Area Code 217-584 located in ARENZVILLE, CASS, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 584 City : ARENZVILLE County : CASS State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17017 LATA (Local Access Transport Area) : 376 Rate Center : MEREDOSIA ZIP Code Count : 39 ZIP Code Frequency : 7 ZIP Code : 62611 Other Information NPANXX : 217584 County Population : 0 Switch CLLI (Common Language Location Identifier) : MRDSILXCRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1015 Coverage Area Name : MEREDOSIA Latitude : 39.8324 Longitude : -90.5578 ‹ previous : 217-583 next › : 217-584 Telephone Number List 217-584-0000 ~ 217-584-9999