Free SSL checker · Instant · No signup
SSL Checker
Check your SSL/TLS certificate in seconds. Domain Doctor reads your live certificate, checks expiry, hostname match and issuer, and flags weak protocols.
VASTROX HOSTING · EMAIL · DNS · SSL
Want VASTROX to fix every issue above — for you?
Don't fix it alone. Our team configures your SPF, DKIM, DMARC, SSL, DNS and security headers correctly, then hosts you on fast NVMe infrastructure so your domain scores an A and stays there.
- Every failing check fixed and verified
- Hosting, business email, DNS & SSL under one roof
- Free migration from your current provider
What this checks
Your SSL/TLS certificate is what turns the padlock on. If it expires, does not match your hostname, or is served without its full chain, browsers show scary warnings and visitors leave.
Domain Doctor connects to your site over TLS, reads the certificate, and reports the days until expiry, whether the hostname matches the certificate’s names, the issuer, and whether outdated protocols like TLS 1.0/1.1 are still offered. We warn well before expiry so you are never caught out.
Common SSL Checker errors
- Certificate expired or expiring within 30 days
- Hostname not covered by the certificate’s CN/SAN
- Incomplete chain (missing intermediate certificate)
- Self-signed or untrusted issuer
- Server still offering TLS 1.0 / 1.1
VASTROX HOSTING & SSL
Never worry about SSL again
On VASTROX hosting your SSL is issued, chained and auto-renewed — no expiries, no browser warnings, ever.
- Free auto-renewing SSL certificates
- Full chain served correctly
- Modern TLS only, weak protocols disabled
Trusted by businesses for hosting, VPS, business email & game servers · Free migration · Real support
Frequently asked questions
How long before expiry should I renew?
Renew at least 15–30 days before expiry. Automated issuance (like Let’s Encrypt) renews around 30 days out so there is always a buffer.
Why does my certificate work in one browser but not another?
Usually a missing intermediate certificate. Some browsers cache the intermediate and appear fine while others fail. Always serve the full chain.