Cloudflare is the default DoH provider for Firefox only in the US. NextDNS is another option in the the Firefox preferences UI and more options (such as Comcast

Cloudflare is the default DoH provider for Firefox only in the US. NextDNS is another option in the the Firefox preferences UI and more options (such as Comcast) are coming soon in the US and internationally. You can also specify a custom DoH provider URL: https://support.mozilla.org/en-US/kb/firefox-dns-over-https#w_switching-providers https://support.mozilla.org/en-US/kb/firefox-dns-over-https#...