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DNS4EU vs CIRA Canadian Shield: catalog facts
DNS4EU	CIRA Canadian Shield
Free Free public service for individuals, with separate offerings for institutions and…	Free Free, provided by a national not-for-profit.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Android, iOS, Browser extension
No software or agent to install, only a DNS address to set Resolution runs on EU infrastructure under EU rules	Blocks phishing, malware, botnets and scam sites Optional adult content filtering for families
Filtering is fixed per variant, with no custom block lists for individuals Relies on trusting a third-party resolver with your queries	Built primarily for Canadian users No custom blocklists or per-domain control described
Hosted service	Downloadable app, Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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