Area Code 308-738 located in ROCKVILLE, SHERMAN, NE, more detail is as below. Place NPA (Numbering Plan Area) : 308 NXX (Local Number Prefix) : 738 City : ROCKVILLE County : SHERMAN State : NE (Nebraska) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 31163 LATA (Local Access Transport Area) : 646 Rate Center : ASHTON ZIP Code Count : 3 ZIP Code Frequency : 2 ZIP Code : 68871 Other Information NPANXX : 308738 County Population : 0 Switch CLLI (Common Language Location Identifier) : ASTNNERBRS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEBRASKA CENTRAL TELEPHONE CO. OCN (Operating Company Number) : 1574 Coverage Area Name : ASHTON Latitude : 41.2475 Longitude : -98.7958 ‹ previous : 308-737 next › : 308-738 Telephone Number List 308-738-0000 ~ 308-738-9999