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No-IP vs Duck DNS: catalog facts
No-IP	Duck DNS
Freemium Free dynamic DNS hostnames; managed DNS, domains, SSL and Enhanced plans are paid.	Free Free to use; supported by donations through Patreon.
Web	Web
Free hostnames on many shared domains Downloadable update client	No paid tiers Simple, documented update mechanism
Useful extras are in paid plans The site pushes upgrades and promotions	Limited to the service's own subdomains Few features beyond basic dynamic DNS
Downloadable app, Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
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.