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Netcraft Site Report vs Cloudflare Radar URL Scanner: catalog facts
Netcraft Site Report	Cloudflare Radar URL Scanner
Free Free to use under Netcraft's fair use policy.	Free Free to use.
Web	Web
Shows hosting, server and technology details in one report Includes hosting history and certificate details	Reports technologies, security and performance in one scan Nothing to install
Subject to a fair use policy Some features may not work in older browsers	Proprietary hosted service Only checks public URLs one at a time
Web application	Web application
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 23, 2026

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