Area Code 401-366 located in PORTSMOUTH, NEWPORT, RI, more detail is as below. Place NPA (Numbering Plan Area) : 401 NXX (Local Number Prefix) : 366 City : PORTSMOUTH County : NEWPORT State : RI (Rhode Island) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 44005 LATA (Local Access Transport Area) : 130 Rate Center : PORTSMOUTH ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02871 Other Information NPANXX : 401366 County Population : 0 Switch CLLI (Common Language Location Identifier) : PRVDRI95DS0 MSA CBSA (Core Based Statistical Area) : Providence-New Bedford-Fall River, RI-MA MSA CBSA Code (Core Based Statistical Area) : 39300 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CONVERSENT COMMUNICATIONS OF RHODE ISLAND, LLC OCN (Operating Company Number) : 4054 Coverage Area Name : PORTSMOUTH Latitude : 41.6081 Longitude : -71.2443 ‹ previous : 401-365 next › : 401-367 Telephone Number List 401-366-0000 ~ 401-366-9999