Area Code 563-492 located in DORCHESTER, ALLAMAKEE, IA, more detail is as below. Place NPA (Numbering Plan Area) : 563 NXX (Local Number Prefix) : 492 City : DORCHESTER County : ALLAMAKEE State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 19005 LATA (Local Access Transport Area) : 620 Rate Center : SOSPGGROVE ZIP Code Count : 54 ZIP Code Frequency : 92 ZIP Code : 52140 Other Information NPANXX : 563492 County Population : 0 Switch CLLI (Common Language Location Identifier) : SPGVMNXSDS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SPRING GROVE COMMUNICATIONS OCN (Operating Company Number) : 1485 Coverage Area Name : DORCHESTER Latitude : 43.5593 Longitude : -91.6385 ‹ previous : 563-492 next › : 563-495 Telephone Number List 563-492-0000 ~ 563-492-9999