Area Code 307-746 located in NEWCASTLE, WESTON, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 746 City : NEWCASTLE County : WESTON State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56045 LATA (Local Access Transport Area) : 654 Rate Center : NEWCASTLE ZIP Code Count : 2130 ZIP Code Frequency : 99 ZIP Code : 82701 Other Information NPANXX : 307746 County Population : 0 Switch CLLI (Common Language Location Identifier) : NWCSWYXCDS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : RT COMMUNICATIONS OCN (Operating Company Number) : 3410 Coverage Area Name : NEWCASTLE Latitude : 43.8528 Longitude : -104.2006 ‹ previous : 307-745 next › : 307-747 Telephone Number List 307-746-0000 ~ 307-746-9999