Area Code 228-240 located in BILOXI, HARRISON, MS, more detail is as below. Place NPA (Numbering Plan Area) : 228 NXX (Local Number Prefix) : 240 City : BILOXI County : HARRISON State : MS (Mississippi) NXX Use Type : Wireless NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 28047 Rate Center : BILOXI ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 39532 Other Information NPANXX : 228240 County Population : 0 Switch CLLI (Common Language Location Identifier) : GLPTMS550MD 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 Latitude : None Longitude : None ‹ previous : 228-239 next › : 228-240 Telephone Number List 228-240-0000 ~ 228-240-9999