Area Code 712-243 located in ATLANTIC, CASS, IA, more detail is as below. Place NPA (Numbering Plan Area) : 712 NXX (Local Number Prefix) : 243 City : ATLANTIC County : CASS State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 19029 LATA (Local Access Transport Area) : 644 Rate Center : ATLANTIC ZIP Code Count : 3785 ZIP Code Frequency : 100 ZIP Code : 50022 Other Information NPANXX : 712243 Switch CLLI (Common Language Location Identifier) : ATLTIATCDS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9631 Coverage Area Name : ATLANTIC Latitude : 41.4019 Longitude : -95.0116 ‹ previous : 712-242 next › : 712-244 Telephone Number List 712-243-0000 ~ 712-243-9999