Area Code 575-421 located in ILFELD, SAN MIGUEL, NM, more detail is as below. Place NPA (Numbering Plan Area) : 575 NXX (Local Number Prefix) : 421 City : ILFELD County : SAN MIGUEL State : NM (New Mexico) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 35047 LATA (Local Access Transport Area) : 664 Rate Center : EL VALLE ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 87538 Other Information NPANXX : 575421 County Population : 0 MSA CBSA (Core Based Statistical Area) : Las Vegas, NM MSA CBSA Code (Core Based Statistical Area) : 29780 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : E.N.M.R. TELEPHONE COOPERATIVE OCN (Operating Company Number) : 2262 Coverage Area Name : RIBERA Latitude : 35.3151 Longitude : -105.4030 ‹ previous : 575-420 next › : 575-422 Telephone Number List 575-421-0000 ~ 575-421-9999