Area Code 641-289 located in LAMONI, DECATUR, IA, more detail is as below. Place NPA (Numbering Plan Area) : 641 NXX (Local Number Prefix) : 289 City : LAMONI County : DECATUR State : IA (Iowa) NXX Use Type : Wireless NXX Intro Version : 6/3/2009 FIPS (Federal Information Processing Standards) : 19053 LATA (Local Access Transport Area) : 632 Rate Center : LAMONI ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 50140 Other Information NPANXX : 641289 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : UNITED STATES CELLULAR CORP. - IOWA OCN (Operating Company Number) : 6266 Coverage Area Name : LAMONI Latitude : 40.6232 Longitude : -93.9427 ‹ previous : 641-278 next › : 641-293 Telephone Number List 641-289-0000 ~ 641-289-9999