Area Code 779-209 located in SANDWICH, DEKALB, IL, more detail is as below. Place NPA (Numbering Plan Area) : 779 NXX (Local Number Prefix) : 209 City : SANDWICH County : DEKALB State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 8/31/2012 FIPS (Federal Information Processing Standards) : 17037 LATA (Local Access Transport Area) : 358 Rate Center : SANDWICH ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 60548 Other Information NPANXX : 779209 MSA CBSA (Core Based Statistical Area) : Chicago-Naperville-Joliet, IL-IN-WI MSA CBSA Code (Core Based Statistical Area) : 16980 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Overlay : L Company : PEERLESS NETWORK OF ILLINOIS, LLC - IL OCN (Operating Company Number) : 063E Coverage Area Name : SANDWICH Latitude : 41.6522 Longitude : -88.6239 ‹ previous : 779-208 next › : 779-210 Telephone Number List 779-209-0000 ~ 779-209-9999