I cannot add site, show not a registered domain

[user862]

when I add my domain exammaterial.online then message show exammaterial.online is not a registered domain.
how to solve it.

[sdayman]

Community Tip - Fixing Code: 1049 example.com is not a registered domain

Error Try the suggestions in this Community Tip to help you fix Code: 1049. Background A Code: 1049 is returned when trying to add a domain to Cloudflare. When this happens, in your browser you’ll see the message similar to "example.com is not a registered domain (Code: 1049)". The error Code: 1049 means the domain isn’t registered, the domain has no name servers, the domain name servers can’t be resolved, or the domain name servers don’t contain any DNS records and as a result the domain can…