Area Code 806-937 located in HART, CASTRO, TX, more detail is as below. Place NPA (Numbering Plan Area) : 806 NXX (Local Number Prefix) : 937 City : HART County : CASTRO State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 8/4/2008 FIPS (Federal Information Processing Standards) : 48069 LATA (Local Access Transport Area) : 546 Rate Center : HART ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 79043 Other Information NPANXX : 806937 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX OCN (Operating Company Number) : 0132 Coverage Area Name : HART Latitude : 34.3895 Longitude : -102.1174 ‹ previous : 806-935 next › : 806-938 Telephone Number List 806-937-0000 ~ 806-937-9999