Area Code 307-328 located in WAMSUTTER, SWEETWATER, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 328 City : WAMSUTTER County : SWEETWATER State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56037 LATA (Local Access Transport Area) : 654 Rate Center : RAWLINS ZIP Code Count : 35 ZIP Code Frequency : 4 ZIP Code : 82336 Other Information NPANXX : 307328 County Population : 0 Switch CLLI (Common Language Location Identifier) : RWLNWYMADS0 MSA CBSA (Core Based Statistical Area) : Rock Springs, WY MSA CBSA Code (Core Based Statistical Area) : 40540 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : RAWLINS Latitude : 41.7858 Longitude : -107.2396 ‹ previous : 307-327 next › : 307-328 Telephone Number List 307-328-0000 ~ 307-328-9999