"Although it's much harder for others to see your DNS lookups with DoH
   enabled, the websites will still be visible to the DNS server your
   browser is connecting to. Thus, Mozilla says Firefox will offer a
   choice of two trusted DNS providers, Cloudflare and NextDNS, and that
   Cloudflare will be used as the default."

   On 2/26/20 10:00 AM, jim bell wrote:

The Verge: Firefox turns controversial new encryption on by default in the US.
[1]https://www.theverge.com/2020/2/25/21152335/mozilla-firefox-dns-over-https-we
b-privacy-security-encryption

References

   1. https://www.theverge.com/2020/2/25/21152335/mozilla-firefox-dns-over-https-web-privacy-security-encryption