Area Code 307-217 located in BUFFALO, JOHNSON, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 217 City : BUFFALO County : JOHNSON State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 56019 LATA (Local Access Transport Area) : 654 Rate Center : BUFFALO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 82834 Other Information NPANXX : 307217 County Population : 0 Switch CLLI (Common Language Location Identifier) : SHRDWYCV0MD 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 : BUFFALO Latitude : 44.3474 Longitude : -106.6897 ‹ previous : 307-216 next › : 307-218 Telephone Number List 307-217-0000 ~ 307-217-9999