Area Code 423-487 located in NEWPORT, COCKE, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 487 City : NEWPORT County : COCKE State : TN (Tennessee) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 47029 LATA (Local Access Transport Area) : 474 Rate Center : NEWPORT ZIP Code Count : 76 ZIP Code Frequency : 4 ZIP Code : 37821 Other Information NPANXX : 423487 County Population : 0 Switch CLLI (Common Language Location Identifier) : HRFRTNMARS0 MSA CBSA (Core Based Statistical Area) : Newport, TN MSA CBSA Code (Core Based Statistical Area) : 35460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL OCN (Operating Company Number) : 9419 Coverage Area Name : HARTFORD Latitude : 35.8165 Longitude : -83.1462 ‹ previous : 423-487 next › : 423-487 Telephone Number List 423-487-0000 ~ 423-487-9999