Area Code 423-324 located in PETROS, MORGAN, TN, more detail is as below. Place NPA (Numbering Plan Area) : 423 NXX (Local Number Prefix) : 324 City : PETROS County : MORGAN State : TN (Tennessee) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 47129 LATA (Local Access Transport Area) : 474 Rate Center : PETROS ZIP Code Count : 114 ZIP Code Frequency : 27 ZIP Code : 37845 Other Information NPANXX : 423324 County Population : 0 Switch CLLI (Common Language Location Identifier) : PTRSTNXARS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : HIGHLAND TELEPHONE COOPERATIVE, INC. - TN OCN (Operating Company Number) : 0565 Coverage Area Name : OLIVER SPRINGS Latitude : 36.0992 Longitude : -84.4427 ‹ previous : 423-323 next › : 423-324 Telephone Number List 423-324-0000 ~ 423-324-9999