Area Code 417-778 located in ALTON, OREGON, MO, more detail is as below. Place NPA (Numbering Plan Area) : 417 NXX (Local Number Prefix) : 778 City : ALTON County : OREGON State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 29149 LATA (Local Access Transport Area) : 522 Rate Center : ALTON ZIP Code Count : 1024 ZIP Code Frequency : 99 ZIP Code : 65606 Other Information NPANXX : 417778 County Population : 0 Switch CLLI (Common Language Location Identifier) : ALTNMOXARS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINK OCN (Operating Company Number) : 9787 Coverage Area Name : ALTON Latitude : 36.6978 Longitude : -91.4016 ‹ previous : 417-777 next › : 417-779 Telephone Number List 417-778-0000 ~ 417-778-9999