Area Code 307-717 located in DOUGLAS, CONVERSE, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 717 City : DOUGLAS County : CONVERSE State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 2003-08-31 FIPS (Federal Information Processing Standards) : 56009 LATA (Local Access Transport Area) : 654 Rate Center : DOUGLAS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 82633 Other Information NPANXX : 307717 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNVWWYXCCM2 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : UNION TELEPHONE COMPANY OCN (Operating Company Number) : 013B Coverage Area Name : DOUGLAS Latitude : 42.7558 Longitude : -105.3659 ‹ previous : 307-716 next › : 307-718 Telephone Number List 307-717-0000 ~ 307-717-9999