Area Code 618-442 located in OLNEY, RICHLAND, IL, more detail is as below. Place NPA (Numbering Plan Area) : 618 NXX (Local Number Prefix) : 442 City : OLNEY County : RICHLAND State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17159 LATA (Local Access Transport Area) : 978 Rate Center : PARKERSBG ZIP Code Count : 67 ZIP Code Frequency : 27 ZIP Code : 62450 Other Information NPANXX : 618442 Switch CLLI (Common Language Location Identifier) : PRBGILXERL0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1036 Coverage Area Name : PARKERSBURG Latitude : 38.5918 Longitude : -88.0586 ‹ previous : 618-441 next › : 618-442 Telephone Number List 618-442-0000 ~ 618-442-9999