One input Security checks Clear output

System check

Run a fast, structured health check across DNS, SSL, security headers, email DNS, and uptime. Designed to help you spot the root cause quickly and decide what to fix first.

DNS
A/AAAA, CNAME, MX + propagation hints
SSL
Expiry, chain, and basics you can trust
Headers
Security headers + practical recommendations

Run a check

Enter a domain (or host) and select the checks you want to run.

Tip: use the root domain for email DNS (SPF/DKIM/DMARC).
Results below show an example run to demonstrate the layout. This tool will be wired up next.

Results

A structured view you can copy into tickets and share with stakeholders.

Overall score
Good baseline with a few easy improvements.
SSL OK HSTS missing SPF present

DNS

Healthy
A93.184.216.34
AAAA2606:2800:220:1:248:1893:25c8:1946
MX10 mail.example.com

SSL

Valid
IssuerLet’s Encrypt
Expires2026-10-18
ChainComplete

Headers

Improve
  • Content-Security-Policy present
  • Strict-Transport-Security missing
  • X-Content-Type-Options present

Recommendations

Small changes that improve safety and reliability quickly.

Enable HSTS
Add Strict-Transport-Security with an initial low max-age, then increase once verified.
Tighten DMARC policy
Start at p=none for reporting, then move toward quarantine once aligned.
Add monitoring
Track SSL expiry, uptime and DNS changes so issues are detected early.

FAQ

Quick answers to common questions.

Do I enter a full URL or just a domain?
Use the domain (e.g. example.com). The checks will target common endpoints and records.
What does “headers” mean?
HTTP response headers that improve security posture (e.g. HSTS, CSP) and reduce common browser attack paths.
Can I share the results?
Yes — the layout is designed to be copied into tickets and shared with your team.
Tools

Need help fixing what the check finds?

If the results flag DNS, SSL, headers or email configuration issues, we can resolve them properly and keep them stable over time.

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