Domain & DNS

Shows whether the main domain actually points visitors to a usable public web server.

Warns when the domain is getting close to expiry, so you do not lose the site over a missed renewal.

Checks whether the domain is in good standing or has been put on hold by the registrar or registry.

Checks whether all delegated nameservers agree, so visitors do not get different DNS answers.

Shows whether the domain has enough nameserver redundancy to survive a single DNS failure.

Checks that MX records are present and whether mail delivery has basic redundancy.

Shows whether people on different networks are likely to see the same DNS answer right now.

Checks whether the domain is protected against unauthorised transfer to another registrar.

Shows whether the domain is ready for IPv6 visitors as well as IPv4 ones.

Shows whether the domain has extra protection against forged DNS answers.

Shows whether inbound mail delivery has a modern policy for enforcing TLS.

Shows whether the zone timing settings are sensible for safe DNS updates and recovery.

Shows whether you can receive reports when encrypted email delivery to the domain breaks.

Shows whether DNS changes will spread in a sensible time instead of too slowly or too erratically.

Checks that the domain TXT layer is clean enough for email and verification records to work reliably.

Shows whether random subdomains resolve, which can be intentional but easy to forget about.

Shows whether the server IPs have reverse DNS configured.

Loads the registration data behind the domain, so SiteAlto can check ownership, expiry and registrar-side risks too.

Shows who manages the domain registration, so you know where to fix ownership or renewal issues.