I think you mean some free domain names with CName and DNS? Some services are not bad. You can use them for some smaller and easy seo sites. I do this it works well.
But you have to know 2 things. You NEVER be the owner of the domains. See it as a lease and another: nothing is forever. Some are very fast gone. Never open big projects, only small sites
and another: nothing is forever. Some are very fast gone. Never open big projects, only small sites
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