Area Code 779-203 located in ROCKFORD, WINNEBAGO, IL, more detail is as below. Place NPA (Numbering Plan Area) : 779 NXX (Local Number Prefix) : 203 City : ROCKFORD County : WINNEBAGO State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 10/13/2011 FIPS (Federal Information Processing Standards) : 17201 LATA (Local Access Transport Area) : 360 Rate Center : ROCKFORD ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 61102 Other Information NPANXX : 779203 MSA CBSA (Core Based Statistical Area) : Rockford, IL MSA CBSA Code (Core Based Statistical Area) : 40420 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Overlay : L Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : ROCKFORD Latitude : 42.2672 Longitude : -89.0999 ‹ previous : 779-202 next › : 779-205 Telephone Number List 779-203-0000 ~ 779-203-9999