Area Code 307-267 located in BUFFALO, JOHNSON, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 267 City : BUFFALO County : JOHNSON State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56019 LATA (Local Access Transport Area) : 654 Rate Center : CASPER ZIP Code Count : 1 ZIP Code Frequency : 9 ZIP Code : 82834 Other Information NPANXX : 307267 County Population : 0 Switch CLLI (Common Language Location Identifier) : CSPRWY12CM1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : CASPER Latitude : 42.8457 Longitude : -106.3246 ‹ previous : 307-267 next › : 307-267 Telephone Number List 307-267-0000 ~ 307-267-9999