Mozilla Connect

Before Firefox, I used Vivaldi Browser and I still used to them left and down status bar. Left in Vivaldi had shortcut to bookmarks, history, downloaded files etc. and down status bar had information about website for example informtion where link le...

Is it possible to add new DoW providers to Firefox? I know a few besides the default ones;https://dns.adguard.com/dns-queryhttps://doh.opendns.com/dns-queryhttps://doh.cleanbrowsing.org/doh/security-filterhttps://dns.quad9.net/dns-query