Catalysis of the reaction: dolichyl diphosphooligosaccharide + protein L-asparagine = dolichyl diphosphate + a glycoprotein with the oligosaccharide chain attached by glycosylamine linkage to protein L-asparagine.
EC:2.4.99.18; MetaCyc:RXN-16761; RHEA:22980; Reactome:R-HSA-9694793 "Spike protein gets N-glycosylated"; reactome:R-HSA-446209 "Transfer of N-glycan to the protein"