Free SSL checker
See whether browsers get valid HTTPS before customers or scanners flag it.
Expired certs, weak TLS settings, and missing HTTPS redirects break trust fast. RedScore checks certificate health and TLS posture on your production hostname in about 60 seconds. Start at /lookup.
Scan your domainFree scan · No signup · Results in ~60 seconds · Opens /lookup
example-corp.com
✓ scan complete · grade D · 4 issues
AI summary
DMARC enforcement is missing, which leaves spoofing open. SPF is too permissive. Several key web security headers are absent.
Why SSL checks matter
Browsers, prospects, and monitoring tools all see TLS issues immediately. RedScore grades certificate and HTTPS posture from the outside so you fix public trust gaps first.
Built for production domains
One scan covers certificates, headers, DNS, email auth, and exposure.
Validity and HTTPS posture on your live hostname.
Scan the domain customers hit, not localhost or staging.
Know which TLS gaps to close before the next launch.
Passive outside-in scan with no signup required.
What you get
RedScore returns certificate category grades, a 0-100 score, and a prioritized summary across your public footprint.
63 / 100
Grade C
example-corp.com
AI summary
Cookie settings are weak and server headers reveal stack details. Email spoofing is plausible with incomplete SPF and DMARC.
What RedScore checks today
This is not a cipher-suite lab audit or internal PKI review. It checks public TLS and certificate signals visible from the internet. Detailed cipher findings unlock for verified domain owners.
After the free scan
Free scans show safe summary grades. Claim the domain to unlock complete certificate findings and monitoring.
FAQ
