Area Code 217-275 located in DENNISON, CLARK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 275 City : DENNISON County : CLARK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17023 LATA (Local Access Transport Area) : 938 Rate Center : VERMILION ZIP Code Count : 25 ZIP Code Frequency : 7 ZIP Code : 62423 Other Information NPANXX : 217275 County Population : 0 Switch CLLI (Common Language Location Identifier) : VRMLILXCRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1015 Coverage Area Name : PARIS Latitude : 39.5790 Longitude : -87.5904 ‹ previous : 217-275 next › : 217-275 Telephone Number List 217-275-0000 ~ 217-275-9999