Area Code 816-343 located in SMITHVILLE, CLAY, MO, more detail is as below. Place NPA (Numbering Plan Area) : 816 NXX (Local Number Prefix) : 343 City : SMITHVILLE County : CLAY State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 29047 LATA (Local Access Transport Area) : 524 Rate Center : SMITHVILLE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 64089 Other Information NPANXX : 816343 Switch CLLI (Common Language Location Identifier) : KSCYMOMCDS0 MSA CBSA (Core Based Statistical Area) : Kansas City, MO-KS MSA CBSA Code (Core Based Statistical Area) : 28140 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : GLOBAL CROSSING LOCAL SERVICES, INC.-MO OCN (Operating Company Number) : 4004 Coverage Area Name : SMITHVILLE Latitude : 39.3821 Longitude : -94.5773 ‹ previous : 816-342 next › : 816-344 Telephone Number List 816-343-0000 ~ 816-343-9999