Area Code 507-855 located in HILLS, ROCK, MN, more detail is as below. Place NPA (Numbering Plan Area) : 507 NXX (Local Number Prefix) : 855 City : HILLS County : ROCK State : MN (Minnesota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 27133 LATA (Local Access Transport Area) : 620 Rate Center : STEEN ZIP Code Count : 4 ZIP Code Frequency : 3 ZIP Code : 56138 Other Information NPANXX : 507855 Switch CLLI (Common Language Location Identifier) : STENMNXSRS8 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - MN OCN (Operating Company Number) : 1406 Coverage Area Name : STEEN Latitude : 43.5556 Longitude : -96.2389 ‹ previous : 507-854 next › : 507-855 Telephone Number List 507-855-0000 ~ 507-855-9999