DNS Health
Public DNS resolution and the records needed for the scan to reach your domain.
Free domain tool
Free Domain Health Check
Check the critical systems behind your domain—including DNS, SSL, HTTPS, email authentication, redirects and security configuration—in one scan.
CloudSpex prioritizes the findings and explains what failed, why it matters and what to do next.
What is a domain health check?
Domain health is more than a registration date. DNS, SSL, HTTPS, email authentication and security configuration work together to affect email delivery, availability, trust and security. Small configuration mistakes can have a visible business impact.
What does CloudSpex check?
SSL and TLS
Whether the HTTPS certificate can be reached and assessed for the target hostname.
HTTP and Redirects
Whether the HTTPS endpoint responds safely and redirect targets can be followed.
Email Security
Available SPF, DKIM and DMARC signals used for email authentication.
Subdomain Risk
A limited public check of the root and common www target for an obvious dangling CNAME risk.
Why domain health changes over time
DNS records can change, certificates expire, redirects can be misconfigured, SPF and DMARC policies can drift, hosting or CDN changes can alter HTTPS behavior, and abandoned subdomain records can create new risk.
One-time scan vs continuous monitoring
One-time scan
Shows the public state now and must be run again manually after changes.
Continuous monitoring
Tracks changes over time, produces alerts and retains history for monitored domains.
Frequently asked questions
What is a domain health check?
A domain health check reviews the public systems that support a website and email, including DNS, SSL, HTTPS, email authentication and configuration signals. It is broader than checking a registration date alone.
What does the CloudSpex domain health checker test?
CloudSpex checks DNS health, SSL certificate and HTTPS access, redirect behavior, email authentication signals and a limited subdomain risk signal. The result explains the findings that are available from the scan.
Is this domain health check free?
Yes. The public check is free and returns a minimized health summary with prioritized findings.
Can I check a domain I do not own?
You can run a public check for a domain. CloudSpex reads only public-facing signals and does not change the domain or website.
Does the scan make changes to the website?
No. The scan is read-only. It does not change DNS, website files, email settings or any other configuration.
How often should domain health be checked?
Run a check after important DNS, hosting, certificate or email configuration changes. Continuous monitoring is useful for catching changes between manual checks.
What is the difference between a scan and monitoring?
A scan shows the current public state and must be run again manually. Continuous monitoring tracks changes over time and can produce alerts and history.