Area Code 774-840 located in CHATHAM, BARNSTABLE, MA, more detail is as below. Place NPA (Numbering Plan Area) : 774 NXX (Local Number Prefix) : 840 City : CHATHAM County : BARNSTABLE State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 2002-08-04 FIPS (Federal Information Processing Standards) : 25001 LATA (Local Access Transport Area) : 128 Rate Center : CHATHAM ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02633 Other Information NPANXX : 774840 Switch CLLI (Common Language Location Identifier) : BOTNMAAZW01 MSA CBSA (Core Based Statistical Area) : Barnstable Town, MA MSA CBSA Code (Core Based Statistical Area) : 12700 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : CHATHAM Latitude : 41.6836 Longitude : -69.9642 ‹ previous : 774-836 next › : 774-847 Telephone Number List 774-840-0000 ~ 774-840-9999