Area Code 331-303 located in KANE, KANE, IL, more detail is as below. Place NPA (Numbering Plan Area) : 331 NXX (Local Number Prefix) : 303 City : KANE County : KANE State : IL (Illinois) NXX Intro Version : 4/22/2013 Rate Center : ELBURN ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 331303 County Population : 0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CIBOLO CREEK VENTURES, LLC DBA ROUTEPOINT COMM IL OCN (Operating Company Number) : 479G Latitude : None Longitude : None ‹ previous : 331-302 next › : 331-330 Telephone Number List 331-303-0000 ~ 331-303-9999