Area Code 920-999 located in PLYMOUTH, SHEBOYGAN, WI, more detail is as below. Place NPA (Numbering Plan Area) : 920 NXX (Local Number Prefix) : 999 City : PLYMOUTH County : SHEBOYGAN State : WI (Wisconsin) NXX Use Type : Landline NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 55117 LATA (Local Access Transport Area) : 356 Rate Center : ST CLOUD ZIP Code Count : 41 ZIP Code Frequency : 10 ZIP Code : 53073 Other Information NPANXX : 920999 Switch CLLI (Common Language Location Identifier) : STCDWIXARS0 MSA CBSA (Core Based Statistical Area) : Sheboygan, WI MSA CBSA Code (Core Based Statistical Area) : 43100 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH INC. - WI OCN (Operating Company Number) : 0886 Coverage Area Name : SAINT CLOUD Latitude : 43.8218 Longitude : -88.1659 ‹ previous : 920-998 next › : 920-999 Telephone Number List 920-999-0000 ~ 920-999-9999