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Cloudflare 1.1.1.1 vs Quad9: catalog facts
Cloudflare 1.1.1.1	Quad9
Free Free to use.	Free The public resolvers are free to use.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS
Backed by Cloudflare's large, fast global network 1.1.1.1 for Families option adds content filtering without extra software	Malicious domain blocking with no configuration and no account Non-profit, Swiss-based, with a published no-client-IP-logging policy
Filtering options are limited compared to dedicated DNS-filtering platforms Using a third-party resolver still means trusting Cloudflare with DNS query data	Blocking is security-focused only; it does not block advertising No per-device customisation on the free public resolvers
Downloadable app	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.