Live resolution is checked against Google Public DNS and Cloudflare DNS to ensure the domain actively points to a server.
We perform a real TLS handshake. Dates are fetched via a public registry. Links provide deep historical and chain data.
Enter a domain below to run a comprehensive check. We will perform a live DNS resolution and a TLS reachability check for the certificate served on port 443 simultaneously.
Live resolution is checked against Google Public DNS and Cloudflare DNS to ensure the domain actively points to a server.
We perform a real TLS handshake. Dates are fetched via a public registry. Links provide deep historical and chain data.