Area Code 712-250 located in ATLANTIC, CASS, IA, more detail is as below. Place NPA (Numbering Plan Area) : 712 NXX (Local Number Prefix) : 250 City : ATLANTIC County : CASS State : IA (Iowa) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 19029 LATA (Local Access Transport Area) : 644 Rate Center : ATLANTIC ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 50022 Other Information NPANXX : 712250 Switch CLLI (Common Language Location Identifier) : ATLTIAAC0MD 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 : ATLANTIC Latitude : 41.4061 Longitude : -95.0092 ‹ previous : 712-249 next › : 712-251 Telephone Number List 712-250-0000 ~ 712-250-9999