Area Code 423-256 located in MOUNT CARMEL, HAWKINS, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 256 City : MOUNT CARMEL County : HAWKINS State : TN (Tennessee) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 47073 LATA (Local Access Transport Area) : 956 Rate Center : CHURCHHILL ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 37645 Other Information NPANXX : 423256 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHHLTNXARS0 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 : UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN OCN (Operating Company Number) : 4510 Coverage Area Name : CHURCH HILL Latitude : 36.5213 Longitude : -82.7112 ‹ previous : 423-255 next › : 423-257 Telephone Number List 423-256-0000 ~ 423-256-9999