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nobody said desec.io yet, it's a non profit from berlin and they give free subdomains under dedyn.io, with a proper API, so you can do the DNS challenge for let's encrypt (there's a caddy plugin for it too). I haven't run a domain there myself so can't say how it is long term, but for a "try some things" domain it looks like the least shady of the free ones I guess.
Afraid.org, used to use that
What are you looking to do? If it's to do with a name server, you can delegate a subdomain and it's children to be managed by another server using a ns record. This is actually how DNS works in general.
Most of those free dns settups use subdomains already. Unless you cant, for a temporary domain name, I recommend just creating an account at a mainstream/reputable dns provider and buying whatever is on sale for a dollar or two per year. Dont plan on renewing because those ones shoot up.
Hopefully the .self tld becomes a thing because it is supposed to be free: https://hccf.onmy.cloud/2026/06/21/reclaiming-our-digital-selves-hccfs-vision-for-a-human-centered-top-level-domain/
I use free.nf for free subdomains and free hosting.
Don’t know how ethical or not ethical they are.
Edit: infinityfree is actually the name, they offer different free subdomains on some set of names they own. free.nf is one of them.
Not sure the use-case but if its temporary: (Otherwise you have to respond monthly saying you are still using it)
Maybe someone can tell me why they are unethical or you shouldn't use them but I believe you can get a free domain usually from noip
Should be noip.com I believe
https://nic.ua/en/domains/prices
ukrainian registrar, gives pp.ua for free for one year, renewable. will ask for cc details. legit
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