Area Code 423-398 located in KINGSPORT, SULLIVAN, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 398 City : KINGSPORT County : SULLIVAN State : TN (Tennessee) NXX Use Type : Wireless NXX Intro Version : 3/1/2011 FIPS (Federal Information Processing Standards) : 47163 LATA (Local Access Transport Area) : 956 Rate Center : KINGSPORT ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 37665 Other Information NPANXX : 423398 County Population : 0 MSA CBSA (Core Based Statistical Area) : Kingsport-Bristol-Bristol, TN-VA MSA CBSA Code (Core Based Statistical Area) : 28700 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : KINGSPORT Latitude : 36.5488 Longitude : -82.5574 ‹ previous : 423-397 next › : 423-399 Telephone Number List 423-398-0000 ~ 423-398-9999