Area Code 423-290 located in CHATTANOOGA, HAMILTON, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 290 City : CHATTANOOGA County : HAMILTON State : TN (Tennessee) NXX Use Type : Wireless NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 47065 LATA (Local Access Transport Area) : 472 Rate Center : CHATTNOOGA ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 37408 Other Information NPANXX : 423290 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHTGTNNSX1X 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 : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN OCN (Operating Company Number) : 6673 Coverage Area Name : CHATTANOOGA Latitude : 35.0413 Longitude : -85.3124 ‹ previous : 423-289 next › : 423-290 Telephone Number List 423-290-0000 ~ 423-290-9999