Area Code 401-423 located in JAMESTOWN, NEWPORT, RI, more detail is as below. Place NPA (Numbering Plan Area) : 401 NXX (Local Number Prefix) : 423 City : JAMESTOWN County : NEWPORT State : RI (Rhode Island) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 44005 LATA (Local Access Transport Area) : 130 Rate Center : JAMESTOWN ZIP Code Count : 2747 ZIP Code Frequency : 100 ZIP Code : 02835 Other Information NPANXX : 401423 County Population : 0 Switch CLLI (Common Language Location Identifier) : JMTWRINARS1 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 : VERIZON NEW ENGLAND INC. OCN (Operating Company Number) : 9102 Coverage Area Name : JAMESTOWN Latitude : 41.4951 Longitude : -71.3675 ‹ previous : 401-421 next › : 401-424 Telephone Number List 401-423-0000 ~ 401-423-9999