Area Code 928-321 located in SAINT JOHNS, APACHE, AZ, more detail is as below. Place NPA (Numbering Plan Area) : 928 NXX (Local Number Prefix) : 321 City : SAINT JOHNS County : APACHE State : AZ (Arizona) NXX Use Type : Wireless NXX Intro Version : 2006-06-01 FIPS (Federal Information Processing Standards) : 04001 LATA (Local Access Transport Area) : 666 Rate Center : ST JOHNS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 85936 Other Information NPANXX : 928321 Switch CLLI (Common Language Location Identifier) : SHLWAZ01CM1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : No Company : SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA OCN (Operating Company Number) : 4146 Coverage Area Name : ST JOHNS Latitude : 34.4988 Longitude : -109.3733 ‹ previous : 928-319 next › : 928-322 Telephone Number List 928-321-0000 ~ 928-321-9999