Area Code 228-231 located in DIAMONDHEAD, HANCOCK, MS, more detail is as below. Place NPA (Numbering Plan Area) : 228 NXX (Local Number Prefix) : 231 City : DIAMONDHEAD County : HANCOCK State : MS (Mississippi) NXX Use Type : Landline NXX Intro Version : 8/21/2012 FIPS (Federal Information Processing Standards) : 28045 LATA (Local Access Transport Area) : 484 Rate Center : BAYSTLOUIS ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 39525 Other Information NPANXX : 228231 County Population : 0 MSA CBSA (Core Based Statistical Area) : Gulfport-Biloxi, MS MSA CBSA Code (Core Based Statistical Area) : 25060 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MCC TELEPHONY OF THE SOUTH, LLC - MS OCN (Operating Company Number) : 774F Coverage Area Name : BAY ST LOUIS Latitude : 30.3071 Longitude : -89.3349 ‹ previous : 228-230 next › : 228-232 Telephone Number List 228-231-0000 ~ 228-231-9999