Area Code 575-355 located in FORT SUMNER, DE BACA, NM, more detail is as below. Place NPA (Numbering Plan Area) : 575 NXX (Local Number Prefix) : 355 City : FORT SUMNER County : DE BACA State : NM (New Mexico) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 35011 LATA (Local Access Transport Area) : 664 Rate Center : FORTSUMNER ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 88119 Other Information NPANXX : 575355 County Population : 0 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 : FORT SUMNER Latitude : 34.4643 Longitude : -104.2517 ‹ previous : 575-354 next › : 575-356 Telephone Number List 575-355-0000 ~ 575-355-9999