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CIRA Canadian Shield vs OpenDNS Home: catalog facts
CIRA Canadian Shield	OpenDNS Home
Free Free, provided by a national not-for-profit.	Free The home DNS service is free to use.
Windows, macOS, Android, iOS, Browser extension	Windows, macOS, Linux, Android, iOS
Blocks phishing, malware, botnets and scam sites Optional adult content filtering for families	Network-wide filtering set once at the router Content filtering suited to parental controls
Built primarily for Canadian users No custom blocklists or per-domain control described	Queries go to a US company's resolver Website mostly promotes Cisco's enterprise products
Downloadable app, Hosted service, Browser extension	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
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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