DNS
3 NXDOMAIN
Non-Existent Domain. The queried domain name does not exist in the DNS namespace.
Когда вы видите этот код
The domain has no DNS records at all — either it was never registered, has expired, or you have a typo in the hostname.
Как исправить
Double-check the domain spelling. If you own the domain, verify your registrar settings and ensure the nameservers are correctly delegated.