Area Code 520-236 located in SIERRA VISTA, COCHISE, AZ, more detail is as below. Place NPA (Numbering Plan Area) : 520 NXX (Local Number Prefix) : 236 City : SIERRA VISTA County : COCHISE State : AZ (Arizona) NXX Use Type : Landline NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 04003 LATA (Local Access Transport Area) : 668 Rate Center : SIERRAVIST ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 85650 Other Information NPANXX : 520236 County Population : 0 Switch CLLI (Common Language Location Identifier) : TCSNAZMARMD MSA CBSA (Core Based Statistical Area) : Sierra Vista-Douglas, AZ MSA CBSA Code (Core Based Statistical Area) : 43420 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : No Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : SIERRA VISTA Latitude : 31.5560 Longitude : -110.3000 ‹ previous : 520-235 next › : 520-236 Telephone Number List 520-236-0000 ~ 520-236-9999