Area Code 303-419 located in LITTLETON, JEFFERSON, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 419 City : LITTLETON County : JEFFERSON State : CO (Colorado) NXX Use Type : Wireless NXX Intro Version : 1994-09-11 FIPS (Federal Information Processing Standards) : 08059 LATA (Local Access Transport Area) : 656 Rate Center : DENVER ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 80128 Other Information NPANXX : 303419 County Population : 0 Switch CLLI (Common Language Location Identifier) : ENWDCOXPCM0 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 : 303-418 next › : 303-419 Telephone Number List 303-419-0000 ~ 303-419-9999