Area Code 307-276 located in BIG PINEY, SUBLETTE, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 276 City : BIG PINEY County : SUBLETTE State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56035 LATA (Local Access Transport Area) : 654 Rate Center : BIG PINEY ZIP Code Count : 980 ZIP Code Frequency : 98 ZIP Code : 83113 Other Information NPANXX : 307276 County Population : 0 Switch CLLI (Common Language Location Identifier) : BGPNWYXCDS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK OCN (Operating Company Number) : 2299 Coverage Area Name : BIG PINEY Latitude : 42.5416 Longitude : -110.1177 ‹ previous : 307-275 next › : 307-277 Telephone Number List 307-276-0000 ~ 307-276-9999