Area Code 712-964 located in HILLS, ROCK, IA, more detail is as below. Place NPA (Numbering Plan Area) : 712 NXX (Local Number Prefix) : 964 City : HILLS County : ROCK State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 27133 LATA (Local Access Transport Area) : 630 Rate Center : SO HILLS ZIP Code Count : 3 ZIP Code Frequency : 100 ZIP Code : 56138 Other Information NPANXX : 712964 Switch CLLI (Common Language Location Identifier) : HILSMNXH964 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA OCN (Operating Company Number) : 1405 Coverage Area Name : LARCHWOOD Flags : The State for this record does not match the State for the ZIP Code. To keep with data reporting, the state for the Area Code is used. Latitude : 43.5306 Longitude : -96.3552 ‹ previous : 712-963 next › : 712-973 Telephone Number List 712-964-0000 ~ 712-964-9999