Area Code 423-328 located in JOHNSON CITY, WASHINGTON, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 328 City : JOHNSON CITY County : WASHINGTON State : TN (Tennessee) NXX Use Type : Landline NXX Intro Version : 2/19/2008 FIPS (Federal Information Processing Standards) : 47179 LATA (Local Access Transport Area) : 956 Rate Center : JOHNSON CY ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 37604 Other Information NPANXX : 423328 County Population : 0 MSA CBSA (Core Based Statistical Area) : Johnson City, TN MSA CBSA Code (Core Based Statistical Area) : 27740 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : COMCAST PHONE OF TENNESSEE, LLC - TN OCN (Operating Company Number) : 408D Coverage Area Name : JOHNSON CITY Latitude : 36.3153 Longitude : -82.3530 ‹ previous : 423-327 next › : 423-329 Telephone Number List 423-328-0000 ~ 423-328-9999