English: Specify domains whose DNS should be prefetched by browsers. Include one entry per line, e.g. (https://cdn.domain.com, https://fonts.googleapis.com, https://www.google-ananlytics.com, etc.)
Dutch: Geef domeinen op waarvan de DNS geprefetched moet worden door browsers. Neem één invoer per regel op, bijv. (https://cdn.domain.com, https://fonts.googleapis.com, https://www.google-ananlytics.com, enz.)