Not nobility at all. “Van” just means "of ", indicating where or whom you are from. Over 40 percent of all Dutch surnames are preceded by "van’.
Noble names are indicated by: “van Name tot Othername” or by double names that arent married names.
“Van der Bilt” not noble, just means “of the market”
“van Dam” not noblem, just means " of the dam"
“van Bredevoort” not noble, just means “from the city of Bredevoort”
“van Dam van Bredevoort” probably a family that used to be noble.
" van Dam tot Bredevoort" quite probably noble.