longitude : -85.5860 ‹ previous : 502-420 next › : 502-422 Telephone Number List 502-421-0000 ~ 502-421-9999