If those are websites, then no. All websites are opened within my browser. The keyword thing applies only to apps.

My browser (firefox) has DNS over HTTPS built in. So every request goes to cloudflare-dns.com.

My router only sees these requests when I use Firefox - mozilla.cloudflare-dns.com

I use uBlock Origin in Firefox. So I can control whatever I want within the browser.

This a very good approach to adblock on a whole network.