Check SSL
See whether a website’s SSL certificate is valid and trusted, when it expires and how HTTPS works.
More tools
- WHOISSee the registrar, when the domain was registered and expires, its status and name servers.
- DNS lookupSee A, MX, TXT, NS and the other DNS records, and whether SPF and DMARC for email are set up right.
- DNS propagationCompare the domain’s own name servers with Google, Cloudflare, Quad9 and more, and see when a DNS change shows everywhere.