NETWORK TOOLBOX

Domain Health Checker

Analyze DNS, email security, website availability, and SSL certificate health for any domain.

Check Domain Health

Enter a domain name to check its DNS configuration, email authentication, and website security.

Enter a domain without http:// or https://

What Does the Domain Health Checker Test?

DNS Records

Check A, AAAA, MX, NS, TXT, and CAA records to identify DNS configuration issues.

Email Authentication

Review SPF and DMARC policies, and check DKIM records using an optional selector.

SSL Certificate

Check HTTPS certificate validity, expiration date, and certificate issuer.

Website Availability

Check whether the domain responds over HTTP and HTTPS.