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Cloudflare DDNS vs FreeDNS: catalog facts
Cloudflare DDNS	FreeDNS
Free The open-source tool is available without a license fee.	Freemium Free DNS and subdomain hosting, with premium options available.
Linux, Self-hosted, Command line	Web
Handles IPv6 as well as IPv4 records Tiny container with one configuration file	Large choice of shared domains for subdomains Dynamic updates with a single curl call
Cloudflare-specific; it does not work with other DNS providers Requires an API token with DNS edit permission	Dated, text-heavy web interface Some features reserved for premium users
Self-hosted	Hosted service
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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