Area Code 240-212 located in OAKLAND, GARRETT, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 212 City : OAKLAND County : GARRETT State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 2000-06-13 FIPS (Federal Information Processing Standards) : 24023 LATA (Local Access Transport Area) : 240 Rate Center : OAKLAND ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 21550 Other Information NPANXX : 240212 County Population : 0 Switch CLLI (Common Language Location Identifier) : MTARMDSD00T Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : CORE COMMUNICATIONS, INC. - MD OCN (Operating Company Number) : 2593 Coverage Area Name : OAKLAND Latitude : 39.4080 Longitude : -79.4113 ‹ previous : 240-210 next › : 240-213 Telephone Number List 240-212-0000 ~ 240-212-9999