Area Code 423-387 located in CHATTANOOGA, HAMILTON, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 387 City : CHATTANOOGA County : HAMILTON State : TN (Tennessee) NXX Use Type : Landline NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 47065 LATA (Local Access Transport Area) : 472 Rate Center : CHATTNOOGA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 37410 Other Information NPANXX : 423387 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHTGTNSEDS0 MSA CBSA (Core Based Statistical Area) : Chattanooga, TN-GA MSA CBSA Code (Core Based Statistical Area) : 16860 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : METRO BEEPER SERVICE, INC. OCN (Operating Company Number) : 6704 Coverage Area Name : CHATTANOOGA Latitude : 34.9965 Longitude : -85.3298 ‹ previous : 423-387 next › : 423-388 Telephone Number List 423-387-0000 ~ 423-387-9999