Check DNS
Every DNS record of a domain, and whether its email is set up right.
More tools
- WHOISSee the registrar, when the domain was registered and expires, its status and name servers.
- DNS propagationCompare the domain’s own name servers with Google, Cloudflare, Quad9 and more, and see when a DNS change shows everywhere.
- SSL checkCheck the SSL certificate: validity, issuer, domain match, certificate chain, TLS versions and HTTPS.