Area Code 774-721 located in WELLESLEY HILLS, NORFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 774 NXX (Local Number Prefix) : 721 City : WELLESLEY HILLS County : NORFOLK State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 2001-10-31 FIPS (Federal Information Processing Standards) : 25021 LATA (Local Access Transport Area) : 128 Rate Center : NATICK ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02481 Other Information NPANXX : 774721 Switch CLLI (Common Language Location Identifier) : MNFDMABPCM0 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 : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : NATICK Latitude : 42.2839 Longitude : -71.3395 ‹ previous : 774-721 next › : 774-722 Telephone Number List 774-721-0000 ~ 774-721-9999