Area Code 505-439 located in ALAMOGORDO, OTERO, NM, more detail is as below. Place NPA (Numbering Plan Area) : 505 NXX (Local Number Prefix) : 439 City : ALAMOGORDO County : OTERO State : NM (New Mexico) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 35035 Rate Center : ALAMOGORDO ZIP Code Count : 1742 ZIP Code Frequency : 93 ZIP Code : 88310 Other Information NPANXX : 505439 Switch CLLI (Common Language Location Identifier) : ALMGNMMADS0 MSA CBSA (Core Based Statistical Area) : Alamogordo, NM MSA CBSA Code (Core Based Statistical Area) : 10460 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 505-439 next › : 505-440 Telephone Number List 505-439-0000 ~ 505-439-9999