Area Code 331-330 located in MONTGOMERY, KENDALL, IL, more detail is as below. Place NPA (Numbering Plan Area) : 331 NXX (Local Number Prefix) : 330 City : MONTGOMERY County : KENDALL State : IL (Illinois) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 17093 LATA (Local Access Transport Area) : 358 Rate Center : OSWEGO ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 60538 Other Information NPANXX : 331330 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 : DENALI SPECTRUM LICENSE, LLC OCN (Operating Company Number) : 701E Coverage Area Name : OSWEGO Latitude : 41.6822 Longitude : -88.3546 ‹ previous : 331-303 next › : 331-332 Telephone Number List 331-330-0000 ~ 331-330-9999