Area Code 423-580 located in HARRISON, HAMILTON, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 580 City : HARRISON County : HAMILTON State : TN (Tennessee) NXX Use Type : Wireless NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 47065 LATA (Local Access Transport Area) : 472 Rate Center : CHATTNOOGA ZIP Code Count : 1 ZIP Code Frequency : 25 ZIP Code : 37341 Other Information NPANXX : 423580 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHTGTNGZ0MD 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 : NEW CINGULAR WIRELESS PCS, LLC - GA OCN (Operating Company Number) : 6214 Coverage Area Name : CHATTANOOGA Latitude : 35.0413 Longitude : -85.3124 ‹ previous : 423-580 next › : 423-581 Telephone Number List 423-580-0000 ~ 423-580-9999