Area Code 351-206 located in ROCKPORT, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 351 NXX (Local Number Prefix) : 206 City : ROCKPORT County : ESSEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1/8/2013 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : ROCKPORT ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 01966 Other Information NPANXX : 351206 County Population : 0 MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA OCN (Operating Company Number) : 268F Coverage Area Name : ROCKPORT Latitude : 42.6589 Longitude : -70.6215 ‹ previous : 351-205 next › : 351-814 Telephone Number List 351-206-0000 ~ 351-206-9999