Area Code 303-946 located in LITTLETON, JEFFERSON, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 946 City : LITTLETON County : JEFFERSON State : CO (Colorado) NXX Use Type : Wireless NXX Intro Version : 1997-01-11 FIPS (Federal Information Processing Standards) : 08059 LATA (Local Access Transport Area) : 656 Rate Center : DENVER ZIP Code Count : 2 ZIP Code Frequency : 17 ZIP Code : 80127 Other Information NPANXX : 303946 County Population : 0 Switch CLLI (Common Language Location Identifier) : ENWDCO69CM1 MSA CBSA (Core Based Statistical Area) : Denver-Aurora, CO MSA CBSA Code (Core Based Statistical Area) : 19740 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : DENVER Latitude : 39.7454 Longitude : -105.0512 ‹ previous : 303-945 next › : 303-946 Telephone Number List 303-946-0000 ~ 303-946-9999