Area Code 712-400 located in ROCK RAPIDS, LYON, IA, more detail is as below. Place NPA (Numbering Plan Area) : 712 NXX (Local Number Prefix) : 400 City : ROCK RAPIDS County : LYON State : IA (Iowa) NXX Use Type : Wireless NXX Intro Version : 10/18/2006 FIPS (Federal Information Processing Standards) : 19119 LATA (Local Access Transport Area) : 630 Rate Center : ROCKRAPIDS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 51246 Other Information NPANXX : 712400 Switch CLLI (Common Language Location Identifier) : SRBLIAXOCM0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : LONG LINES WIRELESS, LLC OCN (Operating Company Number) : 819D Coverage Area Name : ROCK RAPIDS Latitude : 43.4262 Longitude : -96.1757 ‹ previous : 712-396 next › : 712-404 Telephone Number List 712-400-0000 ~ 712-400-9999