Not all DNS records are Pulled - Cloudflare Community
2019/05/26 ... Records created on Cloudflare generally propagate Globally in under 30 seconds. It is likely a caching issue with the DNS server you have ...
https://community.cloudflare.com/t/not-all-dns-records-are-pulled/86107Introducing DNS Resolver for Tor - The Cloudflare Blog
2018/06/05 ... Our .onion-based resolver service is a Tor onion service which forwards all communication on DNS ports to the corresponding ports on 1.1.1.1.
https://blog.cloudflare.com/welcome-hidden-resolver/Secondary DNS — A faster, more resilient way to serve your DNS ...
2020/05/25 ... Starting today, enterprise customers who are entitled to secondary DNS will be able to configure their zone in the Cloudflare Dashboard.
https://blog.cloudflare.com/secondary-dns-a-faster-more-resilient-way-to-serve-your-dns-reco...