Area Code 331-444 located in NAPERVILLE, DUPAGE, IL, more detail is as below. Place NPA (Numbering Plan Area) : 331 NXX (Local Number Prefix) : 444 City : NAPERVILLE County : DUPAGE State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 8/4/2010 FIPS (Federal Information Processing Standards) : 17043 LATA (Local Access Transport Area) : 358 Rate Center : NAPERVILLE ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 60563 Other Information NPANXX : 331444 County Population : 0 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 : CYGNUS TELECOMMUNICATIONS CORPORATION - IL OCN (Operating Company Number) : 161F Coverage Area Name : NAPERVILLE Latitude : 41.7746 Longitude : -88.1517 ‹ previous : 331-442 next › : 331-452 Telephone Number List 331-444-0000 ~ 331-444-9999
