Area Code 774-447 located in VINEYARD HAVEN, DUKES, MA, more detail is as below. Place NPA (Numbering Plan Area) : 774 NXX (Local Number Prefix) : 447 City : VINEYARD HAVEN County : DUKES State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2002-05-01 FIPS (Federal Information Processing Standards) : 25007 LATA (Local Access Transport Area) : 128 Rate Center : VINEYRDHVN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02568 Other Information NPANXX : 774447 Switch CLLI (Common Language Location Identifier) : BDFRMAAWDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : RNK, INC. OCN (Operating Company Number) : 8700 Coverage Area Name : VINEYARD HAVEN Latitude : 41.4507 Longitude : -70.6051 ‹ previous : 774-444 next › : 774-449 Telephone Number List 774-447-0000 ~ 774-447-9999