Area Code 712-231 located in HOSPERS, SIOUX, IA, more detail is as below. Place NPA (Numbering Plan Area) : 712 NXX (Local Number Prefix) : 231 City : HOSPERS County : SIOUX State : IA (Iowa) NXX Use Type : Wireless NXX Intro Version : 1998-05-18 FIPS (Federal Information Processing Standards) : 19167 LATA (Local Access Transport Area) : 630 Rate Center : HOSPERS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 51238 Other Information NPANXX : 712231 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : HOSPERS Latitude : 43.0732 Longitude : -95.9068 ‹ previous : 712-230 next › : 712-233 Telephone Number List 712-231-0000 ~ 712-231-9999