Area Code 573-943 located in BELLE, MARIES, MO, more detail is as below. Place NPA (Numbering Plan Area) : 573 NXX (Local Number Prefix) : 943 City : BELLE County : MARIES State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 29125 LATA (Local Access Transport Area) : 521 Rate Center : MTSTERLING ZIP Code Count : 9 ZIP Code Frequency : 2 ZIP Code : 65013 Other Information NPANXX : 573943 County Population : 0 Switch CLLI (Common Language Location Identifier) : MTSTMOXADS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINK OCN (Operating Company Number) : 9787 Coverage Area Name : MOUNT STERLING Latitude : 38.4508 Longitude : -91.6332 ‹ previous : 573-943 next › : 573-943 Telephone Number List 573-943-0000 ~ 573-943-9999